Merge branch 'masterEugen'

2018-08-06 20:38:51 +02:00 · 2018-08-06 20:38:51 +02:00 · 9df3b376f0
parent ca5d22fc15 b5d5a4949f
commit 9df3b376f0
2150 changed files with 72710 additions and 8616 deletions
--- a/.gitignore
+++ b/.gitignore
@ -48,3 +48,17 @@ dependency-reduced-pom.xml
 *.so
 *.dylib
 *.dll
+
+xml/src/test/resources/example_dom4j_new.xml
+xml/src/test/resources/example_dom4j_updated.xml
+xml/src/test/resources/example_jaxb_new.xml
+core-java-io/hard_link.txt
+core-java-io/target_link.txt
+core-java/src/main/java/com/baeldung/manifest/MANIFEST.MF
+ethereum/logs/
+jmeter/src/main/resources/*-JMeter.csv
+
+**/node_modules/
+**/dist
+**/tmp
+**/out-tsc
--- a/.gitmodules
+++ b/.gitmodules
@ -1,3 +0,0 @@
-[submodule "testgitrepo"]
-	path = testgitrepo
-	url = /home/prd/Development/projects/idea/tutorials/spring-boot/src/main/resources/testgitrepo/
--- a/.travis.yml
+++ b/.travis.yml
@ -4,7 +4,7 @@ before_install:
  - echo "MAVEN_OPTS='-Xmx2048M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseG1GC -XX:-UseGCOverheadLimit'" > ~/.mavenrc

 install: skip
-script: travis_wait 60 mvn -q install
+script: travis_wait 60 mvn -q install -Pdefault

 sudo: required

--- a/JGit/pom.xml
+++ b/JGit/pom.xml
@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>JGitSnippets</artifactId>
@ -45,7 +46,6 @@
    </dependencies>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <org.eclipse.jgit.version>4.5.0.201609210915-r</org.eclipse.jgit.version>
    </properties>

--- a/JGit/src/main/resources/logback.xml
+++ b/JGit/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/README.md
+++ b/README.md
@ -19,7 +19,7 @@ In additional to Spring, the following technologies are in focus: `core Java`, `

 Building the project
 ====================
-To do the full build, do: `mvn install -Dgib.enabled=false`
+To do the full build, do: `mvn install -Pdefault -Dgib.enabled=false`


 Working with the code in Eclipse
--- a/Twitter4J/pom.xml
+++ b/Twitter4J/pom.xml
@ -1,6 +1,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
+
    <groupId>com.mabsisa</groupId>
    <artifactId>Twitter4J</artifactId>
    <packaging>jar</packaging>
@ -14,17 +15,11 @@
        <version>1.0.0-SNAPSHOT</version>
    </parent>

-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
-    </properties>
-
    <dependencies>
        <dependency>
            <groupId>org.twitter4j</groupId>
            <artifactId>twitter4j-stream</artifactId>
-            <version>4.0.6</version>
+            <version>${twitter4j-stream.version}</version>
        </dependency>
    </dependencies>

@ -49,4 +44,8 @@
        </plugins>
    </build>

+    <properties>
+        <twitter4j-stream.version>4.0.6</twitter4j-stream.version>
+    </properties>
+
 </project>
--- a/Twitter4J/src/main/resources/logback.xml
+++ b/Twitter4J/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/activejdbc/pom.xml
+++ b/activejdbc/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>activejdbc</artifactId>
@ -15,12 +15,6 @@
    </parent>

    <dependencies>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
        <dependency>
            <groupId>org.javalite</groupId>
            <artifactId>activejdbc</artifactId>
@ -133,10 +127,8 @@
    </pluginRepositories>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <activejdbc.version>1.4.13</activejdbc.version>
        <environments>development.test,development</environments>
-        <org.slf4j.version>1.7.9</org.slf4j.version>
        <mysql.connector.version>5.1.34</mysql.connector.version>
    </properties>

--- a/activejdbc/src/main/resources/logback.xml
+++ b/activejdbc/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/akka-streams/pom.xml
+++ b/akka-streams/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>akka-streams</artifactId>
    <name>akka-streams</name>
--- a/akka-streams/src/main/resources/logback.xml
+++ b/akka-streams/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/algorithms/README.md
+++ b/algorithms/README.md
@ -5,7 +5,6 @@
 - [Ant Colony Optimization](http://www.baeldung.com/java-ant-colony-optimization)
 - [Validating Input With Finite Automata in Java](http://www.baeldung.com/java-finite-automata)
 - [Introduction to Jenetics Library](http://www.baeldung.com/jenetics)
- [Check If a Number Is Prime in Java](http://www.baeldung.com/java-prime-numbers)
 - [Example of Hill Climbing Algorithm](http://www.baeldung.com/java-hill-climbing-algorithm)
 - [Monte Carlo Tree Search for Tic-Tac-Toe Game](http://www.baeldung.com/java-monte-carlo-tree-search)
 - [String Search Algorithms for Large Texts](http://www.baeldung.com/java-full-text-search-algorithms)
@ -21,4 +20,7 @@
 - [Create a Sudoku Solver in Java](http://www.baeldung.com/java-sudoku)
 - [Displaying Money Amounts in Words](http://www.baeldung.com/java-money-into-words)
 - [A Collaborative Filtering Recommendation System in Java](http://www.baeldung.com/java-collaborative-filtering-recommendations)
- [Find All Pairs of Numbers in an Array That Add Up to a Given Sum](http://www.baeldung.com/java-algorithm-number-pairs-sum)
+- [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
+- [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
+- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
+- [An Introduction to the Theory of Big-O Notation](http://www.baeldung.com/big-o-notation)
--- a/algorithms/pom.xml
+++ b/algorithms/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>algorithms</artifactId>
@ -79,7 +79,6 @@
    </reporting>

    <properties>
-        <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
        <lombok.version>1.16.12</lombok.version>
        <commons-math3.version>3.6.1</commons-math3.version>
        <tradukisto.version>1.0.1</tradukisto.version>
--- a/algorithms/src/main/java/com/baeldung/algorithms/RunAlgorithm.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/RunAlgorithm.java
@ -6,7 +6,6 @@ import com.baeldung.algorithms.ga.annealing.SimulatedAnnealing;
 import com.baeldung.algorithms.ga.ant_colony.AntColonyOptimization;
 import com.baeldung.algorithms.ga.binary.SimpleGeneticAlgorithm;
 import com.baeldung.algorithms.slope_one.SlopeOne;
-import com.baeldung.algorithms.pairsaddupnumber.FindPairs;

 public class RunAlgorithm {

@ -39,12 +38,6 @@ public class RunAlgorithm {
 		case 5:
 			System.out.println("Please run the DijkstraAlgorithmTest.");
 			break;
-		case 6:
-			final FindPairs findPairs = new FindPairs();
-			final int[] input = {1, 4, 3, 2, 1, 4, 4, 3, 3};
-			final int sum = 6;
-			findPairs.execute(input, sum);
-			break;
 		default:
 			System.out.println("Unknown option");
 			break;
--- a/algorithms/src/main/java/com/baeldung/algorithms/mcts/montecarlo/MonteCarloTreeSearch.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/mcts/montecarlo/MonteCarloTreeSearch.java
@ -10,7 +10,7 @@ public class MonteCarloTreeSearch {

    private static final int WIN_SCORE = 10;
    private int level;
-    private int oponent;
+    private int opponent;

    public MonteCarloTreeSearch() {
        this.level = 3;
@ -32,11 +32,11 @@ public class MonteCarloTreeSearch {
        long start = System.currentTimeMillis();
        long end = start + 60 * getMillisForCurrentLevel();

-        oponent = 3 - playerNo;
+        opponent = 3 - playerNo;
        Tree tree = new Tree();
        Node rootNode = tree.getRoot();
        rootNode.getState().setBoard(board);
-        rootNode.getState().setPlayerNo(oponent);
+        rootNode.getState().setPlayerNo(opponent);

        while (System.currentTimeMillis() < end) {
            // Phase 1 - Selection
@ -93,7 +93,7 @@ public class MonteCarloTreeSearch {
        State tempState = tempNode.getState();
        int boardStatus = tempState.getBoard().checkStatus();

-        if (boardStatus == oponent) {
+        if (boardStatus == opponent) {
            tempNode.getParent().getState().setWinScore(Integer.MIN_VALUE);
            return boardStatus;
        }
--- a/algorithms/src/main/java/com/baeldung/algorithms/prime/PrimeGenerator.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/prime/PrimeGenerator.java
@ -1,59 +0,0 @@
-package com.baeldung.algorithms.prime;
-
-import java.util.Arrays;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.stream.Collectors;
-import java.util.stream.IntStream;
-
-public class PrimeGenerator {
-    public static List<Integer> sieveOfEratosthenes(int n) {
-        final boolean prime[] = new boolean[n + 1];
-        Arrays.fill(prime, true);
-
-        for (int p = 2; p * p <= n; p++) {
-            if (prime[p]) {
-                for (int i = p * 2; i <= n; i += p)
-                    prime[i] = false;
-            }
-        }
-
-        final List<Integer> primes = new LinkedList<>();
-        for (int i = 2; i <= n; i++) {
-            if (prime[i])
-                primes.add(i);
-        }
-        return primes;
-    }
-
-    public static List<Integer> primeNumbersBruteForce(int max) {
-        final List<Integer> primeNumbers = new LinkedList<Integer>();
-        for (int i = 2; i <= max; i++) {
-            if (isPrimeBruteForce(i)) {
-                primeNumbers.add(i);
-            }
-        }
-        return primeNumbers;
-    }
-
-    private static boolean isPrimeBruteForce(int x) {
-        for (int i = 2; i < x; i++) {
-            if (x % i == 0) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    public static List<Integer> primeNumbersTill(int max) {
-        return IntStream.rangeClosed(2, max)
-            .filter(x -> isPrime(x))
-            .boxed()
-            .collect(Collectors.toList());
-    }
-
-    private static boolean isPrime(int x) {
-        return IntStream.rangeClosed(2, (int) (Math.sqrt(x)))
-            .allMatch(n -> x % n != 0);
-    }
-}
--- a/algorithms/src/main/java/com/baeldung/algorithms/romannumerals/RomanArabicConverter.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/romannumerals/RomanArabicConverter.java
@ -0,0 +1,52 @@
+package com.baeldung.algorithms.romannumerals;
+
+import java.util.List;
+
+class RomanArabicConverter {
+
+    public static int romanToArabic(String input) {
+        String romanNumeral = input.toUpperCase();
+        int result = 0;
+        
+        List<RomanNumeral> romanNumerals = RomanNumeral.getReverseSortedValues();
+
+        int i = 0;
+
+        while ((romanNumeral.length() > 0) && (i < romanNumerals.size())) {
+            RomanNumeral symbol = romanNumerals.get(i);
+            if (romanNumeral.startsWith(symbol.name())) {
+                result += symbol.getValue();
+                romanNumeral = romanNumeral.substring(symbol.name().length());
+            } else {
+                i++;
+            }
+        }
+        if (romanNumeral.length() > 0) {
+            throw new IllegalArgumentException(input + " cannot be converted to a Roman Numeral");
+        }
+
+        return result;
+    }
+
+    public static String arabicToRoman(int number) {
+        if ((number <= 0) || (number > 4000)) {
+            throw new IllegalArgumentException(number + " is not in range (0,4000]");
+        }
+
+        List<RomanNumeral> romanNumerals = RomanNumeral.getReverseSortedValues();
+
+        int i = 0;
+        StringBuilder sb = new StringBuilder();
+
+        while (number > 0 && i < romanNumerals.size()) {
+            RomanNumeral currentSymbol = romanNumerals.get(i);
+            if (currentSymbol.getValue() <= number) {
+                sb.append(currentSymbol.name());
+                number -= currentSymbol.getValue();
+            } else {
+                i++;
+            }
+        }
+        return sb.toString();
+    }
+}
--- a/algorithms/src/main/java/com/baeldung/algorithms/romannumerals/RomanNumeral.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/romannumerals/RomanNumeral.java
@ -0,0 +1,26 @@
+package com.baeldung.algorithms.romannumerals;
+
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+enum RomanNumeral {
+    I(1), IV(4), V(5), IX(9), X(10), XL(40), L(50), XC(90), C(100), CD(400), D(500), CM(900), M(1000);
+
+    private int value;
+
+    RomanNumeral(int value) {
+        this.value = value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+    
+    public static List<RomanNumeral> getReverseSortedValues() {
+        return Arrays.stream(values())
+          .sorted(Comparator.comparing((RomanNumeral e) -> e.value).reversed())
+          .collect(Collectors.toList());
+    }
+}
--- a/algorithms/src/main/resources/logback.xml
+++ b/algorithms/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/algorithms/src/test/java/com/baeldung/algorithms/prime/PrimeGeneratorUnitTest.java
+++ b/algorithms/src/test/java/com/baeldung/algorithms/prime/PrimeGeneratorUnitTest.java
@ -1,28 +0,0 @@
-package com.baeldung.algorithms.prime;
-
-import static com.baeldung.algorithms.prime.PrimeGenerator.*;
-
-import java.util.Arrays;
-import java.util.List;
-import org.junit.Test;
-import static org.junit.Assert.*;
-
-public class PrimeGeneratorUnitTest {
-    @Test
-    public void whenBruteForced_returnsSuccessfully() {
-        final List<Integer> primeNumbers = primeNumbersBruteForce(20);
-        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
-    }
-
-    @Test
-    public void whenOptimized_returnsSuccessfully() {
-        final List<Integer> primeNumbers = primeNumbersTill(20);
-        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
-    }
-
-    @Test
-    public void whenSieveOfEratosthenes_returnsSuccessfully() {
-        final List<Integer> primeNumbers = sieveOfEratosthenes(20);
-        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
-    }
-}
--- a/algorithms/src/test/java/com/baeldung/algorithms/romannumerals/RomanArabicConverterUnitTest.java
+++ b/algorithms/src/test/java/com/baeldung/algorithms/romannumerals/RomanArabicConverterUnitTest.java
@ -0,0 +1,29 @@
+package com.baeldung.algorithms.romannumerals;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+
+public class RomanArabicConverterUnitTest {
+
+    @Test
+    public void given2018Roman_WhenConvertingToArabic_ThenReturn2018() {
+
+        String roman2018 = "MMXVIII";
+
+        int result = RomanArabicConverter.romanToArabic(roman2018);
+
+        assertThat(result).isEqualTo(2018);
+    }
+
+    @Test
+    public void given1999Arabic_WhenConvertingToRoman_ThenReturnMCMXCIX() {
+
+        int arabic1999 = 1999;
+
+        String result = RomanArabicConverter.arabicToRoman(arabic1999);
+
+        assertThat(result).isEqualTo("MCMXCIX");
+    }
+
+}
--- a/animal-sniffer-mvn-plugin/pom.xml
+++ b/animal-sniffer-mvn-plugin/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>animal-sniffer-mvn-plugin</artifactId>
@ -14,15 +14,6 @@
        <version>1.0.0-SNAPSHOT</version>
    </parent>

-    <dependencies>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
    <build>
        <plugins>
            <plugin>
--- a/animal-sniffer-mvn-plugin/src/main/resources/logback.xml
+++ b/animal-sniffer-mvn-plugin/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/annotations/annotation-processing/pom.xml
+++ b/annotations/annotation-processing/pom.xml
@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>annotation-processing</artifactId>

--- a/annotations/annotation-processing/src/main/resources/logback.xml
+++ b/annotations/annotation-processing/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/annotations/annotation-user/pom.xml
+++ b/annotations/annotation-user/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>annotation-user</artifactId>

--- a/annotations/annotation-user/src/main/resources/logback.xml
+++ b/annotations/annotation-user/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/annotations/pom.xml
+++ b/annotations/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>annotations</artifactId>
    <packaging>pom</packaging>
--- a/antlr/README.md
+++ b/antlr/README.md
@ -0,0 +1,3 @@
+### Relevant Articles: 
+
+- [Java with ANTLR](http://www.baeldung.com/java-antlr)
--- a/antlr/pom.xml
+++ b/antlr/pom.xml
@ -0,0 +1,58 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>antlr</artifactId>
+    <name>antlr</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.antlr</groupId>
+                <artifactId>antlr4-maven-plugin</artifactId>
+                <version>${antlr.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>antlr4</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+                <version>${mojo.version}</version>
+                <executions>
+                    <execution>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>add-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>${basedir}/target/generated-sources/antlr4</source>
+                            </sources>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4-runtime</artifactId>
+            <version>${antlr.version}</version>
+        </dependency>
+    </dependencies>
+    <properties>
+        <antlr.version>4.7.1</antlr.version>
+        <mojo.version>3.0.0</mojo.version>
+    </properties>
+</project>
--- a/antlr/src/main/antlr4/com/baeldung/antlr/Java8.g4
+++ b/antlr/src/main/antlr4/com/baeldung/antlr/Java8.g4
--- a/antlr/src/main/antlr4/com/baeldung/antlr/Log.g4
+++ b/antlr/src/main/antlr4/com/baeldung/antlr/Log.g4
@ -0,0 +1,16 @@
+grammar Log;
+
+log : entry+;
+entry : timestamp ' ' level ' ' message CRLF;
+timestamp : DATE ' ' TIME;
+level : 'ERROR' | 'INFO' | 'DEBUG';
+message : (TEXT | ' ')+;
+
+fragment DIGIT : [0-9];
+fragment TWODIGIT : DIGIT DIGIT;
+fragment LETTER : [A-Za-z];
+
+DATE : TWODIGIT TWODIGIT '-' LETTER LETTER LETTER '-' TWODIGIT;
+TIME : TWODIGIT ':' TWODIGIT ':' TWODIGIT;
+TEXT : LETTER+;
+CRLF : '\r'? '\n' | '\r';
--- a/antlr/src/main/java/com/baeldung/antlr/java/UppercaseMethodListener.java
+++ b/antlr/src/main/java/com/baeldung/antlr/java/UppercaseMethodListener.java
@ -0,0 +1,28 @@
+package com.baeldung.antlr.java;
+
+import com.baeldung.antlr.Java8BaseListener;
+import com.baeldung.antlr.Java8Parser;
+import org.antlr.v4.runtime.tree.TerminalNode;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class UppercaseMethodListener extends Java8BaseListener {
+
+    private List<String> errors = new ArrayList<String>();
+
+    @Override
+    public void enterMethodDeclarator(Java8Parser.MethodDeclaratorContext ctx) {
+        TerminalNode node = ctx.Identifier();
+        String methodName = node.getText();
+
+        if (Character.isUpperCase(methodName.charAt(0))){
+            errors.add(String.format("Method %s is uppercased!", methodName));
+        }
+    }
+
+    public List<String> getErrors(){
+        return Collections.unmodifiableList(errors);
+    }
+}
--- a/antlr/src/main/java/com/baeldung/antlr/log/LogListener.java
+++ b/antlr/src/main/java/com/baeldung/antlr/log/LogListener.java
@ -0,0 +1,51 @@
+package com.baeldung.antlr.log;
+
+import com.baeldung.antlr.LogBaseListener;
+import com.baeldung.antlr.LogParser;
+import com.baeldung.antlr.log.model.LogLevel;
+import com.baeldung.antlr.log.model.LogEntry;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+
+public class LogListener extends LogBaseListener {
+
+    private static final DateTimeFormatter DEFAULT_DATETIME_FORMATTER
+            = DateTimeFormatter.ofPattern("yyyy-MMM-dd HH:mm:ss", Locale.ENGLISH);
+
+    private List<LogEntry> entries = new ArrayList<>();
+    private LogEntry currentLogEntry;
+
+    @Override
+    public void enterEntry(LogParser.EntryContext ctx) {
+        this.currentLogEntry = new LogEntry();
+    }
+
+    @Override
+    public void exitEntry(LogParser.EntryContext ctx) {
+        entries.add(currentLogEntry);
+    }
+
+    @Override
+    public void enterTimestamp(LogParser.TimestampContext ctx) {
+        currentLogEntry.setTimestamp(LocalDateTime.parse(ctx.getText(), DEFAULT_DATETIME_FORMATTER));
+    }
+
+    @Override
+    public void enterMessage(LogParser.MessageContext ctx) {
+        currentLogEntry.setMessage(ctx.getText());
+    }
+
+    @Override
+    public void enterLevel(LogParser.LevelContext ctx) {
+        currentLogEntry.setLevel(LogLevel.valueOf(ctx.getText()));
+    }
+
+    public List<LogEntry> getEntries() {
+        return Collections.unmodifiableList(entries);
+    }
+}
--- a/antlr/src/main/java/com/baeldung/antlr/log/model/LogEntry.java
+++ b/antlr/src/main/java/com/baeldung/antlr/log/model/LogEntry.java
@ -0,0 +1,35 @@
+package com.baeldung.antlr.log.model;
+
+
+import java.time.LocalDateTime;
+
+public class LogEntry {
+
+    private LogLevel level;
+    private String message;
+    private LocalDateTime timestamp;
+
+    public LogLevel getLevel() {
+        return level;
+    }
+
+    public void setLevel(LogLevel level) {
+        this.level = level;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public LocalDateTime getTimestamp() {
+        return timestamp;
+    }
+
+    public void setTimestamp(LocalDateTime timestamp) {
+        this.timestamp = timestamp;
+    }
+}
--- a/antlr/src/main/java/com/baeldung/antlr/log/model/LogLevel.java
+++ b/antlr/src/main/java/com/baeldung/antlr/log/model/LogLevel.java
@ -0,0 +1,5 @@
+package com.baeldung.antlr.log.model;
+
+public enum LogLevel {
+    DEBUG, INFO, ERROR
+}
--- a/antlr/src/main/resources/logback.xml
+++ b/antlr/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/antlr/src/test/java/com/baeldung/antlr/JavaParserUnitTest.java
+++ b/antlr/src/test/java/com/baeldung/antlr/JavaParserUnitTest.java
@ -0,0 +1,30 @@
+package com.baeldung.antlr;
+
+import com.baeldung.antlr.java.UppercaseMethodListener;
+import org.antlr.v4.runtime.CharStreams;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.tree.ParseTree;
+import org.antlr.v4.runtime.tree.ParseTreeWalker;
+import org.junit.Test;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+public class JavaParserUnitTest {
+
+    @Test
+    public void whenOneMethodStartsWithUpperCase_thenOneErrorReturned() throws Exception{
+
+        String javaClassContent = "public class SampleClass { void DoSomething(){} }";
+        Java8Lexer java8Lexer = new Java8Lexer(CharStreams.fromString(javaClassContent));
+        CommonTokenStream tokens = new CommonTokenStream(java8Lexer);
+        Java8Parser java8Parser = new Java8Parser(tokens);
+        ParseTree tree = java8Parser.compilationUnit();
+        ParseTreeWalker walker = new ParseTreeWalker();
+        UppercaseMethodListener uppercaseMethodListener = new UppercaseMethodListener();
+        walker.walk(uppercaseMethodListener, tree);
+
+        assertThat(uppercaseMethodListener.getErrors().size(), is(1));
+        assertThat(uppercaseMethodListener.getErrors().get(0),
+                is("Method DoSomething is uppercased!"));
+    }
+}
--- a/antlr/src/test/java/com/baeldung/antlr/LogParserUnitTest.java
+++ b/antlr/src/test/java/com/baeldung/antlr/LogParserUnitTest.java
@ -0,0 +1,36 @@
+package com.baeldung.antlr;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import com.baeldung.antlr.log.LogListener;
+import com.baeldung.antlr.log.model.LogLevel;
+import com.baeldung.antlr.log.model.LogEntry;
+import org.antlr.v4.runtime.CharStreams;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.tree.ParseTreeWalker;
+import org.junit.Test;
+
+import java.time.LocalDateTime;
+
+
+public class LogParserUnitTest {
+
+    @Test
+    public void whenLogContainsOneErrorLogEntry_thenOneErrorIsReturned() throws Exception {
+        String logLines = "2018-May-05 14:20:21 DEBUG entering awesome method\r\n" +
+                "2018-May-05 14:20:24 ERROR Bad thing happened\r\n";
+        LogLexer serverLogLexer = new LogLexer(CharStreams.fromString(logLines));
+        CommonTokenStream tokens = new CommonTokenStream( serverLogLexer );
+        LogParser logParser = new LogParser(tokens);
+        ParseTreeWalker walker = new ParseTreeWalker();
+        LogListener logWalker = new LogListener();
+        walker.walk(logWalker, logParser.log());
+
+        assertThat(logWalker.getEntries().size(), is(2));
+        LogEntry error = logWalker.getEntries().get(1);
+        assertThat(error.getLevel(), is(LogLevel.ERROR));
+        assertThat(error.getMessage(), is("Bad thing happened"));
+        assertThat(error.getTimestamp(), is(LocalDateTime.of(2018,5,5,14,20,24)));
+    }
+}
--- a/apache-avro/README.md
+++ b/apache-avro/README.md
@ -0,0 +1,2 @@
+### Relevant Articles:
+- [Guide to Apache Avro](http://www.baeldung.com/java-apache-avro)
--- a/apache-avro/pom.xml
+++ b/apache-avro/pom.xml
@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>apache-avro-tutorial</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <compiler-plugin.version>3.5</compiler-plugin.version>
+        <avro.version>1.8.2</avro.version>
+        <java.version>1.8</java.version>
+        <slf4j.version>1.7.25</slf4j.version>
+    </properties>
+	
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.10</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>${slf4j.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro-compiler</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro-maven-plugin</artifactId>
+            <version>${avro.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${compiler-plugin.version}</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.avro</groupId>
+                <artifactId>avro-maven-plugin</artifactId>
+                <version>${avro.version}</version>
+                <executions>
+                    <execution>
+                        <id>schemas</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>schema</goal>
+                            <goal>protocol</goal>
+                            <goal>idl-protocol</goal>
+                        </goals>
+                        <configuration>
+                            <sourceDirectory>${project.basedir}/src/main/resources/</sourceDirectory>
+                            <outputDirectory>${project.basedir}/src/main/java/</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
--- a/apache-avro/src/main/java/com/baeldung/avro/util/AvroClassGenerator.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/AvroClassGenerator.java
@ -0,0 +1,14 @@
+package com.baeldung.avro.util;
+
+import org.apache.avro.Schema;
+import org.apache.avro.compiler.specific.SpecificCompiler;
+
+import java.io.File;
+import java.io.IOException;
+
+public class AvroClassGenerator {
+    public void generateAvroClasses() throws IOException {
+        SpecificCompiler compiler = new SpecificCompiler(new Schema.Parser().parse(new File("src/main/resources/avroHttpRequest-schema.avsc")));
+        compiler.compileToDestination(new File("src/main/resources"), new File("src/main/java")); 
+    }
+}
--- a/apache-avro/src/main/java/com/baeldung/avro/util/AvroSchemaBuilder.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/AvroSchemaBuilder.java
@ -0,0 +1,24 @@
+package com.baeldung.avro.util;
+
+
+import org.apache.avro.Schema;
+import org.apache.avro.SchemaBuilder;
+
+public class AvroSchemaBuilder {
+
+    public Schema createAvroHttpRequestSchema(){
+
+        Schema clientIdentifier = SchemaBuilder.record("ClientIdentifier").namespace("com.baeldung.avro.model")
+                .fields().requiredString("hostName").requiredString("ipAddress").endRecord();
+
+        Schema avroHttpRequest = SchemaBuilder.record("AvroHttpRequest").namespace("com.baeldung.avro.model").fields()
+                .requiredLong("requestTime")
+                .name("clientIdentifier").type(clientIdentifier).noDefault()
+                .name("employeeNames").type().array().items().stringType().arrayDefault(null)
+                .name("active").type().enumeration("Active").symbols("YES", "NO").noDefault()
+                .endRecord();
+        return avroHttpRequest;
+    }
+}
+
+
--- a/apache-avro/src/main/java/com/baeldung/avro/util/model/Active.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/model/Active.java
@ -0,0 +1,13 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public enum Active {
+  YES, NO  ;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"enum\",\"name\":\"Active\",\"namespace\":\"com.baeldung.avro.model\",\"symbols\":[\"YES\",\"NO\"]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+}
--- a/apache-avro/src/main/java/com/baeldung/avro/util/model/AvroHttpRequest.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/model/AvroHttpRequest.java
@ -0,0 +1,491 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+
+import org.apache.avro.specific.SpecificData;
+import org.apache.avro.message.BinaryMessageEncoder;
+import org.apache.avro.message.BinaryMessageDecoder;
+import org.apache.avro.message.SchemaStore;
+
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public class AvroHttpRequest extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
+  private static final long serialVersionUID = -8649010116827875312L;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"AvroHttpRequest\",\"namespace\":\"com.baeldung.avro.model\",\"fields\":[{\"name\":\"requestTime\",\"type\":\"long\"},{\"name\":\"clientIdentifier\",\"type\":{\"type\":\"record\",\"name\":\"ClientIdentifier\",\"fields\":[{\"name\":\"hostName\",\"type\":\"string\"},{\"name\":\"ipAddress\",\"type\":\"string\"}]}},{\"name\":\"employeeNames\",\"type\":{\"type\":\"array\",\"items\":\"string\"},\"default\":null},{\"name\":\"active\",\"type\":{\"type\":\"enum\",\"name\":\"Active\",\"symbols\":[\"YES\",\"NO\"]}}]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+
+  private static SpecificData MODEL$ = new SpecificData();
+
+  private static final BinaryMessageEncoder<AvroHttpRequest> ENCODER =
+      new BinaryMessageEncoder<AvroHttpRequest>(MODEL$, SCHEMA$);
+
+  private static final BinaryMessageDecoder<AvroHttpRequest> DECODER =
+      new BinaryMessageDecoder<AvroHttpRequest>(MODEL$, SCHEMA$);
+
+  /**
+   * Return the BinaryMessageDecoder instance used by this class.
+   */
+  public static BinaryMessageDecoder<AvroHttpRequest> getDecoder() {
+    return DECODER;
+  }
+
+  /**
+   * Create a new BinaryMessageDecoder instance for this class that uses the specified {@link SchemaStore}.
+   * @param resolver a {@link SchemaStore} used to find schemas by fingerprint
+   */
+  public static BinaryMessageDecoder<AvroHttpRequest> createDecoder(SchemaStore resolver) {
+    return new BinaryMessageDecoder<AvroHttpRequest>(MODEL$, SCHEMA$, resolver);
+  }
+
+  /** Serializes this AvroHttpRequest to a ByteBuffer. */
+  public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
+    return ENCODER.encode(this);
+  }
+
+  /** Deserializes a AvroHttpRequest from a ByteBuffer. */
+  public static AvroHttpRequest fromByteBuffer(
+      java.nio.ByteBuffer b) throws java.io.IOException {
+    return DECODER.decode(b);
+  }
+
+  @Deprecated public long requestTime;
+  @Deprecated public ClientIdentifier clientIdentifier;
+  @Deprecated public java.util.List<java.lang.CharSequence> employeeNames;
+  @Deprecated public Active active;
+
+  /**
+   * Default constructor.  Note that this does not initialize fields
+   * to their default values from the schema.  If that is desired then
+   * one should use <code>newBuilder()</code>.
+   */
+  public AvroHttpRequest() {}
+
+  /**
+   * All-args constructor.
+   * @param requestTime The new value for requestTime
+   * @param clientIdentifier The new value for clientIdentifier
+   * @param employeeNames The new value for employeeNames
+   * @param active The new value for active
+   */
+  public AvroHttpRequest(java.lang.Long requestTime, ClientIdentifier clientIdentifier, java.util.List<java.lang.CharSequence> employeeNames, Active active) {
+    this.requestTime = requestTime;
+    this.clientIdentifier = clientIdentifier;
+    this.employeeNames = employeeNames;
+    this.active = active;
+  }
+
+  public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+  // Used by DatumWriter.  Applications should not call.
+  public java.lang.Object get(int field$) {
+    switch (field$) {
+    case 0: return requestTime;
+    case 1: return clientIdentifier;
+    case 2: return employeeNames;
+    case 3: return active;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  // Used by DatumReader.  Applications should not call.
+  @SuppressWarnings(value="unchecked")
+  public void put(int field$, java.lang.Object value$) {
+    switch (field$) {
+    case 0: requestTime = (java.lang.Long)value$; break;
+    case 1: clientIdentifier = (ClientIdentifier)value$; break;
+    case 2: employeeNames = (java.util.List<java.lang.CharSequence>)value$; break;
+    case 3: active = (Active)value$; break;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  /**
+   * Gets the value of the 'requestTime' field.
+   * @return The value of the 'requestTime' field.
+   */
+  public java.lang.Long getRequestTime() {
+    return requestTime;
+  }
+
+  /**
+   * Sets the value of the 'requestTime' field.
+   * @param value the value to set.
+   */
+  public void setRequestTime(java.lang.Long value) {
+    this.requestTime = value;
+  }
+
+  /**
+   * Gets the value of the 'clientIdentifier' field.
+   * @return The value of the 'clientIdentifier' field.
+   */
+  public ClientIdentifier getClientIdentifier() {
+    return clientIdentifier;
+  }
+
+  /**
+   * Sets the value of the 'clientIdentifier' field.
+   * @param value the value to set.
+   */
+  public void setClientIdentifier(ClientIdentifier value) {
+    this.clientIdentifier = value;
+  }
+
+  /**
+   * Gets the value of the 'employeeNames' field.
+   * @return The value of the 'employeeNames' field.
+   */
+  public java.util.List<java.lang.CharSequence> getEmployeeNames() {
+    return employeeNames;
+  }
+
+  /**
+   * Sets the value of the 'employeeNames' field.
+   * @param value the value to set.
+   */
+  public void setEmployeeNames(java.util.List<java.lang.CharSequence> value) {
+    this.employeeNames = value;
+  }
+
+  /**
+   * Gets the value of the 'active' field.
+   * @return The value of the 'active' field.
+   */
+  public Active getActive() {
+    return active;
+  }
+
+  /**
+   * Sets the value of the 'active' field.
+   * @param value the value to set.
+   */
+  public void setActive(Active value) {
+    this.active = value;
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder() {
+    return new AvroHttpRequest.Builder();
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder by copying an existing Builder.
+   * @param other The existing builder to copy.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder(AvroHttpRequest.Builder other) {
+    return new AvroHttpRequest.Builder(other);
+  }
+
+  /**
+   * Creates a new AvroHttpRequest RecordBuilder by copying an existing AvroHttpRequest instance.
+   * @param other The existing instance to copy.
+   * @return A new AvroHttpRequest RecordBuilder
+   */
+  public static AvroHttpRequest.Builder newBuilder(AvroHttpRequest other) {
+    return new AvroHttpRequest.Builder(other);
+  }
+
+  /**
+   * RecordBuilder for AvroHttpRequest instances.
+   */
+  public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<AvroHttpRequest>
+    implements org.apache.avro.data.RecordBuilder<AvroHttpRequest> {
+
+    private long requestTime;
+    private ClientIdentifier clientIdentifier;
+    private ClientIdentifier.Builder clientIdentifierBuilder;
+    private java.util.List<java.lang.CharSequence> employeeNames;
+    private Active active;
+
+    /** Creates a new Builder */
+    private Builder() {
+      super(SCHEMA$);
+    }
+
+    /**
+     * Creates a Builder by copying an existing Builder.
+     * @param other The existing Builder to copy.
+     */
+    private Builder(AvroHttpRequest.Builder other) {
+      super(other);
+      if (isValidValue(fields()[0], other.requestTime)) {
+        this.requestTime = data().deepCopy(fields()[0].schema(), other.requestTime);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.clientIdentifier)) {
+        this.clientIdentifier = data().deepCopy(fields()[1].schema(), other.clientIdentifier);
+        fieldSetFlags()[1] = true;
+      }
+      if (other.hasClientIdentifierBuilder()) {
+        this.clientIdentifierBuilder = ClientIdentifier.newBuilder(other.getClientIdentifierBuilder());
+      }
+      if (isValidValue(fields()[2], other.employeeNames)) {
+        this.employeeNames = data().deepCopy(fields()[2].schema(), other.employeeNames);
+        fieldSetFlags()[2] = true;
+      }
+      if (isValidValue(fields()[3], other.active)) {
+        this.active = data().deepCopy(fields()[3].schema(), other.active);
+        fieldSetFlags()[3] = true;
+      }
+    }
+
+    /**
+     * Creates a Builder by copying an existing AvroHttpRequest instance
+     * @param other The existing instance to copy.
+     */
+    private Builder(AvroHttpRequest other) {
+            super(SCHEMA$);
+      if (isValidValue(fields()[0], other.requestTime)) {
+        this.requestTime = data().deepCopy(fields()[0].schema(), other.requestTime);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.clientIdentifier)) {
+        this.clientIdentifier = data().deepCopy(fields()[1].schema(), other.clientIdentifier);
+        fieldSetFlags()[1] = true;
+      }
+      this.clientIdentifierBuilder = null;
+      if (isValidValue(fields()[2], other.employeeNames)) {
+        this.employeeNames = data().deepCopy(fields()[2].schema(), other.employeeNames);
+        fieldSetFlags()[2] = true;
+      }
+      if (isValidValue(fields()[3], other.active)) {
+        this.active = data().deepCopy(fields()[3].schema(), other.active);
+        fieldSetFlags()[3] = true;
+      }
+    }
+
+    /**
+      * Gets the value of the 'requestTime' field.
+      * @return The value.
+      */
+    public java.lang.Long getRequestTime() {
+      return requestTime;
+    }
+
+    /**
+      * Sets the value of the 'requestTime' field.
+      * @param value The value of 'requestTime'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setRequestTime(long value) {
+      validate(fields()[0], value);
+      this.requestTime = value;
+      fieldSetFlags()[0] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'requestTime' field has been set.
+      * @return True if the 'requestTime' field has been set, false otherwise.
+      */
+    public boolean hasRequestTime() {
+      return fieldSetFlags()[0];
+    }
+
+
+    /**
+      * Clears the value of the 'requestTime' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearRequestTime() {
+      fieldSetFlags()[0] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'clientIdentifier' field.
+      * @return The value.
+      */
+    public ClientIdentifier getClientIdentifier() {
+      return clientIdentifier;
+    }
+
+    /**
+      * Sets the value of the 'clientIdentifier' field.
+      * @param value The value of 'clientIdentifier'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setClientIdentifier(ClientIdentifier value) {
+      validate(fields()[1], value);
+      this.clientIdentifierBuilder = null;
+      this.clientIdentifier = value;
+      fieldSetFlags()[1] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'clientIdentifier' field has been set.
+      * @return True if the 'clientIdentifier' field has been set, false otherwise.
+      */
+    public boolean hasClientIdentifier() {
+      return fieldSetFlags()[1];
+    }
+
+    /**
+     * Gets the Builder instance for the 'clientIdentifier' field and creates one if it doesn't exist yet.
+     * @return This builder.
+     */
+    public ClientIdentifier.Builder getClientIdentifierBuilder() {
+      if (clientIdentifierBuilder == null) {
+        if (hasClientIdentifier()) {
+          setClientIdentifierBuilder(ClientIdentifier.newBuilder(clientIdentifier));
+        } else {
+          setClientIdentifierBuilder(ClientIdentifier.newBuilder());
+        }
+      }
+      return clientIdentifierBuilder;
+    }
+
+    /**
+     * Sets the Builder instance for the 'clientIdentifier' field
+     * @param value The builder instance that must be set.
+     * @return This builder.
+     */
+    public AvroHttpRequest.Builder setClientIdentifierBuilder(ClientIdentifier.Builder value) {
+      clearClientIdentifier();
+      clientIdentifierBuilder = value;
+      return this;
+    }
+
+    /**
+     * Checks whether the 'clientIdentifier' field has an active Builder instance
+     * @return True if the 'clientIdentifier' field has an active Builder instance
+     */
+    public boolean hasClientIdentifierBuilder() {
+      return clientIdentifierBuilder != null;
+    }
+
+    /**
+      * Clears the value of the 'clientIdentifier' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearClientIdentifier() {
+      clientIdentifier = null;
+      clientIdentifierBuilder = null;
+      fieldSetFlags()[1] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'employeeNames' field.
+      * @return The value.
+      */
+    public java.util.List<java.lang.CharSequence> getEmployeeNames() {
+      return employeeNames;
+    }
+
+    /**
+      * Sets the value of the 'employeeNames' field.
+      * @param value The value of 'employeeNames'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setEmployeeNames(java.util.List<java.lang.CharSequence> value) {
+      validate(fields()[2], value);
+      this.employeeNames = value;
+      fieldSetFlags()[2] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'employeeNames' field has been set.
+      * @return True if the 'employeeNames' field has been set, false otherwise.
+      */
+    public boolean hasEmployeeNames() {
+      return fieldSetFlags()[2];
+    }
+
+
+    /**
+      * Clears the value of the 'employeeNames' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearEmployeeNames() {
+      employeeNames = null;
+      fieldSetFlags()[2] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'active' field.
+      * @return The value.
+      */
+    public Active getActive() {
+      return active;
+    }
+
+    /**
+      * Sets the value of the 'active' field.
+      * @param value The value of 'active'.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder setActive(Active value) {
+      validate(fields()[3], value);
+      this.active = value;
+      fieldSetFlags()[3] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'active' field has been set.
+      * @return True if the 'active' field has been set, false otherwise.
+      */
+    public boolean hasActive() {
+      return fieldSetFlags()[3];
+    }
+
+
+    /**
+      * Clears the value of the 'active' field.
+      * @return This builder.
+      */
+    public AvroHttpRequest.Builder clearActive() {
+      active = null;
+      fieldSetFlags()[3] = false;
+      return this;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public AvroHttpRequest build() {
+      try {
+        AvroHttpRequest record = new AvroHttpRequest();
+        record.requestTime = fieldSetFlags()[0] ? this.requestTime : (java.lang.Long) defaultValue(fields()[0]);
+        if (clientIdentifierBuilder != null) {
+          record.clientIdentifier = this.clientIdentifierBuilder.build();
+        } else {
+          record.clientIdentifier = fieldSetFlags()[1] ? this.clientIdentifier : (ClientIdentifier) defaultValue(fields()[1]);
+        }
+        record.employeeNames = fieldSetFlags()[2] ? this.employeeNames : (java.util.List<java.lang.CharSequence>) defaultValue(fields()[2]);
+        record.active = fieldSetFlags()[3] ? this.active : (Active) defaultValue(fields()[3]);
+        return record;
+      } catch (java.lang.Exception e) {
+        throw new org.apache.avro.AvroRuntimeException(e);
+      }
+    }
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumWriter<AvroHttpRequest>
+    WRITER$ = (org.apache.avro.io.DatumWriter<AvroHttpRequest>)MODEL$.createDatumWriter(SCHEMA$);
+
+  @Override public void writeExternal(java.io.ObjectOutput out)
+    throws java.io.IOException {
+    WRITER$.write(this, SpecificData.getEncoder(out));
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumReader<AvroHttpRequest>
+    READER$ = (org.apache.avro.io.DatumReader<AvroHttpRequest>)MODEL$.createDatumReader(SCHEMA$);
+
+  @Override public void readExternal(java.io.ObjectInput in)
+    throws java.io.IOException {
+    READER$.read(this, SpecificData.getDecoder(in));
+  }
+
+}
--- a/apache-avro/src/main/java/com/baeldung/avro/util/model/ClientIdentifier.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/model/ClientIdentifier.java
@ -0,0 +1,308 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.baeldung.avro.util.model;
+
+import org.apache.avro.specific.SpecificData;
+import org.apache.avro.message.BinaryMessageEncoder;
+import org.apache.avro.message.BinaryMessageDecoder;
+import org.apache.avro.message.SchemaStore;
+
+@SuppressWarnings("all")
+@org.apache.avro.specific.AvroGenerated
+public class ClientIdentifier extends org.apache.avro.specific.SpecificRecordBase implements org.apache.avro.specific.SpecificRecord {
+  private static final long serialVersionUID = 8754570983127295424L;
+  public static final org.apache.avro.Schema SCHEMA$ = new org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"ClientIdentifier\",\"namespace\":\"com.baeldung.avro.model\",\"fields\":[{\"name\":\"hostName\",\"type\":\"string\"},{\"name\":\"ipAddress\",\"type\":\"string\"}]}");
+  public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+
+  private static SpecificData MODEL$ = new SpecificData();
+
+  private static final BinaryMessageEncoder<ClientIdentifier> ENCODER =
+      new BinaryMessageEncoder<ClientIdentifier>(MODEL$, SCHEMA$);
+
+  private static final BinaryMessageDecoder<ClientIdentifier> DECODER =
+      new BinaryMessageDecoder<ClientIdentifier>(MODEL$, SCHEMA$);
+
+  /**
+   * Return the BinaryMessageDecoder instance used by this class.
+   */
+  public static BinaryMessageDecoder<ClientIdentifier> getDecoder() {
+    return DECODER;
+  }
+
+  /**
+   * Create a new BinaryMessageDecoder instance for this class that uses the specified {@link SchemaStore}.
+   * @param resolver a {@link SchemaStore} used to find schemas by fingerprint
+   */
+  public static BinaryMessageDecoder<ClientIdentifier> createDecoder(SchemaStore resolver) {
+    return new BinaryMessageDecoder<ClientIdentifier>(MODEL$, SCHEMA$, resolver);
+  }
+
+  /** Serializes this ClientIdentifier to a ByteBuffer. */
+  public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
+    return ENCODER.encode(this);
+  }
+
+  /** Deserializes a ClientIdentifier from a ByteBuffer. */
+  public static ClientIdentifier fromByteBuffer(
+      java.nio.ByteBuffer b) throws java.io.IOException {
+    return DECODER.decode(b);
+  }
+
+  @Deprecated public java.lang.CharSequence hostName;
+  @Deprecated public java.lang.CharSequence ipAddress;
+
+  /**
+   * Default constructor.  Note that this does not initialize fields
+   * to their default values from the schema.  If that is desired then
+   * one should use <code>newBuilder()</code>.
+   */
+  public ClientIdentifier() {}
+
+  /**
+   * All-args constructor.
+   * @param hostName The new value for hostName
+   * @param ipAddress The new value for ipAddress
+   */
+  public ClientIdentifier(java.lang.CharSequence hostName, java.lang.CharSequence ipAddress) {
+    this.hostName = hostName;
+    this.ipAddress = ipAddress;
+  }
+
+  public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+  // Used by DatumWriter.  Applications should not call.
+  public java.lang.Object get(int field$) {
+    switch (field$) {
+    case 0: return hostName;
+    case 1: return ipAddress;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  // Used by DatumReader.  Applications should not call.
+  @SuppressWarnings(value="unchecked")
+  public void put(int field$, java.lang.Object value$) {
+    switch (field$) {
+    case 0: hostName = (java.lang.CharSequence)value$; break;
+    case 1: ipAddress = (java.lang.CharSequence)value$; break;
+    default: throw new org.apache.avro.AvroRuntimeException("Bad index");
+    }
+  }
+
+  /**
+   * Gets the value of the 'hostName' field.
+   * @return The value of the 'hostName' field.
+   */
+  public java.lang.CharSequence getHostName() {
+    return hostName;
+  }
+
+  /**
+   * Sets the value of the 'hostName' field.
+   * @param value the value to set.
+   */
+  public void setHostName(java.lang.CharSequence value) {
+    this.hostName = value;
+  }
+
+  /**
+   * Gets the value of the 'ipAddress' field.
+   * @return The value of the 'ipAddress' field.
+   */
+  public java.lang.CharSequence getIpAddress() {
+    return ipAddress;
+  }
+
+  /**
+   * Sets the value of the 'ipAddress' field.
+   * @param value the value to set.
+   */
+  public void setIpAddress(java.lang.CharSequence value) {
+    this.ipAddress = value;
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder() {
+    return new ClientIdentifier.Builder();
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder by copying an existing Builder.
+   * @param other The existing builder to copy.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder(ClientIdentifier.Builder other) {
+    return new ClientIdentifier.Builder(other);
+  }
+
+  /**
+   * Creates a new ClientIdentifier RecordBuilder by copying an existing ClientIdentifier instance.
+   * @param other The existing instance to copy.
+   * @return A new ClientIdentifier RecordBuilder
+   */
+  public static ClientIdentifier.Builder newBuilder(ClientIdentifier other) {
+    return new ClientIdentifier.Builder(other);
+  }
+
+  /**
+   * RecordBuilder for ClientIdentifier instances.
+   */
+  public static class Builder extends org.apache.avro.specific.SpecificRecordBuilderBase<ClientIdentifier>
+    implements org.apache.avro.data.RecordBuilder<ClientIdentifier> {
+
+    private java.lang.CharSequence hostName;
+    private java.lang.CharSequence ipAddress;
+
+    /** Creates a new Builder */
+    private Builder() {
+      super(SCHEMA$);
+    }
+
+    /**
+     * Creates a Builder by copying an existing Builder.
+     * @param other The existing Builder to copy.
+     */
+    private Builder(ClientIdentifier.Builder other) {
+      super(other);
+      if (isValidValue(fields()[0], other.hostName)) {
+        this.hostName = data().deepCopy(fields()[0].schema(), other.hostName);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.ipAddress)) {
+        this.ipAddress = data().deepCopy(fields()[1].schema(), other.ipAddress);
+        fieldSetFlags()[1] = true;
+      }
+    }
+
+    /**
+     * Creates a Builder by copying an existing ClientIdentifier instance
+     * @param other The existing instance to copy.
+     */
+    private Builder(ClientIdentifier other) {
+            super(SCHEMA$);
+      if (isValidValue(fields()[0], other.hostName)) {
+        this.hostName = data().deepCopy(fields()[0].schema(), other.hostName);
+        fieldSetFlags()[0] = true;
+      }
+      if (isValidValue(fields()[1], other.ipAddress)) {
+        this.ipAddress = data().deepCopy(fields()[1].schema(), other.ipAddress);
+        fieldSetFlags()[1] = true;
+      }
+    }
+
+    /**
+      * Gets the value of the 'hostName' field.
+      * @return The value.
+      */
+    public java.lang.CharSequence getHostName() {
+      return hostName;
+    }
+
+    /**
+      * Sets the value of the 'hostName' field.
+      * @param value The value of 'hostName'.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder setHostName(java.lang.CharSequence value) {
+      validate(fields()[0], value);
+      this.hostName = value;
+      fieldSetFlags()[0] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'hostName' field has been set.
+      * @return True if the 'hostName' field has been set, false otherwise.
+      */
+    public boolean hasHostName() {
+      return fieldSetFlags()[0];
+    }
+
+
+    /**
+      * Clears the value of the 'hostName' field.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder clearHostName() {
+      hostName = null;
+      fieldSetFlags()[0] = false;
+      return this;
+    }
+
+    /**
+      * Gets the value of the 'ipAddress' field.
+      * @return The value.
+      */
+    public java.lang.CharSequence getIpAddress() {
+      return ipAddress;
+    }
+
+    /**
+      * Sets the value of the 'ipAddress' field.
+      * @param value The value of 'ipAddress'.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder setIpAddress(java.lang.CharSequence value) {
+      validate(fields()[1], value);
+      this.ipAddress = value;
+      fieldSetFlags()[1] = true;
+      return this;
+    }
+
+    /**
+      * Checks whether the 'ipAddress' field has been set.
+      * @return True if the 'ipAddress' field has been set, false otherwise.
+      */
+    public boolean hasIpAddress() {
+      return fieldSetFlags()[1];
+    }
+
+
+    /**
+      * Clears the value of the 'ipAddress' field.
+      * @return This builder.
+      */
+    public ClientIdentifier.Builder clearIpAddress() {
+      ipAddress = null;
+      fieldSetFlags()[1] = false;
+      return this;
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public ClientIdentifier build() {
+      try {
+        ClientIdentifier record = new ClientIdentifier();
+        record.hostName = fieldSetFlags()[0] ? this.hostName : (java.lang.CharSequence) defaultValue(fields()[0]);
+        record.ipAddress = fieldSetFlags()[1] ? this.ipAddress : (java.lang.CharSequence) defaultValue(fields()[1]);
+        return record;
+      } catch (java.lang.Exception e) {
+        throw new org.apache.avro.AvroRuntimeException(e);
+      }
+    }
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumWriter<ClientIdentifier>
+    WRITER$ = (org.apache.avro.io.DatumWriter<ClientIdentifier>)MODEL$.createDatumWriter(SCHEMA$);
+
+  @Override public void writeExternal(java.io.ObjectOutput out)
+    throws java.io.IOException {
+    WRITER$.write(this, SpecificData.getEncoder(out));
+  }
+
+  @SuppressWarnings("unchecked")
+  private static final org.apache.avro.io.DatumReader<ClientIdentifier>
+    READER$ = (org.apache.avro.io.DatumReader<ClientIdentifier>)MODEL$.createDatumReader(SCHEMA$);
+
+  @Override public void readExternal(java.io.ObjectInput in)
+    throws java.io.IOException {
+    READER$.read(this, SpecificData.getDecoder(in));
+  }
+
+}
--- a/apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroDeSerealizer.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroDeSerealizer.java
@ -0,0 +1,33 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import org.apache.avro.io.DatumReader;
+import org.apache.avro.io.Decoder;
+import org.apache.avro.io.DecoderFactory;
+import org.apache.avro.specific.SpecificDatumReader;
+
+import java.io.IOException;
+
+public class AvroDeSerealizer {
+
+public AvroHttpRequest deSerealizeAvroHttpRequestJSON(byte[] data){
+    DatumReader<AvroHttpRequest> reader = new SpecificDatumReader<>(AvroHttpRequest.class);
+    Decoder decoder = null;
+    try {
+        decoder = DecoderFactory.get().jsonDecoder(AvroHttpRequest.getClassSchema(), new String(data));
+        return reader.read(null, decoder);
+    } catch (IOException e) {
+        return null;
+    }
+}
+
+public AvroHttpRequest deSerealizeAvroHttpRequestBinary(byte[] data){
+    DatumReader<AvroHttpRequest> employeeReader = new SpecificDatumReader<>(AvroHttpRequest.class);
+    Decoder decoder = DecoderFactory.get().binaryDecoder(data, null);
+    try {
+        return employeeReader.read(null, decoder);
+    } catch (IOException e) {
+        return null;
+    }
+}
+}
--- a/apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroSerealizer.java
+++ b/apache-avro/src/main/java/com/baeldung/avro/util/serealization/AvroSerealizer.java
@ -0,0 +1,44 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import org.apache.avro.io.*;
+import org.apache.avro.specific.SpecificDatumWriter;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+public class AvroSerealizer {
+
+public byte[] serealizeAvroHttpRequestJSON(AvroHttpRequest request){
+    DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
+    byte[] data = new byte[0];
+    ByteArrayOutputStream stream = new ByteArrayOutputStream();
+    Encoder jsonEncoder = null;
+    try {
+        jsonEncoder = EncoderFactory.get().jsonEncoder(AvroHttpRequest.getClassSchema(), stream);
+        writer.write(request, jsonEncoder);
+        jsonEncoder.flush();
+        data = stream.toByteArray();
+    } catch (IOException e) {
+        data =null;
+    }
+    return data;
+}
+
+public byte[] serealizeAvroHttpRequestBinary(AvroHttpRequest request){
+    DatumWriter<AvroHttpRequest> writer = new SpecificDatumWriter<>(AvroHttpRequest.class);
+    byte[] data = new byte[0];
+    ByteArrayOutputStream stream = new ByteArrayOutputStream();
+    Encoder jsonEncoder = EncoderFactory.get().binaryEncoder(stream,null);
+    try {
+        writer.write(request, jsonEncoder);
+        jsonEncoder.flush();
+        data = stream.toByteArray();
+    } catch (IOException e) {
+        data = null;
+    }
+
+    return data;
+}
+
+}
--- a/apache-avro/src/main/resources/avroHttpRequest-schema.avsc
+++ b/apache-avro/src/main/resources/avroHttpRequest-schema.avsc
@ -0,0 +1,47 @@
+{
+  "type":"record",
+  "name":"AvroHttpRequest",
+  "namespace":"com.baeldung.avro.model",
+  "fields":[
+    {
+      "name":"requestTime",
+      "type":"long"
+    },
+    {
+      "name":"clientIdentifier",
+      "type":{
+        "type":"record",
+        "name":"ClientIdentifier",
+        "fields":[
+          {
+            "name":"hostName",
+            "type":"string"
+          },
+          {
+            "name":"ipAddress",
+            "type":"string"
+          }
+        ]
+      }
+    },
+    {
+      "name":"employeeNames",
+      "type":{
+        "type":"array",
+        "items":"string"
+      },
+      "default":null
+    },
+    {
+      "name":"active",
+      "type":{
+        "type":"enum",
+        "name":"Active",
+        "symbols":[
+          "YES",
+          "NO"
+        ]
+      }
+    }
+  ]
+}
--- a/apache-avro/src/main/resources/logback.xml
+++ b/apache-avro/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-avro/src/test/java/com/baeldung/avro/util/serealization/AvroSerealizerDeSerealizerTest.java
+++ b/apache-avro/src/test/java/com/baeldung/avro/util/serealization/AvroSerealizerDeSerealizerTest.java
@ -0,0 +1,75 @@
+package com.baeldung.avro.util.serealization;
+
+import com.baeldung.avro.util.model.Active;
+import com.baeldung.avro.util.model.AvroHttpRequest;
+import com.baeldung.avro.util.model.ClientIdentifier;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import static org.junit.Assert.*;
+
+public class AvroSerealizerDeSerealizerTest {
+
+    AvroSerealizer serealizer;
+    AvroDeSerealizer deSerealizer;
+    AvroHttpRequest request;
+
+    @Before
+    public void setUp() throws Exception {
+        serealizer = new AvroSerealizer();
+        deSerealizer = new AvroDeSerealizer();
+
+        ClientIdentifier clientIdentifier = ClientIdentifier.newBuilder().
+                setHostName("localhost").setIpAddress("255.255.255.0").build();
+
+        List<CharSequence> employees = new ArrayList();
+        employees.add("James");
+        employees.add("Alice");
+        employees.add("David");
+        employees.add("Han");
+
+        request = AvroHttpRequest.newBuilder().setRequestTime(01l)
+                .setActive(Active.YES).setClientIdentifier(clientIdentifier)
+                .setEmployeeNames(employees).build();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+    }
+
+@Test
+public void WhenSerialized_UsingJSONEncoder_ObjectGetsSerialized(){
+    byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
+    assertTrue(Objects.nonNull(data));
+    assertTrue(data.length > 0);
+}
+
+@Test
+public void WhenSerialized_UsingBinaryEncoder_ObjectGetsSerialized(){
+    byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
+    assertTrue(Objects.nonNull(data));
+    assertTrue(data.length > 0);
+}
+
+@Test
+public void WhenDeserialize_UsingJSONDecoder_ActualAndExpectedObjectsAreEqual(){
+    byte[] data = serealizer.serealizeAvroHttpRequestJSON(request);
+    AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestJSON(data);
+    assertEquals(actualRequest,request);
+    assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
+}
+
+@Test
+public void WhenDeserialize_UsingBinaryecoder_ActualAndExpectedObjectsAreEqual(){
+    byte[] data = serealizer.serealizeAvroHttpRequestBinary(request);
+    AvroHttpRequest actualRequest = deSerealizer.deSerealizeAvroHttpRequestBinary(data);
+    assertEquals(actualRequest,request);
+    assertTrue(actualRequest.getRequestTime().equals(request.getRequestTime()));
+}
+}
+
--- a/apache-bval/pom.xml
+++ b/apache-bval/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>apache-bval</groupId>
    <artifactId>apache-bval</artifactId>
--- a/apache-bval/src/main/resources/logback.xml
+++ b/apache-bval/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cayenne/pom.xml
+++ b/apache-cayenne/pom.xml
@ -28,12 +28,6 @@
            <scope>runtime</scope>
        </dependency>

-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
    </dependencies>

    <build>
@ -47,12 +41,8 @@
    </build>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
        <mysql.connector.version>5.1.44</mysql.connector.version>
        <cayenne.version>4.0.M5</cayenne.version>
-        <junit.version>4.12</junit.version>
    </properties>

 </project>
--- a/apache-cayenne/src/main/resources/logback.xml
+++ b/apache-cayenne/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-curator/pom.xml
+++ b/apache-curator/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>apache-curator</artifactId>
    <version>0.0.1-SNAPSHOT</version>
--- a/apache-curator/src/main/resources/logback.xml
+++ b/apache-curator/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cxf/cxf-aegis/pom.xml
+++ b/apache-cxf/cxf-aegis/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cxf-aegis</artifactId>

@ -17,8 +17,4 @@
        </dependency>
    </dependencies>

-    <properties>
-        <cxf.version>3.1.8</cxf.version>
-    </properties>
-
 </project>
--- a/apache-cxf/cxf-aegis/src/main/resources/logback.xml
+++ b/apache-cxf/cxf-aegis/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cxf/cxf-introduction/pom.xml
+++ b/apache-cxf/cxf-introduction/pom.xml
@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cxf-introduction</artifactId>

@ -36,9 +36,4 @@
        </plugins>
    </build>

-    <properties>
-        <cxf.version>3.1.8</cxf.version>
-        <surefire.version>2.19.1</surefire.version>
-    </properties>
-
 </project>
--- a/apache-cxf/cxf-introduction/src/main/resources/logback.xml
+++ b/apache-cxf/cxf-introduction/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cxf/cxf-jaxrs-implementation/pom.xml
+++ b/apache-cxf/cxf-jaxrs-implementation/pom.xml
@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cxf-jaxrs-implementation</artifactId>

@ -48,10 +48,7 @@
    </build>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <cxf.version>3.1.8</cxf.version>
        <httpclient.version>4.5.2</httpclient.version>
-        <surefire.version>2.19.1</surefire.version>
    </properties>

 </project>
--- a/apache-cxf/cxf-jaxrs-implementation/src/main/resources/logback.xml
+++ b/apache-cxf/cxf-jaxrs-implementation/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cxf/cxf-spring/pom.xml
+++ b/apache-cxf/cxf-spring/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>cxf-spring</artifactId>
    <packaging>war</packaging>
@ -101,11 +101,7 @@
    </profiles>

    <properties>
-        <cxf.version>3.1.8</cxf.version>
        <spring.version>4.3.4.RELEASE</spring.version>
-        <javax.servlet-api.version>3.1.0</javax.servlet-api.version>
-        <maven-war-plugin.version>2.6</maven-war-plugin.version>
-        <surefire.version>2.19.1</surefire.version>
        <cargo-maven2-plugin.version>1.6.1</cargo-maven2-plugin.version>
    </properties>

--- a/apache-cxf/cxf-spring/src/main/resources/logback.xml
+++ b/apache-cxf/cxf-spring/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-cxf/pom.xml
+++ b/apache-cxf/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-cxf</artifactId>
@ -33,7 +33,7 @@
    </build>

    <properties>
-        <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
+        <cxf.version>3.1.8</cxf.version>
    </properties>

 </project>
--- a/apache-fop/pom.xml
+++ b/apache-fop/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-fop</artifactId>
--- a/apache-meecrowave/README.md
+++ b/apache-meecrowave/README.md
@ -0,0 +1,3 @@
+### Relevant Articles: 
+================================
+- [Building a Microservice with Apache Meecrowave](http://www.baeldung.com/apache-meecrowave)
--- a/apache-meecrowave/pom.xml
+++ b/apache-meecrowave/pom.xml
@ -0,0 +1,57 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>apache-meecrowave</artifactId>
+    <version>0.0.1</version>
+    <name>apache-meecrowave</name>
+    <description>A sample REST API application with Meecrowave</description>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.apache.meecrowave/meecrowave-core -->
+        <dependency>
+            <groupId>org.apache.meecrowave</groupId>
+            <artifactId>meecrowave-core</artifactId>
+            <version>1.2.1</version>
+        </dependency>
+        <!-- https://mvnrepository.com/artifact/org.apache.meecrowave/meecrowave-jpa -->
+        <dependency>
+            <groupId>org.apache.meecrowave</groupId>
+            <artifactId>meecrowave-jpa</artifactId>
+            <version>1.2.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>3.10.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.meecrowave</groupId>
+            <artifactId>meecrowave-junit</artifactId>
+            <version>1.2.0</version>
+            <scope>test</scope>
+        </dependency>
+        <!-- https://mvnrepository.com/artifact/junit/junit -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.10</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.meecrowave</groupId>
+                <artifactId>meecrowave-maven-plugin</artifactId>
+                <version>1.2.1</version>
+            </plugin>
+        </plugins>
+    </build>
+</project>
--- a/apache-meecrowave/src/main/java/com/baeldung/meecrowave/Article.java
+++ b/apache-meecrowave/src/main/java/com/baeldung/meecrowave/Article.java
@ -0,0 +1,30 @@
+package com.baeldung.meecrowave;
+
+public class Article {
+    private String name;
+    private String author;
+
+    public Article() {
+    }
+
+    public Article(String name, String author) {
+        this.author = author;
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+}
--- a/apache-meecrowave/src/main/java/com/baeldung/meecrowave/ArticleEndpoints.java
+++ b/apache-meecrowave/src/main/java/com/baeldung/meecrowave/ArticleEndpoints.java
@ -0,0 +1,32 @@
+package com.baeldung.meecrowave;
+
+import javax.enterprise.context.RequestScoped;
+import javax.inject.Inject;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+
+@RequestScoped
+@Path("article")
+public class ArticleEndpoints {
+
+    @Inject
+    ArticleService articleService;
+
+    @GET
+    public Response getArticle() {
+        return Response.ok()
+            .entity(new Article("name", "author"))
+            .build();
+
+    }
+
+    @POST
+    public Response createArticle(Article article) {
+        return Response.status(Status.CREATED)
+            .entity(articleService.createArticle(article))
+            .build();
+    }
+}
--- a/apache-meecrowave/src/main/java/com/baeldung/meecrowave/ArticleService.java
+++ b/apache-meecrowave/src/main/java/com/baeldung/meecrowave/ArticleService.java
@ -0,0 +1,10 @@
+package com.baeldung.meecrowave;
+
+import javax.enterprise.context.ApplicationScoped;
+
+@ApplicationScoped
+public class ArticleService {
+    public Article createArticle(Article article) {
+        return article;
+    }
+}
--- a/apache-meecrowave/src/main/java/com/baeldung/meecrowave/Server.java
+++ b/apache-meecrowave/src/main/java/com/baeldung/meecrowave/Server.java
@ -0,0 +1,16 @@
+package com.baeldung.meecrowave;
+
+import org.apache.meecrowave.Meecrowave;
+
+public class Server {
+    public static void main(String[] args) {
+        final Meecrowave.Builder builder = new Meecrowave.Builder();
+        builder.setScanningPackageIncludes("com.baeldung.meecrowave");
+        builder.setJaxrsMapping("/api/*");
+        builder.setJsonpPrettify(true);
+
+        try (Meecrowave meecrowave = new Meecrowave(builder)) {
+            meecrowave.bake().await();
+        }
+    }
+}
--- a/apache-meecrowave/src/main/resources/logback.xml
+++ b/apache-meecrowave/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-meecrowave/src/test/java/com/baeldung/meecrowave/ArticleEndpointsTest.java
+++ b/apache-meecrowave/src/test/java/com/baeldung/meecrowave/ArticleEndpointsTest.java
@ -0,0 +1,41 @@
+package com.baeldung.meecrowave;
+
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+
+import org.apache.meecrowave.Meecrowave;
+import org.apache.meecrowave.junit.MonoMeecrowave;
+import org.apache.meecrowave.testing.ConfigurationInject;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+
+@RunWith(MonoMeecrowave.Runner.class)
+public class ArticleEndpointsTest {
+    
+    @ConfigurationInject
+    private Meecrowave.Builder config;
+    private static OkHttpClient client;
+    
+    @BeforeClass
+    public static void setup() {
+        client = new OkHttpClient();
+    }
+    
+   @Test
+    public void whenRetunedArticle_thenCorrect() throws IOException {
+        final String base = "http://localhost:"+config.getHttpPort();
+        
+        Request request = new Request.Builder()
+          .url(base+"/article")
+          .build();
+        Response response = client.newCall(request).execute();
+        assertEquals(200,  response.code());
+    }
+}
--- a/apache-opennlp/pom.xml
+++ b/apache-opennlp/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>apache-opennlp</artifactId>
    <version>1.0-SNAPSHOT</version>
@ -24,12 +24,6 @@
            <version>${org.assertj.version}</version>
            <scope>test</scope>
        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
    </dependencies>

    <properties>
--- a/apache-opennlp/src/main/resources/logback.xml
+++ b/apache-opennlp/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-poi/pom.xml
+++ b/apache-poi/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-poi</artifactId>
--- a/apache-poi/src/main/resources/logback.xml
+++ b/apache-poi/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-shiro/pom.xml
+++ b/apache-shiro/pom.xml
@ -8,9 +8,10 @@
    <version>1.0-SNAPSHOT</version>

    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>${org.springframework.boot.spring-boot-starter-parent.version}</version>
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-1</relativePath>
    </parent>

    <dependencies>
@ -57,10 +58,10 @@
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.7.0</version>
+                <version>${maven-compiler-plugin.version}</version>
                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
                </configuration>
            </plugin>
        </plugins>
@ -68,9 +69,10 @@

    <properties>
        <apache-shiro-core-version>1.4.0</apache-shiro-core-version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
+        <java.version>1.8</java.version>
        <log4j-version>1.2.17</log4j-version>
        <slf4j-version>1.7.25</slf4j-version>
-        <org.springframework.boot.spring-boot-starter-parent.version>1.5.2.RELEASE</org.springframework.boot.spring-boot-starter-parent.version>
    </properties>

 </project>
--- a/apache-solrj/pom.xml
+++ b/apache-solrj/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-solrj</artifactId>
--- a/apache-solrj/src/main/resources/logback.xml
+++ b/apache-solrj/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-solrj/src/test/java/com/baeldung/solrjava/SolrJavaIntegrationTest.java
+++ b/apache-solrj/src/test/java/com/baeldung/solrjava/SolrJavaIntegrationTest.java
@ -12,7 +12,7 @@ import org.apache.solr.common.SolrDocumentList;
 import org.junit.Before;
 import org.junit.Test;

-public class SolrJavaIntegrationTest {
+public class SolrJavaLiveTest {

    private SolrJavaIntegration solrJavaIntegration;

--- a/apache-spark/pom.xml
+++ b/apache-spark/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-spark</artifactId>
@ -21,16 +21,9 @@
            <artifactId>spark-core_2.10</artifactId>
            <version>${org.apache.spark.spark-core.version}</version>
        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
    </dependencies>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <org.apache.spark.spark-core.version>2.2.0</org.apache.spark.spark-core.version>
    </properties>

--- a/apache-spark/src/main/resources/logback.xml
+++ b/apache-spark/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-thrift/pom.xml
+++ b/apache-thrift/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-thrift</artifactId>
--- a/apache-thrift/src/main/resources/logback.xml
+++ b/apache-thrift/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-tika/pom.xml
+++ b/apache-tika/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-tika</artifactId>
--- a/apache-tika/src/main/resources/logback.xml
+++ b/apache-tika/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/apache-velocity/pom.xml
+++ b/apache-velocity/pom.xml
@ -60,7 +60,6 @@

    <properties>
        <jstl.version>1.2</jstl.version>
-        <maven-war-plugin.version>2.6</maven-war-plugin.version>
        <org.apache.httpcomponents.version>4.5.2</org.apache.httpcomponents.version>
        <velocity-version>1.7</velocity-version>
        <velocity-tools-version>2.0</velocity-tools-version>
--- a/apache-zookeeper/pom.xml
+++ b/apache-zookeeper/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>apache-zookeeper</artifactId>
--- a/apache-zookeeper/src/main/resources/logback.xml
+++ b/apache-zookeeper/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/asciidoctor/pom.xml
+++ b/asciidoctor/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>asciidoctor</artifactId>
    <name>asciidoctor</name>
--- a/asciidoctor/src/main/resources/logback.xml
+++ b/asciidoctor/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/asm/pom.xml
+++ b/asm/pom.xml
@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung.examples</groupId>
    <artifactId>asm</artifactId>
@ -54,10 +54,8 @@
    </build>

    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <asm.version>5.2</asm.version>
        <maven-jar-plugin.version>2.4</maven-jar-plugin.version>
-        <maven-surefire-plugin.version>2.9</maven-surefire-plugin.version>
    </properties>

 </project>
--- a/asm/src/main/resources/logback.xml
+++ b/asm/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/atomix/pom.xml
+++ b/atomix/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.atomix.io</groupId>
    <artifactId>atomix</artifactId>
@ -17,12 +17,6 @@
            <artifactId>atomix-all</artifactId>
            <version>${atomix-all.version}</version>
        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
@ -32,7 +26,6 @@

    <properties>
        <atomix-all.version>1.0.0-rc9</atomix-all.version>
-        <log4j.version>1.2.17</log4j.version>
    </properties>

 </project>
--- a/atomix/src/main/resources/logback.xml
+++ b/atomix/src/main/resources/logback.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/autovalue/pom.xml
+++ b/autovalue/pom.xml
@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>autovalue</artifactId>
--- a/Show More
+++ b/Show More