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Merge pull request #69 from eugenp/master 

update
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Maiklins 2020-08-29 23:11:23 +02:00 committed by GitHub
parent 7784219a2e 1e167f7fa4
commit 9541b56c5e
578 changed files with 3383 additions and 1263 deletions
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2
algorithms-searching/README.md
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@ -3,6 +3,7 @@
This module contains articles about searching algorithms.
### Relevant articles:
- [Binary Search Algorithm in Java](https://www.baeldung.com/java-binary-search)
- [Depth First Search in Java](https://www.baeldung.com/java-depth-first-search)
- [Interpolation Search in Java](https://www.baeldung.com/java-interpolation-search)
@ -11,3 +12,4 @@ This module contains articles about searching algorithms.
- [Monte Carlo Tree Search for Tic-Tac-Toe Game](https://www.baeldung.com/java-monte-carlo-tree-search)
- [Range Search Algorithm in Java](https://www.baeldung.com/java-range-search)
- [Fast Pattern Matching of Strings Using Suffix Tree](https://www.baeldung.com/java-pattern-matching-suffix-tree)
- [Find the Kth Smallest Element in Two Sorted Arrays](https://www.baeldung.com/java-kth-smallest-element-in-sorted-arrays)

2
apache-poi/README.md
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@ -3,9 +3,11 @@
This module contains articles about Apache POI
### Relevant Articles:
- [Microsoft Word Processing in Java with Apache POI](https://www.baeldung.com/java-microsoft-word-with-apache-poi)
- [Working with Microsoft Excel in Java](https://www.baeldung.com/java-microsoft-excel)
- [Creating a MS PowerPoint Presentation in Java](https://www.baeldung.com/apache-poi-slideshow)
- [Merge Cells in Excel Using Apache POI](https://www.baeldung.com/java-apache-poi-merge-cells)
- [Get String Value of Excel Cell with Apache POI](https://www.baeldung.com/java-apache-poi-cell-string-value)
- [Read Excel Cell Value Rather Than Formula With Apache POI](https://www.baeldung.com/apache-poi-read-cell-value-formula)
- [Setting Formulas in Excel with Apache POI](https://www.baeldung.com/java-apache-poi-set-formulas)

27
cdi/pom.xml
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@ -1,8 +1,8 @@
<?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">
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>
<artifactId>cdi</artifactId>
<version>1.0-SNAPSHOT</version>
@ -10,9 +10,9 @@
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-spring-4</artifactId>
<artifactId>parent-spring-5</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-spring-4</relativePath>
<relativePath>../parent-spring-5</relativePath>
</parent>
<dependencies>
@ -26,28 +26,22 @@
<artifactId>weld-se-core</artifactId>
<version>${weld-se-core.version}</version>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest</artifactId>
<version>${hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
@ -61,7 +55,6 @@
<weld-se-core.version>3.0.5.Final</weld-se-core.version>
<aspectjweaver.version>1.9.2</aspectjweaver.version>
<assertj-core.version>3.10.0</assertj-core.version>
<spring.version>5.1.2.RELEASE</spring.version>
</properties>
</project>

1
core-java-modules/core-java-10/README.md
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@ -9,3 +9,4 @@ This module contains articles about Java 10 core features
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
- [Deep Dive Into the New Java JIT Compiler – Graal](https://www.baeldung.com/graal-java-jit-compiler)
- [Copying Sets in Java](https://www.baeldung.com/java-copy-sets)
- [Converting between a List and a Set in Java](https://www.baeldung.com/convert-list-to-set-and-set-to-list)

24
core-java-modules/core-java-10/pom.xml
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@ -1,22 +1,29 @@
<?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">
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>
<artifactId>core-java-10</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-10</name>
<packaging>jar</packaging>
<url>http://maven.apache.org</url>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../../</relativePath>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
@ -34,6 +41,7 @@
<properties>
<maven.compiler.source.version>10</maven.compiler.source.version>
<maven.compiler.target.version>10</maven.compiler.target.version>
<commons-collections4.version>4.1</commons-collections4.version>
</properties>
</project>

68
core-java-modules/core-java-10/src/test/java/com/baeldung/java10/collections/conversion/ListSetConversionUnitTest.java Normal file
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@ -0,0 +1,68 @@
package com.baeldung.java10.collections.conversion;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import org.apache.commons.collections4.CollectionUtils;
import org.junit.Test;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class ListSetConversionUnitTest {
// Set -> List; List -> Set
@Test
public final void givenUsingCoreJava_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = new ArrayList<>(sourceSet);
}
@Test
public final void givenUsingCoreJava_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = new HashSet<>(sourceList);
}
@Test
public void givenUsingJava10_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = List.copyOf(sourceSet);
}
@Test
public void givenUsingJava10_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = Set.copyOf(sourceList);
}
@Test
public final void givenUsingGuava_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = Lists.newArrayList(sourceSet);
}
@Test
public final void givenUsingGuava_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = Sets.newHashSet(sourceList);
}
@Test
public final void givenUsingCommonsCollections_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = new HashSet<>(6);
CollectionUtils.addAll(targetSet, sourceList);
}
@Test
public final void givenUsingCommonsCollections_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = new ArrayList<>(6);
CollectionUtils.addAll(targetList, sourceSet);
}
}

1
core-java-modules/core-java-10/src/test/java/com/baeldung/java10/list/CopyListServiceUnitTest.java
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@ -10,5 +10,6 @@ public class CopyListServiceUnitTest {
@Test(expected = UnsupportedOperationException.class)
public void whenModifyCopyOfList_thenThrowsException() {
List<Integer> copyList = List.copyOf(Arrays.asList(1, 2, 3, 4));
copyList.add(4);
}
}

2
core-java-modules/core-java-8-datetime/src/test/java/com/baeldung/datetime/UseDateTimeFormatterUnitTest.java
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@ -31,6 +31,6 @@ public class UseDateTimeFormatterUnitTest {
public void givenALocalDate_whenFormattingWithStyleAndLocale_thenPass() {
String result = subject.formatWithStyleAndLocale(localDateTime, FormatStyle.MEDIUM, Locale.UK);
assertThat(result).isEqualTo("25 Jan 2015, 06:30:00");
assertThat(result).isEqualTo("25-Jan-2015 06:30:00");
}
}

6
core-java-modules/core-java-8-datetime/src/test/java/com/baeldung/datetime/UseToInstantUnitTest.java
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@ -3,6 +3,7 @@ package com.baeldung.datetime;
import static org.assertj.core.api.Assertions.assertThat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
@ -24,10 +25,11 @@ public class UseToInstantUnitTest {
@Test
public void givenADate_whenConvertingToLocalDate_thenAsExpected() {
Date givenDate = new Date(1465817690000L);
LocalDateTime currentDateTime = LocalDateTime.now();
Date givenDate = Date.from(currentDateTime.atZone(ZoneId.systemDefault()).toInstant());
LocalDateTime localDateTime = subject.convertDateToLocalDate(givenDate);
assertThat(localDateTime).isEqualTo("2016-06-13T13:34:50");
assertThat(localDateTime).isEqualTo(currentDateTime);
}
}

2
core-java-modules/core-java-8-datetime/src/test/java/com/baeldung/datetime/UseZonedDateTimeUnitTest.java
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@ -54,7 +54,7 @@ public class UseZonedDateTimeUnitTest {
@Test
public void givenAStringWithTimeZone_whenParsing_thenEqualsExpected() {
ZonedDateTime resultFromString = zonedDateTime.getZonedDateTimeUsingParseMethod("2015-05-03T10:15:30+01:00[Europe/Paris]");
ZonedDateTime resultFromLocalDateTime = ZonedDateTime.of(2015, 5, 3, 11, 15, 30, 0, ZoneId.of("Europe/Paris"));
ZonedDateTime resultFromLocalDateTime = ZonedDateTime.of(2015, 5, 3, 10, 15, 30, 0, ZoneId.of("Europe/Paris"));
assertThat(resultFromString.getZone()).isEqualTo(ZoneId.of("Europe/Paris"));
assertThat(resultFromLocalDateTime.getZone()).isEqualTo(ZoneId.of("Europe/Paris"));

2
core-java-modules/core-java-arrays-operations-advanced/README.md
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@ -3,7 +3,9 @@
This module contains articles about advanced operations on arrays in Java. They assume some background knowledge with arrays in Java.
### Relevant Articles:
- [How to Copy an Array in Java](https://www.baeldung.com/java-array-copy)
- [Arrays.deepEquals](https://www.baeldung.com/java-arrays-deepequals)
- [Find Sum and Average in a Java Array](https://www.baeldung.com/java-array-sum-average)
- [Intersection Between two Integer Arrays](https://www.baeldung.com/java-array-intersection)
- [Comparing Arrays in Java](https://www.baeldung.com/java-comparing-arrays)

1
core-java-modules/core-java-collections-3/README.md
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@ -12,3 +12,4 @@
- [Fail-Safe Iterator vs Fail-Fast Iterator](https://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
- [Quick Guide to the Java Stack](https://www.baeldung.com/java-stack)
- [Convert an Array of Primitives to a List](https://www.baeldung.com/java-primitive-array-to-list)
- [A Guide to BitSet in Java](https://www.baeldung.com/java-bitset)

1
core-java-modules/core-java-collections-list-3/README.md
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@ -10,4 +10,5 @@ This module contains articles about the Java List collection
- [Performance Comparison of Primitive Lists in Java](https://www.baeldung.com/java-list-primitive-performance)
- [Filtering a Java Collection by a List](https://www.baeldung.com/java-filter-collection-by-list)
- [How to Count Duplicate Elements in Arraylist](https://www.baeldung.com/java-count-duplicate-elements-arraylist)
- [Finding the Differences Between Two Lists in Java](https://www.baeldung.com/java-lists-difference)
- [[<-- Prev]](/core-java-modules/core-java-collections-list-2)

14
core-java-modules/core-java-collections-maps-2/pom.xml
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@ -21,20 +21,15 @@
<version>${eclipse-collections.version}</version>
</dependency>
<dependency>
<groupId>net.sf.trove4j</groupId>
<artifactId>trove4j</artifactId>
<version>${trove4j.version}</version>
<groupId>com.carrotsearch</groupId>
<artifactId>hppc</artifactId>
<version>${hppc.version}</version>
</dependency>
<dependency>
<groupId>it.unimi.dsi</groupId>
<artifactId>fastutil</artifactId>
<version>${fastutil.version}</version>
</dependency>
<dependency>
<groupId>colt</groupId>
<artifactId>colt</artifactId>
<version>${colt.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
@ -69,9 +64,8 @@
<commons-collections4.version>4.1</commons-collections4.version>
<avaitility.version>1.7.0</avaitility.version>
<eclipse-collections.version>8.2.0</eclipse-collections.version>
<trove4j.version>3.0.2</trove4j.version>
<hppc.version>0.7.2</hppc.version>
<fastutil.version>8.1.0</fastutil.version>
<colt.version>1.2.0</colt.version>
<assertj.version>3.11.1</assertj.version>
</properties>

81
core-java-modules/core-java-collections-maps-2/src/main/java/com/baeldung/map/primitives/PrimitiveMaps.java
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@ -1,29 +1,68 @@
package com.baeldung.map.primitives;
import cern.colt.map.AbstractIntDoubleMap;
import cern.colt.map.OpenIntDoubleHashMap;
import gnu.trove.map.TDoubleIntMap;
import gnu.trove.map.hash.TDoubleIntHashMap;
import com.carrotsearch.hppc.IntLongHashMap;
import com.carrotsearch.hppc.IntLongScatterMap;
import com.carrotsearch.hppc.IntObjectHashMap;
import com.carrotsearch.hppc.IntObjectMap;
import com.carrotsearch.hppc.IntObjectScatterMap;
import it.unimi.dsi.fastutil.ints.Int2BooleanMap;
import it.unimi.dsi.fastutil.ints.Int2BooleanMaps;
import it.unimi.dsi.fastutil.ints.Int2BooleanOpenHashMap;
import it.unimi.dsi.fastutil.ints.Int2BooleanSortedMap;
import it.unimi.dsi.fastutil.ints.Int2BooleanSortedMaps;
import it.unimi.dsi.fastutil.objects.ObjectIterator;
import org.eclipse.collections.api.map.primitive.ImmutableIntIntMap;
import org.eclipse.collections.api.map.primitive.MutableIntIntMap;
import org.eclipse.collections.api.map.primitive.MutableObjectDoubleMap;
import org.eclipse.collections.impl.factory.primitive.IntIntMaps;
import org.eclipse.collections.impl.factory.primitive.ObjectDoubleMaps;
import static java.lang.String.format;
import java.math.BigDecimal;
public class PrimitiveMaps {
public static void main(String[] args) {
hppcMap();
eclipseCollectionsMap();
troveMap();
coltMap();
fastutilMap();
}
private static void hppcMap() {
//Regular maps
IntLongHashMap intLongHashMap = new IntLongHashMap();
intLongHashMap.put(25,1L);
intLongHashMap.put(150,Long.MAX_VALUE);
intLongHashMap.put(1,0L);
intLongHashMap.get(150);
IntObjectMap<BigDecimal> intObjectMap = new IntObjectHashMap<BigDecimal>();
intObjectMap.put(1, BigDecimal.valueOf(1));
intObjectMap.put(2, BigDecimal.valueOf(2500));
BigDecimal value = intObjectMap.get(2);
//Scatter maps
IntLongScatterMap intLongScatterMap = new IntLongScatterMap();
intLongScatterMap.put(1, 1L);
intLongScatterMap.put(2, -2L);
intLongScatterMap.put(1000,0L);
intLongScatterMap.get(1000);
IntObjectScatterMap<BigDecimal> intObjectScatterMap = new IntObjectScatterMap<BigDecimal>();
intObjectScatterMap.put(1, BigDecimal.valueOf(1));
intObjectScatterMap.put(2, BigDecimal.valueOf(2500));
value = intObjectScatterMap.get(2);
}
private static void fastutilMap() {
Int2BooleanMap int2BooleanMap = new Int2BooleanOpenHashMap();
int2BooleanMap.put(1, true);
@ -32,13 +71,19 @@ public class PrimitiveMaps {
boolean value = int2BooleanMap.get(1);
Int2BooleanSortedMap int2BooleanSorted = Int2BooleanSortedMaps.EMPTY_MAP;
}
//Lambda style iteration
Int2BooleanMaps.fastForEach(int2BooleanMap, entry -> {
System.out.println(String.format("Key: %d, Value: %b",entry.getIntKey(),entry.getBooleanValue()));
});
//Iterator based loop
ObjectIterator<Int2BooleanMap.Entry> iterator = Int2BooleanMaps.fastIterator(int2BooleanMap);
while(iterator.hasNext()) {
Int2BooleanMap.Entry entry = iterator.next();
System.out.println(String.format("Key: %d, Value: %b",entry.getIntKey(),entry.getBooleanValue()));
}
private static void coltMap() {
AbstractIntDoubleMap map = new OpenIntDoubleHashMap();
map.put(1, 4.5);
double value = map.get(1);
}
private static void eclipseCollectionsMap() {
@ -53,17 +98,5 @@ public class PrimitiveMaps {
dObject.addToValue("stability", 0.8);
}
private static void troveMap() {
double[] doubles = new double[] {1.2, 4.5, 0.3};
int[] ints = new int[] {1, 4, 0};
TDoubleIntMap doubleIntMap = new TDoubleIntHashMap(doubles, ints);
doubleIntMap.put(1.2, 22);
doubleIntMap.put(4.5, 16);
doubleIntMap.adjustValue(1.2, 1);
doubleIntMap.adjustValue(4.5, 4);
doubleIntMap.adjustValue(0.3, 7);
}
}

9
core-java-modules/core-java-console/README.md
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@ -1,5 +1,8 @@
#Core Java Console
[Read and Write User Input in Java](http://www.baeldung.com/java-console-input-output)
[Formatting with printf() in Java](https://www.baeldung.com/java-printstream-printf)
[ASCII Art in Java](http://www.baeldung.com/ascii-art-in-java)
### Relevant Articles:
- [Read and Write User Input in Java](http://www.baeldung.com/java-console-input-output)
- [Formatting with printf() in Java](https://www.baeldung.com/java-printstream-printf)
- [ASCII Art in Java](http://www.baeldung.com/ascii-art-in-java)
- [System.console() vs. System.out](https://www.baeldung.com/java-system-console-vs-system-out)

3
core-java-modules/core-java-exceptions-3/README.md Normal file
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@ -0,0 +1,3 @@
### Relevant Articles:
- [NoSuchMethodError in Java](https://www.baeldung.com/java-nosuchmethod-error)

33
core-java-modules/core-java-exceptions-3/pom.xml Normal file
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@ -0,0 +1,33 @@
<?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.exceptions</groupId>
<artifactId>core-java-exceptions-3</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-exceptions-3</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<dependencies>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<!-- testing -->
<assertj-core.version>3.10.0</assertj-core.version>
</properties>
</project>

11
core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/nosuchmethoderror/MainMenu.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.exceptions.nosuchmethoderror;
public class MainMenu {
public static void main(String[] args) {
System.out.println("Today's Specials: " + getSpecials());
}
public static String getSpecials() {
return SpecialToday.getDesert();
}
}

8
core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/nosuchmethoderror/SpecialToday.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.exceptions.nosuchmethoderror;
public class SpecialToday {
private static String desert = "Chocolate Cake";
public static String getDesert() {
return desert;
}
}

17
core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/nullmethodparameter/NullParameterExample.java Normal file
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@ -0,0 +1,17 @@
package com.baeldung.nullmethodparameter;
public class NullParameterExample {
public void processSomethingNotNull(Object myParameter) {
if (myParameter == null) {
throw new IllegalArgumentException("Parameter 'myParameter' cannot be null");
}
//Do something with the parameter
}
public void processSomethingElseNotNull(Object myParameter) {
if (myParameter == null) {
throw new NullPointerException("Parameter 'myParameter' cannot be null");
}
//Do something with the parameter
}
}

13
core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/nosuchmethoderror/MainMenuUnitTest.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.exceptions.nosuchmethoderror;
import static org.junit.Assert.assertNotNull;
import org.junit.jupiter.api.Test;
class MainMenuUnitTest {
@Test
void whenGetSpecials_thenNotNull() {
assertNotNull(MainMenu.getSpecials());
}
}

17
core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/nullmethodparameter/NullParameterExampleUnitTest.java Normal file
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@ -0,0 +1,17 @@
package com.baeldung.nullmethodparameter;
import org.junit.Test;
public class NullParameterExampleUnitTest {
@Test(expected = IllegalArgumentException.class)
public void givenNullParameter_whenProcessSomethingNotNull_thenIllegalArgumentException() {
NullParameterExample example = new NullParameterExample();
example.processSomethingNotNull(null);
}
@Test(expected = NullPointerException.class)
public void givenNullParameter_whenProcessSomethingElseNotNull_thenNullPointerException() {
NullParameterExample example = new NullParameterExample();
example.processSomethingElseNotNull(null);
}
}

3
core-java-modules/core-java-io-3/README.md
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@ -6,4 +6,7 @@ This module contains articles about core Java input and output (IO)
- [Java – Create a File](https://www.baeldung.com/java-how-to-create-a-file)
- [Check If a Directory Is Empty in Java](https://www.baeldung.com/java-check-empty-directory)
- [Check If a File or Directory Exists in Java](https://www.baeldung.com/java-file-directory-exists)
- [Copy a Directory in Java](https://www.baeldung.com/java-copy-directory)
- [Java Files Open Options](https://www.baeldung.com/java-file-options)
- [[<-- Prev]](/core-java-modules/core-java-io-2)

82
core-java-modules/core-java-io-3/src/test/java/com/baeldung/linenumber/LineAtGivenNumberUnitTest.java Normal file
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@ -0,0 +1,82 @@
package com.baeldung.linenumber;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.junit.Test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Stream;
import static org.junit.Assert.assertEquals;
public class LineAtGivenNumberUnitTest {
private static final String FILE_PATH = "src/test/resources/linesInput.txt";
@Test
public void givenFile_whenUsingBufferedReader_thenExtractedLineIsCorrect() throws IOException {
try (BufferedReader br = Files.newBufferedReader(Paths.get(FILE_PATH))) {
for (int i = 0; i < 3; i++) {
br.readLine();
}
String extractedLine = br.readLine();
assertEquals("Line 4", extractedLine);
}
}
@Test
public void givenFile_whenUsingScanner_thenExtractedLineIsCorrect() throws IOException {
try (Scanner scanner = new Scanner(new File(FILE_PATH))) {
for (int i = 0; i < 3; i++) {
scanner.nextLine();
}
String extractedLine = scanner.nextLine();
assertEquals("Line 4", extractedLine);
}
}
@Test
public void givenSmallFile_whenUsingFilesAPI_thenExtractedLineIsCorrect() throws IOException {
String extractedLine = Files.readAllLines(Paths.get(FILE_PATH)).get(4);
assertEquals("Line 5", extractedLine);
}
@Test
public void givenLargeFile_whenUsingFilesAPI_thenExtractedLineIsCorrect() throws IOException {
try (Stream<String> lines = Files.lines(Paths.get(FILE_PATH))) {
String extractedLine = lines.skip(4).findFirst().get();
assertEquals("Line 5", extractedLine);
}
}
@Test
public void givenFile_whenUsingFileUtils_thenExtractedLineIsCorrect() throws IOException {
ClassLoader classLoader = getClass().getClassLoader();
File file = new File(classLoader.getResource("linesInput.txt").getFile());
List<String> lines = FileUtils.readLines(file, "UTF-8");
String extractedLine = lines.get(0);
assertEquals("Line 1", extractedLine);
}
@Test
public void givenFile_whenUsingIOUtils_thenExtractedLineIsCorrect() throws IOException {
String fileContent = IOUtils.toString(new FileInputStream(FILE_PATH), StandardCharsets.UTF_8);
String extractedLine = fileContent.split(System.lineSeparator())[0];
assertEquals("Line 1", extractedLine);
}
}

5
core-java-modules/core-java-io-3/src/test/resources/linesInput.txt Normal file
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@ -0,0 +1,5 @@
Line 1
Line 2
Line 3
Line 4
Line 5

1
core-java-modules/core-java-jvm-2/README.md
View File

@ -10,4 +10,5 @@ This module contains articles about working with the Java Virtual Machine (JVM).
- [boolean and boolean[] Memory Layout in the JVM](https://www.baeldung.com/jvm-boolean-memory-layout)
- [Where Is the Array Length Stored in JVM?](https://www.baeldung.com/java-jvm-array-length)
- [Memory Address of Objects in Java](https://www.baeldung.com/java-object-memory-address)
- [List All Classes Loaded in a Specific Class Loader](https://www.baeldung.com/java-list-classes-class-loader)
- More articles: [[<-- prev]](/core-java-modules/core-java-jvm)

19
core-java-modules/core-java-jvm-2/src/main/java/com/baeldung/loadedclasslisting/Launcher.java Normal file
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@ -0,0 +1,19 @@
package com.baeldung.loadedclasslisting;
import java.util.Arrays;
public class Launcher {
public static void main(String[] args) {
printClassesLoadedBy("BOOTSTRAP");
printClassesLoadedBy("SYSTEM");
printClassesLoadedBy("EXTENSION");
}
private static void printClassesLoadedBy(String classLoaderType) {
System.out.println(classLoaderType + " ClassLoader : ");
Class<?>[] classes = ListLoadedClassesAgent.listLoadedClasses(classLoaderType);
Arrays.asList(classes)
.forEach(clazz -> System.out.println(clazz.getCanonicalName()));
}
}

40
core-java-modules/core-java-jvm-2/src/main/java/com/baeldung/loadedclasslisting/ListLoadedClassesAgent.java Normal file
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@ -0,0 +1,40 @@
package com.baeldung.loadedclasslisting;
import java.lang.instrument.Instrumentation;
public class ListLoadedClassesAgent {
private static Instrumentation instrumentation;
public static void premain(String agentArgs, Instrumentation instrumentation) {
ListLoadedClassesAgent.instrumentation = instrumentation;
}
public static Class<?>[] listLoadedClasses(String classLoaderType) {
if (instrumentation == null) {
throw new IllegalStateException(
"ListLoadedClassesAgent is not initialized.");
}
return instrumentation.getInitiatedClasses(
getClassLoader(classLoaderType));
}
private static ClassLoader getClassLoader(String classLoaderType) {
ClassLoader classLoader = null;
switch (classLoaderType) {
case "SYSTEM":
classLoader = ClassLoader.getSystemClassLoader();
break;
case "EXTENSION":
classLoader = ClassLoader.getSystemClassLoader().getParent();
break;
// passing a null value to the Instrumentation : getInitiatedClasses method
// defaults to the bootstrap class loader
case "BOOTSTRAP":
break;
default:
break;
}
return classLoader;
}
}

1
core-java-modules/core-java-jvm-2/src/main/java/com/baeldung/loadedclasslisting/MANIFEST.MF Normal file
View File

@ -0,0 +1 @@
Premain-Class: com.baeldung.loadedclasslisting.ListLoadedClassesAgent

7
core-java-modules/core-java-lambdas/src/main/java/com/baeldung/java8/lambda/tips/Bar.java
View File

@ -6,8 +6,11 @@ public interface Bar {
String method(String string);
default String defaultMethod() {
return "String from Bar";
default String defaultBar() {
return "Default String from Bar";
}
default String defaultCommon() {
return "Default Common from Bar";
}
}

8
core-java-modules/core-java-lambdas/src/main/java/com/baeldung/java8/lambda/tips/Baz.java
View File

@ -6,7 +6,11 @@ public interface Baz {
String method(String string);
default String defaultMethod() {
return "String from Baz";
default String defaultBaz() {
return "Default String from Baz";
}
default String defaultCommon(){
return "Default Common from Baz";
}
}

5
core-java-modules/core-java-lambdas/src/main/java/com/baeldung/java8/lambda/tips/FooExtended.java
View File

@ -5,8 +5,7 @@ package com.baeldung.java8.lambda.tips;
public interface FooExtended extends Baz, Bar {
@Override
default String defaultMethod() {
return Bar.super.defaultMethod();
default String defaultCommon() {
return Bar.super.defaultCommon();
}
}

4
core-java-modules/core-java-lambdas/src/test/java/com/baeldung/java8/lambda/tips/Java8FunctionalInteracesLambdasUnitTest.java
View File

@ -39,9 +39,9 @@ public class Java8FunctionalInteracesLambdasUnitTest {
@Test
public void defaultMethodFromExtendedInterface_whenReturnDefiniteString_thenCorrect() {
final FooExtended fooExtended = string -> string;
final String result = fooExtended.defaultMethod();
final String result = fooExtended.defaultCommon();
assertEquals("String from Bar", result);
assertEquals("Default Common from Bar", result);
}
@Test

1
core-java-modules/core-java-lang-3/README.md
View File

@ -4,4 +4,5 @@ This module contains articles about core features in the Java language
- [Class.isInstance vs Class.isAssignableFrom](https://www.baeldung.com/java-isinstance-isassignablefrom)
- [Converting a Java String Into a Boolean](https://www.baeldung.com/java-string-to-boolean)
- [When are Static Variables Initialized in Java?](https://www.baeldung.com/java-static-variables-initialization)
- [[<-- Prev]](/core-java-modules/core-java-lang-2)

60
core-java-modules/core-java-lang-math-2/src/main/java/com/baeldung/algorithms/largestpowerof2/LargestPowerOf2.java Normal file
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@ -0,0 +1,60 @@
package com.baeldung.algorithms.largestpowerof2;
import org.nd4j.linalg.io.Assert;
public class LargestPowerOf2 {
public long findLargestPowerOf2LessThanTheGivenNumber(long input) {
Assert.isTrue(input > 1, "Invalid input");
long firstPowerOf2 = 1;
long nextPowerOf2 = 2;
while (nextPowerOf2 < input) {
firstPowerOf2 = nextPowerOf2;
nextPowerOf2 = nextPowerOf2 * 2;
}
return firstPowerOf2;
}
public long findLargestPowerOf2LessThanTheGivenNumberUsingLogBase2(long input) {
Assert.isTrue(input > 1, "Invalid input");
long temp = input;
if (input % 2 == 0) {
temp = input - 1;
}
// Find log base 2 of a given number
long power = (long) (Math.log(temp) / Math.log(2));
long result = (long) Math.pow(2, power);
return result;
}
public long findLargestPowerOf2LessThanTheGivenNumberUsingBitwiseAnd(long input) {
Assert.isTrue(input > 1, "Invalid input");
long result = 1;
for (long i = input - 1; i > 1; i--) {
if ((i & (i - 1)) == 0) {
result = i;
break;
}
}
return result;
}
public long findLargestPowerOf2LessThanTheGivenNumberUsingBitShiftApproach(long input) {
Assert.isTrue(input > 1, "Invalid input");
long result = 1;
long powerOf2;
for (long i = 0; i < Long.BYTES * 8; i++) {
powerOf2 = 1 << i;
if (powerOf2 >= input) {
break;
}
result = powerOf2;
}
return result;
}
}

67
core-java-modules/core-java-lang-math-2/src/test/java/com/baeldung/algorithms/largestpowerof2/LargestPowerOf2UnitTest.java Normal file
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@ -0,0 +1,67 @@
package com.baeldung.algorithms.largestpowerof2;
import java.util.Arrays;
import java.util.Collection;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
@RunWith(Parameterized.class)
public class LargestPowerOf2UnitTest {
private long input;
private long expectedResult;
public LargestPowerOf2UnitTest(long input, long expectedResult) {
this.input = input;
this.expectedResult = expectedResult;
}
@Parameterized.Parameters(name = "{index}: verifyLargestPowerOf2LessThanTheGivenNumber({0}) = {1}")
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][] { { 2, 1 }, { 4, 2 }, { 500, 256 }, { 512, 256 }, { 1050, 1024 } });
}
@Test
public void givenValidInput_verifyLargestPowerOf2LessThanTheGivenNumber() {
LargestPowerOf2 largestPowerOf2 = new LargestPowerOf2();
long result = largestPowerOf2.findLargestPowerOf2LessThanTheGivenNumber(input);
Assert.assertEquals(expectedResult, result);
}
@Test
public void givenValidInput_verifyLargestPowerOf2LessThanTheGivenNumberUsingLogBase2() {
LargestPowerOf2 largestPowerOf2 = new LargestPowerOf2();
long result = largestPowerOf2.findLargestPowerOf2LessThanTheGivenNumberUsingLogBase2(input);
Assert.assertEquals(expectedResult, result);
}
@Test
public void givenValidInput_verifyLargestPowerOf2LessThanTheGivenNumberBitwiseAnd() {
LargestPowerOf2 largestPowerOf2 = new LargestPowerOf2();
long result = largestPowerOf2.findLargestPowerOf2LessThanTheGivenNumberUsingBitwiseAnd(input);
Assert.assertEquals(expectedResult, result);
}
@Test
public void givenValidInput_verifyLargestPowerOf2LessThanTheGivenNumberBitShiftApproach() {
LargestPowerOf2 largestPowerOf2 = new LargestPowerOf2();
long result = largestPowerOf2.findLargestPowerOf2LessThanTheGivenNumberUsingBitShiftApproach(input);
Assert.assertEquals(expectedResult, result);
}
@Test(expected = IllegalArgumentException.class)
public void givenInvalidInput_ShouldThrowException() {
LargestPowerOf2 largestPowerOf2 = new LargestPowerOf2();
largestPowerOf2.findLargestPowerOf2LessThanTheGivenNumber(1);
}
}

2
core-java-modules/core-java-lang-oop-types/README.md
View File

@ -3,6 +3,7 @@
This module contains articles about types in Java
### Relevant Articles:
- [Java Classes and Objects](https://www.baeldung.com/java-classes-objects)
- [Guide to the this Java Keyword](https://www.baeldung.com/java-this)
- [Nested Classes in Java](https://www.baeldung.com/java-nested-classes)
@ -10,3 +11,4 @@ This module contains articles about types in Java
- [Iterating Over Enum Values in Java](https://www.baeldung.com/java-enum-iteration)
- [Attaching Values to Java Enum](https://www.baeldung.com/java-enum-values)
- [A Guide to Java Enums](https://www.baeldung.com/a-guide-to-java-enums)
- [Determine if an Object is of Primitive Type](https://www.baeldung.com/java-object-primitive-type)

3
core-java-modules/core-java-os/README.md
View File

@ -12,5 +12,6 @@ This module contains articles about working with the operating system (OS) in Ja
- [How to Print Screen in Java](http://www.baeldung.com/print-screen-in-java)
- [Pattern Search with Grep in Java](http://www.baeldung.com/grep-in-java)
- [How to Run a Shell Command in Java](http://www.baeldung.com/run-shell-command-in-java)
- [Taking Screenshots Using Java](https://www.baeldung.com/java-taking-screenshots)
This module uses Java 9, so make sure to have the JDK 9 installed to run it.
This module uses Java 9, so make sure to have the JDK 9 installed to run it.

1
core-java-modules/core-java-reflection-2/README.md
View File

@ -1,3 +1,4 @@
### Relevant Articles:
- [Reading the Value of ‘private’ Fields from a Different Class in Java](https://www.baeldung.com/java-reflection-read-private-field-value)
- [Set Field Value With Reflection](https://www.baeldung.com/java-set-private-field-value)

20
core-java-modules/core-java/README.md
View File

@ -1,13 +1,13 @@
## Core Java Cookbooks and Examples
### Relevant Articles:
[Getting Started with Java Properties](http://www.baeldung.com/java-properties)
[Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
[Introduction to Java Serialization](http://www.baeldung.com/java-serialization)
[Guide to UUID in Java](http://www.baeldung.com/java-uuid)
[Compiling Java *.class Files with javac](http://www.baeldung.com/javac)
[Introduction to Javadoc](http://www.baeldung.com/javadoc)
[Guide to the Externalizable Interface in Java](http://www.baeldung.com/java-externalizable)
[What is the serialVersionUID?](http://www.baeldung.com/java-serial-version-uid)
[A Guide to the ResourceBundle](http://www.baeldung.com/java-resourcebundle)
[Merging java.util.Properties Objects](https://www.baeldung.com/java-merging-properties)
- [Getting Started with Java Properties](http://www.baeldung.com/java-properties)
- [Java Money and the Currency API](http://www.baeldung.com/java-money-and-currency)
- [Introduction to Java Serialization](http://www.baeldung.com/java-serialization)
- [Guide to UUID in Java](http://www.baeldung.com/java-uuid)
- [Compiling Java *.class Files with javac](http://www.baeldung.com/javac)
- [Introduction to Javadoc](http://www.baeldung.com/javadoc)
- [Guide to the Externalizable Interface in Java](http://www.baeldung.com/java-externalizable)
- [What is the serialVersionUID?](http://www.baeldung.com/java-serial-version-uid)
- [A Guide to the ResourceBundle](http://www.baeldung.com/java-resourcebundle)
- [Merging java.util.Properties Objects](https://www.baeldung.com/java-merging-properties)

8
core-java-modules/pom.xml
View File

@ -22,6 +22,7 @@
<!-- <module>core-java-11</module> --> <!-- We haven't upgraded to java 11. Fixing in BAEL-10841 -->
<!-- <module>core-java-12</module> --> <!-- We haven't upgraded to java 12. Fixing in BAEL-10841 -->
<!-- <module>core-java-13</module> --> <!-- We haven't upgraded to java 12. Fixing in BAEL-10841 -->
<!-- <module>core-java-14</module> --> <!-- We haven't upgraded to java 14.-->
<module>core-java-8</module>
<module>core-java-8-2</module>
@ -59,15 +60,20 @@
<module>core-java-concurrency-basic</module>
<module>core-java-concurrency-basic-2</module>
<module>core-java-concurrency-collections</module>
<module>core-java-concurrency-collections-2</module>
<module>core-java-console</module>
<!--<module>core-java-8-datetime</module>--> <!-- unit test case failure -->
<module>core-java-8-datetime-2</module>
<!-- <module>core-java-date-operations-1</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->
<module>core-java-date-operations-2</module>
<!-- We haven't upgraded to java 9. -->
<!-- <module>core-java-datetime-computations</module> <module>core-java-datetime-conversion</module> <module>core-java-datetime-java8</module> <module>core-java-datetime-string</module> -->
<module>core-java-8-datetime</module>
<module>core-java-exceptions</module>
<module>core-java-exceptions-2</module>
<module>core-java-exceptions-3</module>
<module>core-java-function</module>
<module>core-java-io</module>

2
core-kotlin-modules/core-kotlin/README.md
View File

@ -3,6 +3,7 @@
This module contains articles about Kotlin core features.
### Relevant articles:
- [Introduction to the Kotlin Language](https://www.baeldung.com/kotlin-intro)
- [Kotlin Java Interoperability](https://www.baeldung.com/kotlin-java-interoperability)
- [Get a Random Number in Kotlin](https://www.baeldung.com/kotlin-random-number)
@ -10,3 +11,4 @@ This module contains articles about Kotlin core features.
- [Kotlin Ternary Conditional Operator](https://www.baeldung.com/kotlin-ternary-operator)
- [Sequences in Kotlin](https://www.baeldung.com/kotlin/sequences)
- [Converting Kotlin Data Class from JSON using GSON](https://www.baeldung.com/kotlin-json-convert-data-class)
- [Exception Handling in Kotlin](https://www.baeldung.com/kotlin/exception-handling)

1
deeplearning4j/README.md
View File

@ -5,3 +5,4 @@ This module contains articles about Deeplearning4j.
### Relevant Articles:
- [A Guide to Deeplearning4j](https://www.baeldung.com/deeplearning4j)
- [Logistic Regression in Java](https://www.baeldung.com/java-logistic-regression)
- [How to Implement a CNN with Deeplearning4j](https://www.baeldung.com/java-cnn-deeplearning4j)

1
docker/README.md
View File

@ -1,3 +1,4 @@
## Relevant Articles:
- [Introduction to Docker Compose](https://www.baeldung.com/docker-compose)
- [Creating Docker Images with Spring Boot](https://www.baeldung.com/spring-boot-docker-images)

3
docker/docker-spring-boot/README.md
View File

@ -1,3 +0,0 @@
### Relevant Article:
- [Creating Docker Images with Spring Boot](https://www.baeldung.com/spring-boot-docker-images)

5
excelformula/README.md
View File

@ -1,5 +0,0 @@
## Apache POI
This module contains articles about Apache POI
### Relevant Articles:

3
gradle-5/settings.gradle
View File

@ -1,3 +1,4 @@
rootProject.name='gradle-5-articles'
include 'java-exec'
include 'unused-dependencies'
include 'unused-dependencies'
include 'source-sets'

1
gradle-5/source-sets/.gitignore vendored Normal file
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@ -0,0 +1 @@
/build/

67
gradle-5/source-sets/build.gradle Normal file
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@ -0,0 +1,67 @@
apply plugin: "eclipse"
apply plugin: "java"
description = "Source Sets example"
task printSourceSetInformation(){
description = "Print source set information"
doLast{
sourceSets.each { srcSet ->
println "["+srcSet.name+"]"
print "-->Source directories: "+srcSet.allJava.srcDirs+"\n"
print "-->Output directories: "+srcSet.output.classesDirs.files+"\n"
print "-->Compile classpath:\n"
srcSet.compileClasspath.files.each {
print " "+it.path+"\n"
}
println ""
}
}
}
sourceSets{
itest {
compileClasspath += sourceSets.main.output
runtimeClasspath += sourceSets.main.output
java {
}
}
}
test {
testLogging {
events "passed","skipped", "failed"
}
}
dependencies {
implementation('org.apache.httpcomponents:httpclient:4.5.12')
testImplementation('junit:junit:4.12')
itestImplementation('com.google.guava:guava:29.0-jre')
}
task itest(type: Test) {
description = "Run integration tests"
group = "verification"
testClassesDirs = sourceSets.itest.output.classesDirs
classpath = sourceSets.itest.runtimeClasspath
}
itest {
testLogging {
events "passed","skipped", "failed"
}
}
configurations {
itestImplementation.extendsFrom(testImplementation)
itestRuntimeOnly.extendsFrom(testRuntimeOnly)
}
eclipse {
classpath {
plusConfigurations+=[configurations.itestCompileClasspath]
}
}

25
gradle-5/source-sets/src/itest/java/com/baeldung/itest/SourceSetsItest.java Normal file
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@ -0,0 +1,25 @@
package com.baeldung.itest;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import java.util.List;
import org.junit.Test;
import com.baeldung.main.SourceSetsObject;
import com.google.common.collect.ImmutableList;
public class SourceSetsItest {
@Test
public void givenImmutableList_whenRun_ThenSuccess() {
SourceSetsObject underTest = new SourceSetsObject("lorem", "ipsum");
List<String> someStrings = ImmutableList.of("Baeldung", "is", "cool");
assertThat(underTest.getUser(), is("lorem"));
assertThat(underTest.getPassword(), is("ipsum"));
assertThat(someStrings.size(), is(3));
}
}

9
gradle-5/source-sets/src/main/java/com/baeldung/main/SourceSetsMain.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.main;
public class SourceSetsMain {
public static void main(String[] args) {
System.out.println("Hell..oh...world!");
}
}

21
gradle-5/source-sets/src/main/java/com/baeldung/main/SourceSetsObject.java Normal file
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@ -0,0 +1,21 @@
package com.baeldung.main;
public class SourceSetsObject {
private final String user;
private final String password;
public SourceSetsObject(String user, String password) {
this.user = user;
this.password = password;
}
public String getPassword() {
return password;
}
public String getUser() {
return user;
}
}

20
gradle-5/source-sets/src/test/java/com/baeldung/test/SourceSetsTest.java Normal file
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@ -0,0 +1,20 @@
package com.baeldung.test;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import org.junit.Test;
import com.baeldung.main.SourceSetsObject;
public class SourceSetsTest {
@Test
public void whenRun_ThenSuccess() {
SourceSetsObject underTest = new SourceSetsObject("lorem", "ipsum");
assertThat(underTest.getUser(), is("lorem"));
assertThat(underTest.getPassword(), is("ipsum"));
}
}

2
java-collections-conversions-2/README.md
View File

@ -3,6 +3,8 @@
This module contains articles about conversions among Collection types and arrays in Java.
### Relevant Articles:
- [Array to String Conversions](https://www.baeldung.com/java-array-to-string)
- [Mapping Lists with ModelMapper](https://www.baeldung.com/java-modelmapper-lists)
- [Converting List to Map With a Custom Supplier](https://www.baeldung.com/list-to-map-supplier)
- More articles: [[<-- prev]](../java-collections-conversions)

32
java-collections-conversions-2/src/test/java/com/baeldung/arrayconversion/ArrayToListConversionUnitTest.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.arrayconversion;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class ArrayToListConversionUnitTest {
@Test(expected = UnsupportedOperationException.class)
public void givenAnArray_whenConvertingToList_returnUnmodifiableListUnitTest() {
String[] stringArray = new String[] { "A", "B", "C", "D" };
List<String> stringList = Arrays.asList(stringArray);
System.out.println(stringList);
stringList.set(0, "E");
System.out.println(stringList);
System.out.println(Arrays.toString(stringArray));
stringList.add("F");
}
@Test
public void givenAnArray_whenConvertingToList_returnModifiableListUnitTest() {
String[] stringArray = new String[] { "A", "B", "C", "D" };
List<String> stringList = new ArrayList<>(Arrays.asList(stringArray));
System.out.println(stringList);
stringList.set(0, "E");
System.out.println(stringList);
System.out.println(Arrays.toString(stringArray));
stringList.add("F");
}
}

1
java-collections-conversions/README.md
View File

@ -5,7 +5,6 @@ This module contains articles about conversions among Collection types and array
### Relevant Articles:
- [Converting between an Array and a List in Java](https://www.baeldung.com/convert-array-to-list-and-list-to-array)
- [Converting between an Array and a Set in Java](https://www.baeldung.com/convert-array-to-set-and-set-to-array)
- [Converting between a List and a Set in Java](https://www.baeldung.com/convert-list-to-set-and-set-to-list)
- [Convert a Map to an Array, List or Set in Java](https://www.baeldung.com/convert-map-values-to-array-list-set)
- [Converting a List to String in Java](https://www.baeldung.com/java-list-to-string)
- [How to Convert List to Map in Java](https://www.baeldung.com/java-list-to-map)

36
java-collections-conversions/src/test/java/com/baeldung/java/collections/JavaCollectionConversionUnitTest.java
View File

@ -101,42 +101,6 @@ public class JavaCollectionConversionUnitTest {
final int[] primitiveTargetArray = ArrayUtils.toPrimitive(targetArray);
}
// Set -> List; List -> Set
public final void givenUsingCoreJava_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = new ArrayList<>(sourceSet);
}
public final void givenUsingCoreJava_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = new HashSet<>(sourceList);
}
public final void givenUsingGuava_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = Lists.newArrayList(sourceSet);
}
public final void givenUsingGuava_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = Sets.newHashSet(sourceList);
}
public final void givenUsingCommonsCollections_whenListConvertedToSet_thenCorrect() {
final List<Integer> sourceList = Lists.newArrayList(0, 1, 2, 3, 4, 5);
final Set<Integer> targetSet = new HashSet<>(6);
CollectionUtils.addAll(targetSet, sourceList);
}
public final void givenUsingCommonsCollections_whenSetConvertedToList_thenCorrect() {
final Set<Integer> sourceSet = Sets.newHashSet(0, 1, 2, 3, 4, 5);
final List<Integer> targetList = new ArrayList<>(6);
CollectionUtils.addAll(targetList, sourceSet);
}
// Map (values) -> Array, List, Set
@Test

3
java-numbers-4/README.md Normal file
View File

@ -0,0 +1,3 @@
### Relevant Articles:
- [Probability in Java](https://www.baeldung.com/java-probability)

2
javax-servlets/README.md
View File

@ -12,4 +12,4 @@ This module contains articles about Servlets.
- [Jakarta EE Servlet Exception Handling](https://www.baeldung.com/servlet-exceptions)
- [Context and Servlet Initialization Parameters](https://www.baeldung.com/context-servlet-initialization-param)
- [The Difference between getRequestURI and getPathInfo in HttpServletRequest](https://www.baeldung.com/http-servlet-request-requesturi-pathinfo)
- Difference between request.getSession() and request.getSession(true)
- [Difference between request.getSession() and request.getSession(true)](https://www.baeldung.com/java-request-getsession)

6
jgit/src/main/java/com/baeldung/jgit/porcelain/AddFile.java
View File

@ -6,6 +6,8 @@ import com.baeldung.jgit.helper.Helper;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Repository;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Simple snippet which shows how to add a file to the index
@ -14,6 +16,8 @@ import org.eclipse.jgit.lib.Repository;
*/
public class AddFile {
private static final Logger logger = LoggerFactory.getLogger(AddFile.class);
public static void main(String[] args) throws IOException, GitAPIException {
// prepare a new test-repository
try (Repository repository = Helper.createNewRepository()) {
@ -29,7 +33,7 @@ public class AddFile {
.addFilepattern("testfile")
.call();
System.out.println("Added file " + myfile + " to repository at " + repository.getDirectory());
logger.debug("Added file " + myfile + " to repository at " + repository.getDirectory());
}
}
}

6
jgit/src/main/java/com/baeldung/jgit/porcelain/CommitAll.java
View File

@ -7,6 +7,8 @@ import com.baeldung.jgit.helper.Helper;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Repository;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Simple snippet which shows how to commit all files
@ -15,6 +17,8 @@ import org.eclipse.jgit.lib.Repository;
*/
public class CommitAll {
private static final Logger logger = LoggerFactory.getLogger(CommitAll.class);
public static void main(String[] args) throws IOException, GitAPIException {
// prepare a new test-repository
try (Repository repository = Helper.createNewRepository()) {
@ -44,7 +48,7 @@ public class CommitAll {
.call();
System.out.println("Committed all changes to repository at " + repository.getDirectory());
logger.debug("Committed all changes to repository at " + repository.getDirectory());
}
}
}

10
jgit/src/main/java/com/baeldung/jgit/porcelain/CreateAndDeleteTag.java
View File

@ -9,6 +9,8 @@ import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Simple snippet which shows how to create a tag
@ -17,6 +19,8 @@ import org.eclipse.jgit.revwalk.RevWalk;
*/
public class CreateAndDeleteTag {
private static final Logger logger = LoggerFactory.getLogger(CreateAndDeleteTag.class);
public static void main(String[] args) throws IOException, GitAPIException {
// prepare test-repository
try (Repository repository = Helper.openJGitRepository()) {
@ -26,7 +30,7 @@ public class CreateAndDeleteTag {
// set it on the current HEAD
Ref tag = git.tag().setName("tag_for_testing").call();
System.out.println("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
logger.debug("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
// remove the tag again
git.tagDelete().setTags("tag_for_testing").call();
@ -36,14 +40,14 @@ public class CreateAndDeleteTag {
try (RevWalk walk = new RevWalk(repository)) {
RevCommit commit = walk.parseCommit(id);
tag = git.tag().setObjectId(commit).setName("tag_for_testing").call();
System.out.println("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
logger.debug("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
// remove the tag again
git.tagDelete().setTags("tag_for_testing").call();
// create an annotated tag
tag = git.tag().setName("tag_for_testing").setAnnotated(true).call();
System.out.println("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
logger.debug("Created/moved tag " + tag + " to repository at " + repository.getDirectory());
// remove the tag again
git.tagDelete().setTags("tag_for_testing").call();

25
jgit/src/main/java/com/baeldung/jgit/porcelain/Log.java
View File

@ -7,6 +7,9 @@ import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Simple snippet which shows how to get the commit-ids for a file to provide log information.
*
@ -14,6 +17,8 @@ import org.eclipse.jgit.revwalk.RevCommit;
*/
public class Log {
private static final Logger logger = LoggerFactory.getLogger(Log.class);
@SuppressWarnings("unused")
public static void main(String[] args) throws IOException, GitAPIException {
try (Repository repository = Helper.openJGitRepository()) {
@ -22,30 +27,30 @@ public class Log {
.call();
int count = 0;
for (RevCommit rev : logs) {
//System.out.println("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
logger.trace("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
count++;
}
System.out.println("Had " + count + " commits overall on current branch");
logger.debug("Had " + count + " commits overall on current branch");
logs = git.log()
.add(repository.resolve(git.getRepository().getFullBranch()))
.call();
count = 0;
for (RevCommit rev : logs) {
System.out.println("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
logger.trace("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
count++;
}
System.out.println("Had " + count + " commits overall on "+git.getRepository().getFullBranch());
logger.debug("Had " + count + " commits overall on "+git.getRepository().getFullBranch());
logs = git.log()
.all()
.call();
count = 0;
for (RevCommit rev : logs) {
//System.out.println("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
logger.trace("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
count++;
}
System.out.println("Had " + count + " commits overall in repository");
logger.debug("Had " + count + " commits overall in repository");
logs = git.log()
// for all log.all()
@ -53,10 +58,10 @@ public class Log {
.call();
count = 0;
for (RevCommit rev : logs) {
//System.out.println("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
logger.trace("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
count++;
}
System.out.println("Had " + count + " commits on README.md");
logger.debug("Had " + count + " commits on README.md");
logs = git.log()
// for all log.all()
@ -64,10 +69,10 @@ public class Log {
.call();
count = 0;
for (RevCommit rev : logs) {
//System.out.println("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
logger.trace("Commit: " + rev /* + ", name: " + rev.getName() + ", id: " + rev.getId().getName() */);
count++;
}
System.out.println("Had " + count + " commits on pom.xml");
logger.debug("Had " + count + " commits on pom.xml");
}
}
}

5
jgit/src/test/java/com/baeldung/jgit/porcelain/PorcelainUnitTest.java
View File

@ -11,7 +11,8 @@ public class PorcelainUnitTest {
CommitAll.main(null);
CreateAndDeleteTag.main(null);
Log.main(null);
Log.main(null);
}
}

1
jmh/README.md
View File

@ -6,3 +6,4 @@ This module contains articles about the Java Microbenchmark Harness (JMH).
- [Microbenchmarking with Java](https://www.baeldung.com/java-microbenchmark-harness)
- [A Guide to False Sharing and @Contended](https://www.baeldung.com/java-false-sharing-contended)
- [Performance Comparison of boolean[] vs BitSet](https://www.baeldung.com/java-boolean-array-bitset-performance)

2
json-2/README.md
View File

@ -3,5 +3,7 @@
This module contains articles about JSON.
### Relevant Articles:
- [Introduction to Jsoniter](https://www.baeldung.com/java-jsoniter)
- [Introduction to Moshi Json](https://www.baeldung.com/java-json-moshi)
- [Hypermedia Serialization With JSON-LD](https://www.baeldung.com/json-linked-data)

1
jsoup/README.md
View File

@ -5,6 +5,7 @@ This module contains articles about jsoup.
### Relevant Articles:
- [Parsing HTML in Java with Jsoup](https://www.baeldung.com/java-with-jsoup)
- [How to add proxy support to Jsoup?](https://www.baeldung.com/java-jsoup-proxy)
- [Preserving Line Breaks When Using Jsoup](https://www.baeldung.com/jsoup-line-breaks)
### Build the Project

14
libraries-testing/pom.xml
View File

@ -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/xsd/maven-4.0.0.xsd">
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>
<artifactId>libraries-testing</artifactId>
<name>libraries-testing</name>
@ -158,6 +158,13 @@
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.tngtech.archunit</groupId>
<artifactId>archunit-junit5</artifactId>
<version>${archunit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@ -193,7 +200,7 @@
<properties>
<asciidoctor.version>1.5.7.1</asciidoctor.version>
<serenity.version>1.9.9</serenity.version>
<serenity.version>1.9.9</serenity.version>
<serenity.jbehave.version>1.9.0</serenity.jbehave.version>
<serenity.jira.version>1.9.0</serenity.jira.version>
<serenity.plugin.version>1.9.27</serenity.plugin.version>
@ -210,6 +217,7 @@
<maven-compiler-plugin.target>1.8</maven-compiler-plugin.target>
<maven-compiler-plugin.source>1.8</maven-compiler-plugin.source>
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
<archunit.version>0.14.1</archunit.version>
</properties>
</project>

37
libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/SmurfsRepository.java Normal file
View File

@ -0,0 +1,37 @@
package com.baeldung.archunit.smurfs.persistence;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.TreeMap;
import com.baeldung.archunit.smurfs.persistence.domain.Smurf;
import static java.util.stream.Collectors.toList;
public class SmurfsRepository {
private static Map<String,Smurf> smurfs = Collections.synchronizedMap(new TreeMap<>());
static {
// Just a few here. A full list can be found
// at https://smurfs.fandom.com/wiki/List_of_Smurf_characters
smurfs.put("Papa", new Smurf("Papa", true, true));
smurfs.put("Actor", new Smurf("Actor", true, true));
smurfs.put("Alchemist", new Smurf("Alchemist", true, true));
smurfs.put("Archeologist", new Smurf("Archeologist", true, true));
smurfs.put("Architect", new Smurf("Architect", true, true));
smurfs.put("Baby", new Smurf("Baby", true, true));
smurfs.put("Baker", new Smurf("Baker", true, true));
}
public List<Smurf> findAll() {
return Collections.unmodifiableList(smurfs.values().stream().collect(toList()));
}
public Optional<Smurf> findByName(String name) {
return Optional.of(smurfs.get(name));
}
}

37
libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/domain/Smurf.java Normal file
View File

@ -0,0 +1,37 @@
package com.baeldung.archunit.smurfs.persistence.domain;
public class Smurf {
private String name;
private boolean comic;
private boolean cartoon;
public Smurf(String name, boolean comic, boolean cartoon) {
this.name = name;
this.comic = comic;
this.cartoon = cartoon;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean isComic() {
return comic;
}
public void setCommic(boolean comic) {
this.comic = comic;
}
public boolean isCartoon() {
return cartoon;
}
public void setCartoon(boolean cartoon) {
this.cartoon = cartoon;
}
}

27
libraries-testing/src/main/java/com/baeldung/archunit/smurfs/presentation/SmurfsController.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.archunit.smurfs.presentation;
import java.util.List;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.baeldung.archunit.smurfs.service.SmurfsService;
import com.baeldung.archunit.smurfs.service.dto.SmurfDTO;
@RequestMapping(value = "/smurfs", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@RestController
public class SmurfsController {
private SmurfsService smurfs;
public SmurfsController(SmurfsService smurfs) {
this.smurfs = smurfs;
}
@GetMapping
public List<SmurfDTO> getSmurfs() {
return smurfs.findAll();
}
}

35
libraries-testing/src/main/java/com/baeldung/archunit/smurfs/service/SmurfsService.java Normal file
View File

@ -0,0 +1,35 @@
package com.baeldung.archunit.smurfs.service;
import java.util.List;
import java.util.stream.Collectors;
import org.springframework.stereotype.Component;
import com.baeldung.archunit.smurfs.persistence.SmurfsRepository;
import com.baeldung.archunit.smurfs.persistence.domain.Smurf;
import com.baeldung.archunit.smurfs.service.dto.SmurfDTO;
@Component
public class SmurfsService {
private SmurfsRepository repository;
public SmurfsService(SmurfsRepository repository) {
this.repository = repository;
}
public List<SmurfDTO> findAll() {
return repository.findAll()
.stream()
.map(SmurfsService::toDTO)
.collect(Collectors.toList());
}
public static SmurfDTO toDTO(Smurf smurf) {
return new SmurfDTO(smurf.getName(),smurf.isComic(), smurf.isCartoon());
}
}

41
libraries-testing/src/main/java/com/baeldung/archunit/smurfs/service/dto/SmurfDTO.java Normal file
View File

@ -0,0 +1,41 @@
package com.baeldung.archunit.smurfs.service.dto;
public class SmurfDTO {
private String name;
private boolean comic;
private boolean cartoon;
public SmurfDTO() {}
public SmurfDTO(String name, boolean comic, boolean cartoon) {
this.name = name;
this.comic = comic;
this.cartoon = cartoon;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean isComic() {
return comic;
}
public void setCommic(boolean comic) {
this.comic = comic;
}
public boolean isCartoon() {
return cartoon;
}
public void setCartoon(boolean cartoon) {
this.cartoon = cartoon;
}
}

76
libraries-testing/src/test/java/com/baeldung/archunit/smurfs/SmurfsArchUnitTest.java Normal file
View File

@ -0,0 +1,76 @@
package com.baeldung.archunit.smurfs;
import com.tngtech.archunit.core.domain.JavaClasses;
import com.tngtech.archunit.core.importer.ClassFileImporter;
import com.tngtech.archunit.lang.ArchRule;
import com.tngtech.archunit.library.Architectures.LayeredArchitecture;
import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.classes;
import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.noClasses;
import static com.tngtech.archunit.library.Architectures.layeredArchitecture;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.Test;
public class SmurfsArchUnitTest {
@Test
public void givenPresentationLayerClasses_thenWrongCheckFails() {
JavaClasses jc = new ClassFileImporter().importPackages("com.baeldung.archunit.smurfs");
ArchRule r1 = classes()
.that()
.resideInAPackage("..presentation..")
.should().onlyDependOnClassesThat()
.resideInAPackage("..service..");
assertThrows(AssertionError.class, ()-> r1.check(jc)) ;
}
@Test
public void givenPresentationLayerClasses_thenCheckWithFrameworkDependenciesSuccess() {
JavaClasses jc = new ClassFileImporter().importPackages("com.baeldung.archunit.smurfs");
ArchRule r1 = classes()
.that()
.resideInAPackage("..presentation..")
.should().onlyDependOnClassesThat()
.resideInAnyPackage("..service..", "java..", "javax..", "org.springframework..");
r1.check(jc);
}
@Test
public void givenPresentationLayerClasses_thenNoPersistenceLayerAccess() {
JavaClasses jc = new ClassFileImporter().importPackages("com.baeldung.archunit.smurfs");
ArchRule r1 = noClasses()
.that()
.resideInAPackage("..presentation..")
.should().dependOnClassesThat()
.resideInAPackage("..persistence..");
r1.check(jc);
}
@Test
public void givenApplicationClasses_thenNoLayerViolationsShouldExist() {
JavaClasses jc = new ClassFileImporter().importPackages("com.baeldung.archunit.smurfs");
LayeredArchitecture arch = layeredArchitecture()
// Define layers
.layer("Presentation").definedBy("..presentation..")
.layer("Service").definedBy("..service..")
.layer("Persistence").definedBy("..persistence..")
// Add constraints
.whereLayer("Presentation").mayNotBeAccessedByAnyLayer()
.whereLayer("Service").mayOnlyBeAccessedByLayers("Presentation")
.whereLayer("Persistence").mayOnlyBeAccessedByLayers("Service");
arch.check(jc);
}
}

5
libraries-testing/src/test/resources/logback.xml Normal file
View File

@ -0,0 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<logger name="org.dbunit" level="INFO" />
</configuration>

0
spring-security-modules/spring-security-thymeleaf/src/main/resources/application.properties → logging-modules/log-mdc/Dockerfile
View File

4
logging-modules/log-mdc/pom.xml
View File

@ -10,9 +10,9 @@
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-spring-4</artifactId>
<artifactId>parent-spring-5</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-spring-4</relativePath>
<relativePath>../../parent-spring-5</relativePath>
</parent>
<dependencies>

40
maven-modules/maven-profiles/pom.xml
View File

@ -66,27 +66,29 @@
</file>
</activation>
</profile>
<profile>
<id>show-active-profiles</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-help-plugin</artifactId>
<version>${help.plugin.version}</version>
<executions>
<execution>
<id>show-profiles</id>
<phase>compile</phase>
<goals>
<goal>active-profiles</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-help-plugin</artifactId>
<version>${help.plugin.version}</version>
<executions>
<execution>
<id>show-profiles</id>
<phase>compile</phase>
<goals>
<goal>active-profiles</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<properties>
<help.plugin.version>3.2.0</help.plugin.version>
</properties>

2
maven-modules/optional-dependencies/README.md
View File

@ -1,3 +1,3 @@
### Relevant Articles:
- Optional Dependency in Maven
- [Optional Dependency in Maven](https://www.baeldung.com/maven-optional-dependency)

35
open-liberty/pom.xml
View File

@ -27,6 +27,7 @@
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>${version.derby}</version>
<scope>provided</scope>
</dependency>
<!-- For tests -->
@ -70,27 +71,16 @@
<groupId>io.openliberty.tools</groupId>
<artifactId>liberty-maven-plugin</artifactId>
<version>${version.liberty-maven-plugin}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>${version.maven-dependency-plugin}</version>
<executions>
<execution>
<id>copy-derby-dependency</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<includeArtifactIds>derby</includeArtifactIds>
<outputDirectory>${project.build.directory}/liberty/wlp/usr/shared/resources/</outputDirectory>
<systemPropertyVariables>
<liberty.test.port>${testServerHttpPort}</liberty.test.port>
</systemPropertyVariables>
</configuration>
</execution>
</executions>
<configuration>
<copyDependencies>
<location>${project.build.directory}/liberty/wlp/usr/shared/resources/</location>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>${version.derby}</version>
</dependency>
</copyDependencies>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
@ -112,8 +102,7 @@
<version.jakarta.jakartaee-web-api>8.0.0</version.jakarta.jakartaee-web-api>
<version.microprofile>3.2</version.microprofile>
<version.derby>10.14.2.0</version.derby>
<version.liberty-maven-plugin>3.1</version.liberty-maven-plugin>
<version.maven-dependency-plugin>2.10</version.maven-dependency-plugin>
<version.liberty-maven-plugin>3.3-M3</version.liberty-maven-plugin>
<version.maven-war-plugin>3.2.3</version.maven-war-plugin>
<version.junit>4.12</version.junit>
<version.yasson>1.0.5</version.yasson>

1
patterns/pom.xml
View File

@ -21,6 +21,7 @@
<module>dip</module>
<module>cqrs-es</module>
<module>front-controller</module>
<module>hexagonal-architecture</module>
<module>intercepting-filter</module>
<module>solid</module>
</modules>

1
patterns/solid/README.md
View File

@ -4,3 +4,4 @@
- [Single Responsibility Principle in Java](https://www.baeldung.com/java-single-responsibility-principle)
- [Open/Closed Principle in Java](https://www.baeldung.com/java-open-closed-principle)
- [Interface Segregation Principle in Java](https://www.baeldung.com/java-interface-segregation)
- [Liskov Substitution Principle in Java](https://www.baeldung.com/java-liskov-substitution-principle)

1
performance-tests/README.md
View File

@ -5,6 +5,7 @@ This module contains articles about performance testing.
### Relevant Articles:
- [Performance of Java Mapping Frameworks](https://www.baeldung.com/java-performance-mapping-frameworks)
- [Performance Effects of Exceptions in Java](https://www.baeldung.com/java-exceptions-performance)
### Running

84
performance-tests/pom.xml
View File

@ -19,27 +19,14 @@
<version>${orika.version}</version>
</dependency>
<dependency>
<groupId>net.sf.dozer</groupId>
<artifactId>dozer</artifactId>
<groupId>com.github.dozermapper</groupId>
<artifactId>dozer-core</artifactId>
<version>${dozer.version}</version>
</dependency>
<dependency>
<groupId>io.craftsman</groupId>
<artifactId>dozer-jdk8-support</artifactId>
<version>${dozer-jdk8-support.version}</version>
</dependency>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-jdk8</artifactId>
<version>${mapstruct-jdk8.version}</version>
<optional>true</optional>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mapstruct/mapstruct-processor -->
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${mapstruct-jdk8.version}</version>
<scope>provided</scope>
<artifactId>mapstruct</artifactId>
<version>${mapstruct.version}</version>
</dependency>
<dependency>
@ -77,10 +64,15 @@
<source>${javac.target}</source>
<target>${javac.target}</target>
<annotationProcessorPaths>
<path>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh.version}</version>
</path>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${mapstruct-processor.version}</version>
<version>${mapstruct.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
@ -120,28 +112,16 @@
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
<configuration>
<archive>
<manifest>
<mainClass>com.baeldung.performancetests.MappingFrameworksPerformance</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<version>${clean.plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.1</version>
<version>${deploy.plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
@ -179,19 +159,13 @@
<!--
JMH version to use with this project.
-->
<jmh.version>1.21</jmh.version>
<orika.version>1.5.2</orika.version>
<dozer.version>5.5.1</dozer.version>
<dozer-jdk8-support.version>1.0.2</dozer-jdk8-support.version>
<mapstruct-jdk8.version>1.2.0.Final</mapstruct-jdk8.version>
<modelmapper.version>1.1.0</modelmapper.version>
<jmapper.version>1.6.0.1</jmapper.version>
<mapstruct-processor.version>1.2.0.Final</mapstruct-processor.version>
<jmh-core.version>1.21</jmh-core.version>
<jmh-generator.version>1.21</jmh-generator.version>
<maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
<maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
<jmh.version>1.23</jmh.version>
<orika.version>1.5.4</orika.version>
<dozer.version>6.5.0</dozer.version>
<mapstruct.version>1.3.1.Final</mapstruct.version>
<modelmapper.version>2.3.8</modelmapper.version>
<jmapper.version>1.6.1.CR2</jmapper.version>
<!--
Java source/target to use for compilation.
-->
@ -201,14 +175,16 @@
Name of the benchmark Uber-JAR to generate.
-->
<uberjar.name>benchmarks</uberjar.name>
<compiler.plugin.version>3.1</compiler.plugin.version>
<shade.plugin.version>2.2</shade.plugin.version>
<install.version>2.5.1</install.version>
<jar.plugin.version>2.4</jar.plugin.version>
<javadoc.plugin.version>2.9.1</javadoc.plugin.version>
<resources.plugin.version>2.6</resources.plugin.version>
<site.plugin.version>3.3</site.plugin.version>
<source.plugin.version>2.2.1</source.plugin.version>
<clean.plugin.version>3.1.0</clean.plugin.version>
<deploy.plugin.version>3.0.0-M1</deploy.plugin.version>
<compiler.plugin.version>3.8.1</compiler.plugin.version>
<shade.plugin.version>3.2.4</shade.plugin.version>
<install.version>3.0.0-M1</install.version>
<jar.plugin.version>3.2.0</jar.plugin.version>
<javadoc.plugin.version>3.2.0</javadoc.plugin.version>
<resources.plugin.version>3.1.0</resources.plugin.version>
<site.plugin.version>3.9.1</site.plugin.version>
<source.plugin.version>3.2.1</source.plugin.version>
<surefire.plugin.version>2.17</surefire.plugin.version>
</properties>

40
performance-tests/src/main/java/com/baeldung/performancetests/dozer/DozerConverter.java
View File

@ -2,28 +2,28 @@ package com.baeldung.performancetests.dozer;
import com.baeldung.performancetests.Converter;
import com.baeldung.performancetests.model.destination.DestinationCode;
import com.baeldung.performancetests.model.destination.Order;
import com.baeldung.performancetests.model.source.SourceCode;
import com.baeldung.performancetests.model.source.SourceOrder;
import com.baeldung.performancetests.model.destination.Order;
import org.dozer.DozerBeanMapper;
import org.dozer.Mapper;
import com.github.dozermapper.core.DozerBeanMapperBuilder;
import com.github.dozermapper.core.Mapper;
public class DozerConverter implements Converter {
private final Mapper mapper;
public class DozerConverter implements Converter {
private final Mapper mapper;
public DozerConverter() {
DozerBeanMapper mapper = new DozerBeanMapper();
mapper.addMapping(DozerConverter.class.getResourceAsStream("/dozer-mapping.xml"));
this.mapper = mapper;
}
@Override
public Order convert(SourceOrder sourceOrder) {
return mapper.map(sourceOrder,Order.class);
}
@Override
public DestinationCode convert(SourceCode sourceCode) {
return mapper.map(sourceCode, DestinationCode.class);
}
public DozerConverter() {
this.mapper = DozerBeanMapperBuilder.create()
.withMappingFiles("dozer-mapping.xml")
.build();
}
@Override
public Order convert(SourceOrder sourceOrder) {
return mapper.map(sourceOrder, Order.class);
}
@Override
public DestinationCode convert(SourceCode sourceCode) {
return mapper.map(sourceCode, DestinationCode.class);
}
}

6
performance-tests/src/main/resources/dozer-mapping.xml
View File

@ -1,8 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://dozer.sourceforge.net
http://dozer.sourceforge.net/schema/beanmapping.xsd">
<mappings xmlns="http://dozermapper.github.io/schema/bean-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://dozermapper.github.io/schema/bean-mapping https://dozermapper.github.io/schema/bean-mapping.xsd">
<configuration>
<stop-on-errors>true</stop-on-errors>

6
performance-tests/src/test/resources/dozer-mapping.xml
View File

@ -1,8 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://dozer.sourceforge.net
http://dozer.sourceforge.net/schema/beanmapping.xsd">
<mappings xmlns="http://dozermapper.github.io/schema/bean-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://dozermapper.github.io/schema/bean-mapping https://dozermapper.github.io/schema/bean-mapping.xsd">
<configuration>
<stop-on-errors>true</stop-on-errors>

1
persistence-modules/core-java-persistence/README.md
View File

@ -13,3 +13,4 @@
- [Returning the Generated Keys in JDBC](https://www.baeldung.com/jdbc-returning-generated-keys)
- [Loading JDBC Drivers](https://www.baeldung.com/java-jdbc-loading-drivers)
- [Difference Between Statement and PreparedStatement](https://www.baeldung.com/java-statement-preparedstatement)
- [Extracting Database Metadata Using JDBC](https://www.baeldung.com/jdbc-database-metadata)

2
persistence-modules/flyway-repair/README.MD
View File

@ -1 +1,3 @@
### Relevant Articles:
- [Flyway Repair With Spring Boot](https://www.baeldung.com/spring-boot-flyway-repair)

1
persistence-modules/hibernate5/README.md
View File

@ -13,3 +13,4 @@ This module contains articles about Hibernate 5. Let's not add more articles her
- [Guide to the Hibernate EntityManager](https://www.baeldung.com/hibernate-entitymanager)
- [Using c3p0 with Hibernate](https://www.baeldung.com/hibernate-c3p0)
- [Persist a JSON Object Using Hibernate](https://www.baeldung.com/hibernate-persist-json-object)
- [What Is the Hi/Lo Algorithm?](https://www.baeldung.com/hi-lo-algorithm-hibernate)

34
persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/hilo/RestaurantOrder.java Normal file
View File

@ -0,0 +1,34 @@
package com.baeldung.hibernate.hilo;
import org.hibernate.annotations.GenericGenerator;
import org.hibernate.annotations.Parameter;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class RestaurantOrder {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "hilo_sequence_generator")
@GenericGenerator(
name = "hilo_sequence_generator",
strategy = "sequence",
parameters = {
@Parameter(name = "sequence_name", value = "hilo_seqeunce"),
@Parameter(name = "initial_value", value = "1"),
@Parameter(name = "increment_size", value = "3"),
@Parameter(name = "optimizer", value = "hilo")
}
)
private Long id;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
}

99
persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/hilo/HibernateHiloUnitTest.java Normal file
View File

@ -0,0 +1,99 @@
package com.baeldung.hibernate.hilo;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.SessionFactoryBuilder;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.service.ServiceRegistry;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Properties;
import static org.junit.Assert.fail;
public class HibernateHiloUnitTest {
private Session session;
@Before
public void init() {
try {
configureLogger();
ServiceRegistry serviceRegistry = configureServiceRegistry();
SessionFactory factory = getSessionFactoryBuilder(serviceRegistry).build();
session = factory.openSession();
} catch (HibernateException | IOException e) {
fail("Failed to initiate Hibernate Session [Exception:" + e.toString() + "]");
}
}
private void configureLogger() {
BasicConfigurator.configure();
LogManager.getLogger("org.hibernate").setLevel(Level.ERROR);
LogManager.getLogger("org.hibernate.id.enhanced.SequenceStructure").setLevel(Level.DEBUG);
LogManager.getLogger("org.hibernate.event.internal.AbstractSaveEventListener").setLevel(Level.DEBUG);
LogManager.getLogger("org.hibernate.SQL").setLevel(Level.DEBUG);
}
private static SessionFactoryBuilder getSessionFactoryBuilder(ServiceRegistry serviceRegistry) {
MetadataSources metadataSources = new MetadataSources(serviceRegistry);
metadataSources.addAnnotatedClass(RestaurantOrder.class);
Metadata metadata = metadataSources.buildMetadata();
return metadata.getSessionFactoryBuilder();
}
private static ServiceRegistry configureServiceRegistry() throws IOException {
Properties properties = getProperties();
return new StandardServiceRegistryBuilder().applySettings(properties)
.build();
}
private static Properties getProperties() throws IOException {
Properties properties = new Properties();
URL propertiesURL = getPropertiesURL();
try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
properties.load(inputStream);
}
return properties;
}
private static URL getPropertiesURL() {
return Thread.currentThread()
.getContextClassLoader()
.getResource("hibernate-hilo.properties");
}
@Test
public void givenHiLoAlgorithm_when9EntitiesArePersisted_Then3callsToDBForNextValueShouldBeMade() {
Transaction transaction = session.beginTransaction();
for (int i = 0; i < 9; i++) {
session.persist(new RestaurantOrder());
session.flush();
}
transaction.commit();
}
@After
public void cleanup() {
session.close();
}
}

10
persistence-modules/hibernate5/src/test/resources/hibernate-hilo.properties Normal file
View File

@ -0,0 +1,10 @@
hibernate.connection.driver_class=org.h2.Driver
hibernate.connection.url=jdbc:h2:mem:hilo_db;DB_CLOSE_DELAY=-1
hibernate.connection.username=sa
hibernate.dialect=org.hibernate.dialect.H2Dialect
hibernate.show_sql=true
hibernate.hbm2ddl.auto=create-drop
hibernate.c3p0.min_size=5
hibernate.c3p0.max_size=20
hibernate.c3p0.acquire_increment=5
hibernate.c3p0.timeout=1800

4
persistence-modules/java-jpa-3/README.md
View File

@ -1,3 +1,7 @@
## JPA in Java
This module contains articles about the Java Persistence API (JPA) in Java.
### Relevant Articles:
- [JPA Entity Equality](https://www.baeldung.com/jpa-entity-equality)

2
persistence-modules/java-jpa-3/src/main/java/com/baeldung/jpa/equality/EqualByBusinessKey.java
View File

@ -44,7 +44,7 @@ public class EqualByBusinessKey {
return false;
}
if (obj instanceof EqualByBusinessKey) {
if (((EqualByBusinessKey) obj).getEmail() == getEmail()) {
if (((EqualByBusinessKey) obj).getEmail().equals(getEmail())) {
return true;
}
}

4
persistence-modules/pom.xml
View File

@ -19,12 +19,14 @@
<module>core-java-persistence</module>
<module>deltaspike</module>
<module>elasticsearch</module>
<module>flyway</module>
<module>flyway-repair</module>
<module>hbase</module>
<module>hibernate5</module>
<module>hibernate-mapping</module> <!-- long running -->
<module>hibernate-ogm</module>
<module>hibernate-annotations</module>
<module>hibernate-exceptions</module>
<module>hibernate-libraries</module>
<module>hibernate-jpa</module>
<module>hibernate-queries</module>
@ -53,6 +55,7 @@
<module>spring-boot-persistence-mongodb</module>
<module>spring-data-cassandra</module>
<module>spring-data-cassandra-reactive</module>
<module>spring-data-cosmosdb</module>
<module>spring-data-couchbase-2</module>
<module>spring-data-dynamodb</module>
<module>spring-data-eclipselink</module>
@ -78,6 +81,7 @@
<module>spring-hibernate-5</module> <!-- long running -->
<module>spring-hibernate4</module>
<module>spring-jpa</module>
<module>spring-jpa-2</module>
<!-- <module>spring-mybatis</module> --> <!-- needs fixing in BAEL-9021 -->
<module>spring-persistence-simple</module>
<module>spring-persistence-simple-2</module>

3
persistence-modules/spring-data-cosmosdb/README.md Normal file
View File

@ -0,0 +1,3 @@
### Relevant Articles:
- [Introduction to Spring Data Azure Cosmos DB](https://www.baeldung.com/spring-data-cosmos-db)

51
persistence-modules/spring-data-cosmosdb/pom.xml Normal file
View File

@ -0,0 +1,51 @@
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-data-cosmosdb</artifactId>
<name>spring-data-cosmos-db</name>
<description>tutorial for spring-data-cosmosdb</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<properties>
<java.version>1.8</java.version>
<cosmodb.version>2.3.0</cosmodb.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.microsoft.azure</groupId>
<artifactId>spring-data-cosmosdb</artifactId>
<version>${cosmodb.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

12
persistence-modules/spring-data-cosmosdb/src/main/java/com/baeldung/spring/data/cosmosdb/AzureCosmosDbApplication.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.spring.data.cosmosdb;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AzureCosmosDbApplication {
public static void main(String[] args) {
SpringApplication.run(AzureCosmosDbApplication.class, args);
}
}

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