BAEL-1065 Merged changes and resolved conflict in core-java/pom.xml. JMH benchmarks

.gitignore

@@ -42,3 +42,4 @@ spring-call-getters-using-reflection/.mvn/wrapper/maven-wrapper.properties
 
 spring-check-if-a-property-is-null/.mvn/wrapper/maven-wrapper.properties
 *.springBeans
+

algorithms/README.md

@@ -6,3 +6,5 @@
 - [Validating Input With Finite Automata in Java](http://www.baeldung.com/finite-automata-java)
 - [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)

algorithms/src/main/java/com/baeldung/algorithms/BinarySearch.java

@@ -0,0 +1,53 @@
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class BinarySearch {
+
+    public int runBinarySearchIteratively(int[] sortedArray, int key, int low, int high) {
+
+        int index = Integer.MAX_VALUE;
+
+        while (low <= high) {
+
+            int mid = (low + high) / 2;
+
+            if (sortedArray[mid] < key) {
+                low = mid + 1;
+            } else if (sortedArray[mid] > key) {
+                high = mid - 1;
+            } else if (sortedArray[mid] == key) {
+                index = mid;
+                break;
+            }
+        }
+        return index;
+    }
+
+    public int runBinarySearchRecursively(int[] sortedArray, int key, int low, int high) {
+
+        int middle = (low + high) / 2;
+        if (high < low) {
+            return -1;
+        }
+
+        if (key == sortedArray[middle]) {
+          return middle;
+        } else if (key < sortedArray[middle]) {
+          return runBinarySearchRecursively(sortedArray, key, low, middle - 1);
+        } else {
+          return runBinarySearchRecursively(sortedArray, key, middle + 1, high);
+        }
+    }
+
+    public int runBinarySearchUsingJavaArrays(int[] sortedArray, Integer key) {
+        int index = Arrays.binarySearch(sortedArray, key);
+        return index;
+    }
+
+    public int runBinarySearchUsingJavaCollections(List<Integer> sortedList, Integer key) {
+        int index = Collections.binarySearch(sortedList, key);
+        return index;
+    }
+
+}

algorithms/src/main/java/com/baeldung/algorithms/minimax/MiniMax.java

@@ -18,12 +18,12 @@ public class MiniMax {
         constructTree(root);
     }
 
-    private void constructTree(Node node) {
+    private void constructTree(Node parentNode) {
-        List<Integer> listofPossibleHeaps = GameOfBones.getPossibleStates(node.getNoOfBones());
+        List<Integer> listofPossibleHeaps = GameOfBones.getPossibleStates(parentNode.getNoOfBones());
-        boolean isMaxPlayer = !node.isMaxPlayer();
+        boolean isChildMaxPlayer = !parentNode.isMaxPlayer();
         listofPossibleHeaps.forEach(n -> {
-            Node newNode = new Node(n, isMaxPlayer);
+            Node newNode = new Node(n, isChildMaxPlayer);
-            node.addChild(newNode);
+            parentNode.addChild(newNode);
             if (newNode.getNoOfBones() > 0) {
                 constructTree(newNode);
             }

algorithms/src/main/java/com/baeldung/algorithms/string/search/StringSearchAlgorithms.java

@@ -0,0 +1,194 @@
+package com.baeldung.algorithms.string.search;
+
+import java.math.BigInteger;
+import java.util.Random;
+
+public class StringSearchAlgorithms {
+    public static long getBiggerPrime(int m) {
+        BigInteger prime = BigInteger.probablePrime(getNumberOfBits(m) + 1, new Random());
+        return prime.longValue();
+    }
+
+    public static long getLowerPrime(long number) {
+        BigInteger prime = BigInteger.probablePrime(getNumberOfBits(number) - 1, new Random());
+        return prime.longValue();
+    }
+
+    private static int getNumberOfBits(final int number) {
+        return Integer.SIZE - Integer.numberOfLeadingZeros(number);
+    }
+
+    private static int getNumberOfBits(final long number) {
+        return Long.SIZE - Long.numberOfLeadingZeros(number);
+    }
+
+    public static int simpleTextSearch(char[] pattern, char[] text) {
+        int patternSize = pattern.length;
+        int textSize = text.length;
+
+        int i = 0;
+
+        while ((i + patternSize) <= textSize) {
+            int j = 0;
+            while (text[i + j] == pattern[j]) {
+                j += 1;
+                if (j >= patternSize)
+                    return i;
+            }
+            i += 1;
+        }
+
+        return -1;
+    }
+
+    public static int RabinKarpMethod(char[] pattern, char[] text) {
+        int patternSize = pattern.length; // m
+        int textSize = text.length; // n
+
+        long prime = getBiggerPrime(patternSize);
+
+        long r = 1;
+        for (int i = 0; i < patternSize - 1; i++) {
+            r *= 2;
+            r = r % prime;
+        }
+
+        long[] t = new long[textSize];
+        t[0] = 0;
+
+        long pfinger = 0;
+
+        for (int j = 0; j < patternSize; j++) {
+            t[0] = (2 * t[0] + text[j]) % prime;
+            pfinger = (2 * pfinger + pattern[j]) % prime;
+        }
+
+        int i = 0;
+        boolean passed = false;
+
+        int diff = textSize - patternSize;
+        for (i = 0; i <= diff; i++) {
+            if (t[i] == pfinger) {
+                passed = true;
+                for (int k = 0; k < patternSize; k++) {
+                    if (text[i + k] != pattern[k]) {
+                        passed = false;
+                        break;
+                    }
+                }
+
+                if (passed) {
+                    return i;
+                }
+            }
+
+            if (i < diff) {
+                long value = 2 * (t[i] - r * text[i]) + text[i + patternSize];
+                t[i + 1] = ((value % prime) + prime) % prime;
+            }
+        }
+        return -1;
+
+    }
+
+    public static int KnuthMorrisPrattSearch(char[] pattern, char[] text) {
+        int patternSize = pattern.length; // m
+        int textSize = text.length; // n
+
+        int i = 0, j = 0;
+
+        int[] shift = KnuthMorrisPrattShift(pattern);
+
+        while ((i + patternSize) <= textSize) {
+            while (text[i + j] == pattern[j]) {
+                j += 1;
+                if (j >= patternSize)
+                    return i;
+            }
+
+            if (j > 0) {
+                i += shift[j - 1];
+                j = Math.max(j - shift[j - 1], 0);
+            } else {
+                i++;
+                j = 0;
+            }
+        }
+        return -1;
+    }
+
+    public static int[] KnuthMorrisPrattShift(char[] pattern) {
+        int patternSize = pattern.length;
+
+        int[] shift = new int[patternSize];
+        shift[0] = 1;
+
+        int i = 1, j = 0;
+
+        while ((i + j) < patternSize) {
+            if (pattern[i + j] == pattern[j]) {
+                shift[i + j] = i;
+                j++;
+            } else {
+                if (j == 0)
+                    shift[i] = i + 1;
+
+                if (j > 0) {
+                    i = i + shift[j - 1];
+                    j = Math.max(j - shift[j - 1], 0);
+                } else {
+                    i = i + 1;
+                    j = 0;
+                }
+            }
+        }
+        return shift;
+    }
+
+    public static int BoyerMooreHorspoolSimpleSearch(char[] pattern, char[] text) {
+        int patternSize = pattern.length;
+        int textSize = text.length;
+
+        int i = 0, j = 0;
+
+        while ((i + patternSize) <= textSize) {
+            j = patternSize - 1;
+            while (text[i + j] == pattern[j]) {
+                j--;
+                if (j < 0)
+                    return i;
+            }
+            i++;
+        }
+        return -1;
+    }
+
+    public static int BoyerMooreHorspoolSearch(char[] pattern, char[] text) {
+
+        int shift[] = new int[256];
+
+        for (int k = 0; k < 256; k++) {
+            shift[k] = pattern.length;
+        }
+
+        for (int k = 0; k < pattern.length - 1; k++) {
+            shift[pattern[k]] = pattern.length - 1 - k;
+        }
+
+        int i = 0, j = 0;
+
+        while ((i + pattern.length) <= text.length) {
+            j = pattern.length - 1;
+
+            while (text[i + j] == pattern[j]) {
+                j -= 1;
+                if (j < 0)
+                    return i;
+            }
+
+            i = i + shift[text[i + pattern.length - 1]];
+
+        }
+        return -1;
+    }
+}

algorithms/src/test/java/algorithms/BinarySearchTest.java

@@ -0,0 +1,41 @@
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+
+public class BinarySearchTest {
+
+    int[] sortedArray = { 0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9 };
+    int key = 6;
+    int expectedIndexForSearchKey = 7;
+    int low = 0;
+    int high = sortedArray.length - 1;
+    List<Integer> sortedList = Arrays.asList(0, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9);
+    
+    @Test
+    public void givenASortedArrayOfIntegers_whenBinarySearchRunIterativelyForANumber_thenGetIndexOfTheNumber() {
+        BinarySearch binSearch = new BinarySearch();
+        Assert.assertEquals(expectedIndexForSearchKey, binSearch.runBinarySearchIteratively(sortedArray, key, low, high));
+    }
+
+    @Test
+    public void givenASortedArrayOfIntegers_whenBinarySearchRunRecursivelyForANumber_thenGetIndexOfTheNumber() {
+        BinarySearch binSearch = new BinarySearch();
+        Assert.assertEquals(expectedIndexForSearchKey, binSearch.runBinarySearchRecursively(sortedArray, key, low, high));
+    }
+    
+    @Test
+    public void givenASortedArrayOfIntegers_whenBinarySearchRunUsingArraysClassStaticMethodForANumber_thenGetIndexOfTheNumber() {
+        BinarySearch binSearch = new BinarySearch();
+        Assert.assertEquals(expectedIndexForSearchKey, binSearch.runBinarySearchUsingJavaArrays(sortedArray, key));
+    }
+    
+    @Test
+    public void givenASortedListOfIntegers_whenBinarySearchRunUsingCollectionsClassStaticMethodForANumber_thenGetIndexOfTheNumber() {
+        BinarySearch binSearch = new BinarySearch();
+        Assert.assertEquals(expectedIndexForSearchKey, binSearch.runBinarySearchUsingJavaCollections(sortedList, key));
+    }
+    
+}

algorithms/src/test/java/algorithms/StringSearchAlgorithmsTest.java

@@ -0,0 +1,25 @@
+package algorithms;
+
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.baeldung.algorithms.string.search.StringSearchAlgorithms;
+
+public class StringSearchAlgorithmsTest {
+	
+	
+	@Test
+	public void testStringSearchAlgorithms(){
+		String text = "This is some nice text.";
+		String pattern = "some";
+		
+		int realPosition = text.indexOf(pattern);
+        Assert.assertTrue(realPosition == StringSearchAlgorithms.simpleTextSearch(pattern.toCharArray(), text.toCharArray()));
+        Assert.assertTrue(realPosition == StringSearchAlgorithms.RabinKarpMethod(pattern.toCharArray(), text.toCharArray()));
+        Assert.assertTrue(realPosition == StringSearchAlgorithms.KnuthMorrisPrattSearch(pattern.toCharArray(), text.toCharArray()));
+        Assert.assertTrue(realPosition == StringSearchAlgorithms.BoyerMooreHorspoolSimpleSearch(pattern.toCharArray(), text.toCharArray()));
+        Assert.assertTrue(realPosition == StringSearchAlgorithms.BoyerMooreHorspoolSearch(pattern.toCharArray(), text.toCharArray()));
+	}
+
+}

apache-shiro/.gitignore

@@ -0,0 +1,4 @@
+
+/.idea/
+/target/
+/apache-shiro.iml

apache-shiro/pom.xml

@@ -0,0 +1,78 @@
+<?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-shiro</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>1.5.2.RELEASE</version>
+    </parent>
+
+    <properties>
+        <apache-shiro-core-version>1.4.0</apache-shiro-core-version>
+        <log4j-version>1.2.17</log4j-version>
+        <slf4j-version>1.7.25</slf4j-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-freemarker</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.shiro</groupId>
+            <artifactId>shiro-spring-boot-web-starter</artifactId>
+            <version>${apache-shiro-core-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.shiro</groupId>
+            <artifactId>shiro-core</artifactId>
+            <version>${apache-shiro-core-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>jcl-over-slf4j</artifactId>
+            <version>${slf4j-version}</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-log4j12</artifactId>
+            <version>${slf4j-version}</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j-version}</version>
+            <scope>runtime</scope>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.6.2</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    
+</project>

apache-shiro/src/main/java/com/baeldung/Main.java

@@ -0,0 +1,85 @@
+package com.baeldung;
+
+import org.apache.shiro.SecurityUtils;
+import org.apache.shiro.authc.*;
+import org.apache.shiro.mgt.DefaultSecurityManager;
+import org.apache.shiro.mgt.SecurityManager;
+import org.apache.shiro.realm.Realm;
+import org.apache.shiro.realm.text.IniRealm;
+import org.apache.shiro.session.Session;
+import org.apache.shiro.subject.Subject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Main {
+
+    private static final transient Logger log = LoggerFactory.getLogger(Main.class);
+
+    public static void main(String[] args) {
+
+        Realm realm = new MyCustomRealm();
+        SecurityManager securityManager = new DefaultSecurityManager(realm);
+
+        SecurityUtils.setSecurityManager(securityManager);
+        Subject currentUser = SecurityUtils.getSubject();
+
+        if (!currentUser.isAuthenticated()) {
+          UsernamePasswordToken token 
+            = new UsernamePasswordToken("user", "password");
+          token.setRememberMe(true);
+          try {
+              currentUser.login(token);
+          } catch (UnknownAccountException uae) {
+              log.error("Username Not Found!", uae);
+          } catch (IncorrectCredentialsException ice) {
+              log.error("Invalid Credentials!", ice);
+          } catch (LockedAccountException lae) {
+              log.error("Your Account is Locked!", lae);
+          } catch (AuthenticationException ae) {
+              log.error("Unexpected Error!", ae);
+          }
+        }
+
+        log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
+
+        if (currentUser.hasRole("admin")) {
+            log.info("Welcome Admin");
+        } else if(currentUser.hasRole("editor")) {
+            log.info("Welcome, Editor!");
+        } else if(currentUser.hasRole("author")) {
+            log.info("Welcome, Author");
+        } else {
+            log.info("Welcome, Guest");
+        }
+
+        if(currentUser.isPermitted("articles:compose")) {
+            log.info("You can compose an article");
+        } else {
+            log.info("You are not permitted to compose an article!");
+        }
+
+        if(currentUser.isPermitted("articles:save")) {
+            log.info("You can save articles");
+        } else {
+            log.info("You can not save articles");
+        }
+
+        if(currentUser.isPermitted("articles:publish")) {
+            log.info("You can publish articles");
+        } else {
+            log.info("You can not publish articles");
+        }
+
+        Session session = currentUser.getSession();
+        session.setAttribute("key", "value");
+        String value = (String) session.getAttribute("key");
+        if (value.equals("value")) {
+            log.info("Retrieved the correct value! [" + value + "]");
+        }
+
+        currentUser.logout();
+
+        System.exit(0);
+    }
+
+}

apache-shiro/src/main/java/com/baeldung/MyCustomRealm.java

@@ -0,0 +1,102 @@
+package com.baeldung;
+
+import org.apache.shiro.authc.*;
+import org.apache.shiro.authz.AuthorizationInfo;
+import org.apache.shiro.authz.SimpleAuthorizationInfo;
+import org.apache.shiro.realm.jdbc.JdbcRealm;
+import org.apache.shiro.subject.PrincipalCollection;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.*;
+
+public class MyCustomRealm extends JdbcRealm {
+
+    private Map<String, String> credentials = new HashMap<>();
+    private Map<String, Set<String>> roles = new HashMap<>();
+    private Map<String, Set<String>> perm = new HashMap<>();
+
+    {
+      credentials.put("user", "password");
+      credentials.put("user2", "password2");
+      credentials.put("user3", "password3");
+
+      roles.put("user", new HashSet<>(Arrays.asList("admin")));
+      roles.put("user2", new HashSet<>(Arrays.asList("editor")));
+      roles.put("user3", new HashSet<>(Arrays.asList("author")));
+
+      perm.put("admin", new HashSet<>(Arrays.asList("*")));
+      perm.put("editor", new HashSet<>(Arrays.asList("articles:*")));
+      perm.put("author",
+        new HashSet<>(Arrays.asList("articles:compose",
+          "articles:save")));
+
+    }
+
+    @Override
+    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token)
+      throws AuthenticationException {
+
+        UsernamePasswordToken uToken = (UsernamePasswordToken) token;
+
+        if(uToken.getUsername() == null
+          || uToken.getUsername().isEmpty()
+          || !credentials.containsKey(uToken.getUsername())
+          ) {
+            throw new UnknownAccountException("username not found!");
+        }
+
+
+        return new SimpleAuthenticationInfo(
+          uToken.getUsername(), credentials.get(uToken.getUsername()),
+          getName());
+    }
+
+    @Override
+    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
+        Set<String> roleNames = new HashSet<>();
+        Set<String> permissions = new HashSet<>();
+
+        principals.forEach(p -> {
+            try {
+                Set<String> roles = getRoleNamesForUser(null, (String) p);
+                roleNames.addAll(roles);
+                permissions.addAll(getPermissions(null, null,roles));
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
+        });
+
+        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(roleNames);
+        info.setStringPermissions(permissions);
+        return info;
+    }
+
+    @Override
+    protected Set<String> getRoleNamesForUser(Connection conn, String username) throws SQLException {
+        if(!roles.containsKey(username)) {
+            throw new SQLException("username not found!");
+        }
+
+       return roles.get(username);
+    }
+
+    @Override
+    protected Set<String> getPermissions(Connection conn, String username, Collection<String> roleNames) throws SQLException {
+        for (String role : roleNames) {
+            if (!perm.containsKey(role)) {
+                throw new SQLException("role not found!");
+            }
+        }
+
+        Set<String> finalSet = new HashSet<>();
+        for (String role : roleNames) {
+            finalSet.addAll(perm.get(role));
+        }
+
+        return finalSet;
+    }
+
+}

apache-shiro/src/main/java/com/baeldung/ShiroSpringApplication.java

@@ -0,0 +1,45 @@
+package com.baeldung;
+
+import org.apache.shiro.realm.Realm;
+import org.apache.shiro.spring.web.config.DefaultShiroFilterChainDefinition;
+import org.apache.shiro.spring.web.config.ShiroFilterChainDefinition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * Created by smatt on 21/08/2017.
+ */
+@SpringBootApplication
+public class ShiroSpringApplication {
+
+    private static final transient Logger log = LoggerFactory.getLogger(ShiroSpringApplication.class);
+
+    public static void main(String... args) {
+        SpringApplication.run(ShiroSpringApplication.class, args);
+    }
+
+
+    @Bean
+    public Realm realm() {
+        return new MyCustomRealm();
+    }
+
+
+    @Bean
+    public ShiroFilterChainDefinition shiroFilterChainDefinition() {
+        DefaultShiroFilterChainDefinition filter
+          = new DefaultShiroFilterChainDefinition();
+
+        filter.addPathDefinition("/secure", "authc");
+        filter.addPathDefinition("/**", "anon");
+
+        return filter;
+    }
+
+
+
+
+}

apache-shiro/src/main/java/com/baeldung/controllers/ShiroSpringController.java

@@ -0,0 +1,105 @@
+package com.baeldung.controllers;
+
+import com.baeldung.models.UserCredentials;
+import org.apache.shiro.SecurityUtils;
+import org.apache.shiro.authc.AuthenticationException;
+import org.apache.shiro.authc.UsernamePasswordToken;
+import org.apache.shiro.subject.Subject;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Controller
+public class ShiroSpringController {
+
+
+
+    @GetMapping("/")
+    public String index() {
+       return "index";
+    }
+
+
+    @RequestMapping( value = "/login", method = {RequestMethod.GET, RequestMethod.POST})
+    public String login(HttpServletRequest req, UserCredentials cred, RedirectAttributes attr) {
+
+      if(req.getMethod().equals(RequestMethod.GET.toString())) {
+        return "login";
+      }
+      else {
+
+        Subject subject = SecurityUtils.getSubject();
+
+        if(!subject.isAuthenticated()) {
+          UsernamePasswordToken token = new UsernamePasswordToken(
+            cred.getUsername(), cred.getPassword(), cred.isRememberMe());
+          try {
+            subject.login(token);
+          } catch (AuthenticationException ae) {
+              ae.printStackTrace();
+              attr.addFlashAttribute("error", "Invalid Credentials");
+              return "redirect:/login";
+          }
+        }
+
+        return "redirect:/secure";
+      }
+    }
+
+
+    @GetMapping("/secure")
+    public String secure(ModelMap modelMap) {
+
+        Subject currentUser = SecurityUtils.getSubject();
+        String role = "", permission = "";
+
+        if(currentUser.hasRole("admin")) {
+            role = role  + "You are an Admin";
+        }
+        else if(currentUser.hasRole("editor")) {
+            role = role + "You are an Editor";
+        }
+        else if(currentUser.hasRole("author")) {
+            role = role + "You are an Author";
+        }
+
+        if(currentUser.isPermitted("articles:compose")) {
+            permission = permission + "You can compose an article, ";
+        } else {
+            permission = permission + "You are not permitted to compose an article!, ";
+        }
+
+        if(currentUser.isPermitted("articles:save")) {
+            permission = permission + "You can save articles, ";
+        } else {
+            permission = permission + "\nYou can not save articles, ";
+        }
+
+        if(currentUser.isPermitted("articles:publish")) {
+            permission = permission  + "\nYou can publish articles";
+        } else {
+            permission = permission + "\nYou can not publish articles";
+        }
+
+        modelMap.addAttribute("username", currentUser.getPrincipal());
+        modelMap.addAttribute("permission", permission);
+        modelMap.addAttribute("role", role);
+
+        return "secure";
+    }
+
+
+    @PostMapping("/logout")
+    public String logout() {
+       Subject subject = SecurityUtils.getSubject();
+       subject.logout();
+       return "redirect:/";
+    }
+
+}

apache-shiro/src/main/java/com/baeldung/models/UserCredentials.java

@@ -0,0 +1,40 @@
+package com.baeldung.models;
+
+public class UserCredentials {
+
+    private String username;
+    private String password;
+    private boolean rememberMe = false;
+
+    public UserCredentials() {}
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public boolean isRememberMe() {
+        return rememberMe;
+    }
+
+    public void setRememberMe(boolean rememberMe) {
+        this.rememberMe = rememberMe;
+    }
+
+    @Override
+    public String toString() {
+        return "username = " + getUsername()
+                + "\nrememberMe = " + isRememberMe();
+    }
+}

apache-shiro/src/main/resources/application.properties

@@ -0,0 +1,11 @@
+server.port=9000
+server.servlet-path=/
+server.context-path=/
+
+#shiro-spring-boot-config
+shiro.loginUrl = /login
+shiro.successUrl = /secure
+shiro.unauthorizedUrl = /login
+
+#freemarker
+spring.freemarker.suffix=.ftl

apache-shiro/src/main/resources/log4j.properties

@@ -0,0 +1,12 @@
+log4j.rootLogger=INFO, stdout
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n
+
+log4j.logger.org.apache=WARN
+
+log4j.logger.org.apache.shiro=INFO
+
+log4j.logger.org.apache.shiro.util.ThreadContext=WARN
+log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN

apache-shiro/src/main/resources/shiro.ini

@@ -0,0 +1,9 @@
+[users]
+user = password,admin
+user2 = password2,editor
+user3 = password3,author
+
+[roles]
+admin = *
+editor = articles:*
+author = articles:compose,articles:save

apache-shiro/src/main/resources/templates/index.ftl

@@ -0,0 +1,10 @@
+<html>
+<head>
+    <title>Index</title>
+</head>
+<body>
+    <h1>Welcome Guest!</h1>
+    <br>
+    <a href="/login">Login</a>
+</body>
+</html>

apache-shiro/src/main/resources/templates/login.ftl

@@ -0,0 +1,27 @@
+<html>
+<head>
+    <title>Login</title>
+</head>
+<body style="margin-left: 30px;">
+<h3>Login</h3>
+<br>
+<form action="/login" method="post">
+    <#if (error?length > 0)??>
+        <p style="color:darkred;">${error}</p>
+    <#else>
+    </#if>
+
+    <label for="username">Username</label>
+    <br>
+    <input type="text" name="username">
+    <br><br>
+    <label for="password">Password</label>
+    <br>
+    <input type="password" name="password">
+    <br><br>
+    <input type="checkbox" name="rememberMe"> Remember Me
+    <br><br>
+    <input type="submit" value="Submit">
+</form>
+</body>
+</html>

apache-shiro/src/main/resources/templates/secure.ftl

@@ -0,0 +1,15 @@
+<html>
+<head>
+    <title>Secure</title>
+</head>
+<body style="margin-left: 30px;">
+<h1>Welcome ${username}!</h1>
+<p><strong>Role</strong>: ${role}</p>
+<p><strong>Permissions</strong></p>
+<p>${permission}</p>
+<br>
+<form role="form" action="/logout" method="POST">
+   <input type="Submit" value="Logout" />
+</form>
+</body>
+</html>

apache-velocity/src/main/webapp/WEB-INF/velocity.properties

@@ -1,4 +1,4 @@
 resource.loader=webapp
 webapp.resource.loader.class=org.apache.velocity.tools.view.WebappResourceLoader
-webapp.resource.loader.path = .
+webapp.resource.loader.path = 
 webapp.resource.loader.cache = true

asciidoctor/README.md

@@ -1,3 +1,4 @@
 ### Relevant articles
 
-- [Introduction to Asciidoctor](http://www.baeldung.com/introduction-to-asciidoctor)
+- [Introduction to Asciidoctor](http://www.baeldung.com/introduction-to-asciidoctor)
+- [Generating a Book with Asciidoctor](http://www.baeldung.com/asciidoctor-book)

asciidoctor/pom.xml

@@ -35,7 +35,12 @@
                 <configuration>
                     <sourceDirectory>src/docs/asciidoc</sourceDirectory>
                     <outputDirectory>target/docs/asciidoc</outputDirectory>
+                    <attributes>
+                        <pdf-stylesdir>${project.basedir}/src/themes</pdf-stylesdir>
+                        <pdf-style>custom</pdf-style>
+                    </attributes>
                     <backend>pdf</backend>
+                    <doctype>book</doctype>
                 </configuration>
             </plugin>
         </plugins>

asciidoctor/src/docs/asciidoc/test.adoc

@@ -1,3 +1,13 @@
-== Introduction Section
+:icons: font
 
-Hi. I'm a simple test to see if this Maven build is working. If you see me in a nice PDF, then it means everything is [red]#working#.
+
+= Generating book with AsciiDoctorj
+Baeldung
+
+[abstract]
+This is the actual content.
+
+== First Section
+
+This is first section of the book where you can include some nice icons like icon:comment[].
+You can also create http://www.baeldung.com[links]

asciidoctor/src/themes/custom-theme.yml

@@ -0,0 +1,29 @@
+title_page:
+  align: left
+
+page:
+  layout: portrait
+  margin: [0.75in, 1in, 0.75in, 1in]
+  size: A4
+base:
+  font_color: #333333
+  line_height_length: 17
+  line_height: $base_line_height_length / $base_font_size
+link:
+  font_color: #009900
+
+header:
+  height: 0.5in
+  line_height: 1
+  recto_content:
+    center: '{document-title}'
+  verso_content:
+    center: '{document-title}'
+
+footer:
+  height: 0.5in
+  line_height: 1
+  recto_content:
+    right: '{chapter-title} | *{page-number}*'
+  verso_content:
+    left: '*{page-number}* | {chapter-title}'

aws/pom.xml

@@ -18,9 +18,41 @@
         <aws-lambda-java-events.version>1.3.0</aws-lambda-java-events.version>
         <aws-lambda-java-core.version>1.1.0</aws-lambda-java-core.version>
         <gson.version>2.8.0</gson.version>
+        <aws-java-sdk.version>1.11.154</aws-java-sdk.version>
+        <junit.version>4.12</junit.version>
+        <mockito-core.version>2.8.9</mockito-core.version>
+        <assertj-core.version>3.8.0</assertj-core.version>
     </properties>
 
     <dependencies>
+    
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>aws-java-sdk</artifactId>
+            <version>${aws-java-sdk.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+    
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-core</artifactId>

aws/src/main/java/com/baeldung/s3/AWSS3Service.java

@@ -0,0 +1,87 @@
+package com.baeldung.s3;
+
+import java.io.File;
+import java.util.List;
+
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.model.Bucket;
+import com.amazonaws.services.s3.model.CopyObjectResult;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.DeleteObjectsResult;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.PutObjectResult;
+import com.amazonaws.services.s3.model.S3Object;
+
+public class AWSS3Service {
+    private final AmazonS3 s3client;
+
+    public AWSS3Service() { 
+        this(new AmazonS3Client() {
+        }); 
+    } 
+    
+    public AWSS3Service(AmazonS3 s3client) {
+        this.s3client = s3client;
+    }
+    
+    //is bucket exist?
+    public boolean doesBucketExist(String bucketName) { 
+        return s3client.doesBucketExist(bucketName); 
+    } 
+    
+    //create a bucket
+    public Bucket createBucket(String bucketName) { 
+        return s3client.createBucket(bucketName); 
+    } 
+
+    //list all buckets
+    public List<Bucket> listBuckets() { 
+        return s3client.listBuckets(); 
+    }
+
+    //delete a bucket
+    public void deleteBucket(String bucketName) { 
+        s3client.deleteBucket(bucketName); 
+    }  
+    
+    //uploading object
+    public PutObjectResult putObject(String bucketName, String key, File file) {
+        return s3client.putObject(bucketName, key, file);
+    }
+    
+    //listing objects
+    public ObjectListing listObjects(String bucketName) {
+        return s3client.listObjects(bucketName);
+    }
+    
+    //get an object
+    public S3Object getObject(String bucketName, String objectKey) {
+        return s3client.getObject(bucketName, objectKey);
+    } 
+    
+    //copying an object
+    public CopyObjectResult copyObject(
+      String sourceBucketName,
+      String sourceKey,
+      String destinationBucketName,
+      String destinationKey
+    ) {
+        return s3client.copyObject(
+          sourceBucketName, 
+          sourceKey, 
+          destinationBucketName, 
+          destinationKey
+        );
+    }
+    
+    //deleting an object
+    public void deleteObject(String bucketName, String objectKey) {
+        s3client.deleteObject(bucketName, objectKey);
+    }
+    
+    //deleting multiple Objects
+    public DeleteObjectsResult deleteObjects(DeleteObjectsRequest delObjReq) {
+        return s3client.deleteObjects(delObjReq);
+    }
+}

aws/src/main/java/com/baeldung/s3/S3Application.java

@@ -0,0 +1,101 @@
+package com.baeldung.s3;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.commons.io.FileUtils;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+import com.amazonaws.services.s3.model.Bucket;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.S3Object;
+import com.amazonaws.services.s3.model.S3ObjectInputStream;
+import com.amazonaws.services.s3.model.S3ObjectSummary;
+
+public class S3Application {
+
+    private static final AWSCredentials credentials;
+    private static String bucketName;  
+
+    static {
+        //put your accesskey and secretkey here
+        credentials = new BasicAWSCredentials(
+          "<AWS accesskey>", 
+          "<AWS secretkey>"
+        );
+    }
+    
+    public static void main(String[] args) throws IOException {
+        //set-up the client
+        AmazonS3 s3client = AmazonS3ClientBuilder
+          .standard()
+          .withCredentials(new AWSStaticCredentialsProvider(credentials))
+          .withRegion(Regions.US_EAST_2)
+          .build();
+        
+        AWSS3Service awsService = new AWSS3Service(s3client);
+
+        bucketName = "baeldung-bucket";
+
+        //creating a bucket
+        if(awsService.doesBucketExist(bucketName)) {
+            System.out.println("Bucket name is not available."
+              + " Try again with a different Bucket name.");
+            return;
+        }
+        awsService.createBucket(bucketName);
+        
+        //list all the buckets
+        for(Bucket s : awsService.listBuckets() ) {
+            System.out.println(s.getName());
+        }
+        
+        //deleting bucket
+        awsService.deleteBucket("baeldung-bucket-test2");
+        
+        //uploading object
+        awsService.putObject(
+          bucketName, 
+          "Document/hello.txt",
+          new File("/Users/user/Document/hello.txt")
+        );
+
+        //listing objects
+        ObjectListing objectListing = awsService.listObjects(bucketName);
+        for(S3ObjectSummary os : objectListing.getObjectSummaries()) {
+            System.out.println(os.getKey());
+        }
+
+        //downloading an object
+        S3Object s3object = awsService.getObject(bucketName, "Document/hello.txt");
+        S3ObjectInputStream inputStream = s3object.getObjectContent();
+        FileUtils.copyInputStreamToFile(inputStream, new File("/Users/user/Desktop/hello.txt"));
+        
+        //copying an object
+        awsService.copyObject(
+          "baeldung-bucket", 
+          "picture/pic.png", 
+          "baeldung-bucket2", 
+          "Document/picture.png"
+        );
+        
+        //deleting an object
+        awsService.deleteObject(bucketName, "Document/hello.txt");
+
+        //deleting multiple objects
+        String objkeyArr[] = {
+          "Document/hello2.txt", 
+          "Document/picture.png"
+        };
+        
+        DeleteObjectsRequest delObjReq = new DeleteObjectsRequest("baeldung-bucket")
+          .withKeys(objkeyArr);
+        awsService.deleteObjects(delObjReq);
+    }
+}

aws/src/test/java/com/baeldung/s3/AWSS3ServiceIntegrationTest.java

@@ -0,0 +1,113 @@
+package com.baeldung.s3;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.model.CopyObjectResult;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.DeleteObjectsResult;
+import com.amazonaws.services.s3.model.PutObjectResult; 
+
+public class AWSS3ServiceIntegrationTest {
+
+    private static final String BUCKET_NAME = "bucket_name"; 
+    private static final String KEY_NAME = "key_name"; 
+    private static final String BUCKET_NAME2 = "bucket_name2"; 
+    private static final String KEY_NAME2 = "key_name2"; 
+ 
+    private AmazonS3 s3; 
+    private AWSS3Service service; 
+ 
+    @Before 
+    public void setUp() { 
+        s3 = mock(AmazonS3.class); 
+        service = new AWSS3Service(s3); 
+    } 
+ 
+    @Test 
+    public void whenInitializingAWSS3Service_thenNotNull() { 
+        assertThat(new AWSS3Service()).isNotNull(); 
+    } 
+    
+    @Test 
+    public void whenVerifyingIfS3BucketExist_thenCorrect() { 
+        service.doesBucketExist(BUCKET_NAME); 
+        verify(s3).doesBucketExist(BUCKET_NAME); 
+    } 
+ 
+    @Test 
+    public void whenVerifyingCreationOfS3Bucket_thenCorrect() { 
+        service.createBucket(BUCKET_NAME); 
+        verify(s3).createBucket(BUCKET_NAME); 
+    } 
+ 
+    @Test 
+    public void whenVerifyingListBuckets_thenCorrect() { 
+        service.listBuckets(); 
+        verify(s3).listBuckets(); 
+    } 
+
+    @Test 
+    public void whenDeletingBucket_thenCorrect() { 
+        service.deleteBucket(BUCKET_NAME); 
+        verify(s3).deleteBucket(BUCKET_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingPutObject_thenCorrect() { 
+        File file = mock(File.class); 
+        PutObjectResult result = mock(PutObjectResult.class); 
+        when(s3.putObject(anyString(), anyString(), (File) any())).thenReturn(result); 
+ 
+        assertThat(service.putObject(BUCKET_NAME, KEY_NAME, file)).isEqualTo(result); 
+        verify(s3).putObject(BUCKET_NAME, KEY_NAME, file); 
+    }
+    
+    @Test 
+    public void whenVerifyingListObjects_thenCorrect() { 
+        service.listObjects(BUCKET_NAME); 
+        verify(s3).listObjects(BUCKET_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingGetObject_thenCorrect() { 
+        service.getObject(BUCKET_NAME, KEY_NAME); 
+        verify(s3).getObject(BUCKET_NAME, KEY_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingCopyObject_thenCorrect() { 
+        CopyObjectResult result = mock(CopyObjectResult.class); 
+        when(s3.copyObject(anyString(), anyString(), anyString(), anyString())).thenReturn(result); 
+ 
+        assertThat(service.copyObject(BUCKET_NAME, KEY_NAME, BUCKET_NAME2, KEY_NAME2)).isEqualTo(result); 
+        verify(s3).copyObject(BUCKET_NAME, KEY_NAME, BUCKET_NAME2, KEY_NAME2);
+    } 
+    
+    @Test 
+    public void whenVerifyingDeleteObject_thenCorrect() { 
+        service.deleteObject(BUCKET_NAME, KEY_NAME); 
+        verify(s3).deleteObject(BUCKET_NAME, KEY_NAME); 
+    }
+    
+    @Test 
+    public void whenVerifyingDeleteObjects_thenCorrect() { 
+        DeleteObjectsRequest request = mock(DeleteObjectsRequest.class);
+        DeleteObjectsResult result = mock(DeleteObjectsResult.class);
+        when(s3.deleteObjects((DeleteObjectsRequest)any())).thenReturn(result); 
+        
+        assertThat(service.deleteObjects(request)).isEqualTo(result);
+        verify(s3).deleteObjects(request); 
+    }
+    
+}

bootique/config.yml

@@ -0,0 +1,11 @@
+log:
+  level: warn
+  appenders:
+    - type: file
+      logFormat: '%c{20}: %m%n'
+      file: /home/logger.log
+
+jetty:
+  context: /hello
+  connector:
+    port: 10001

bootique/dependency-reduced-pom.xml

@@ -0,0 +1,50 @@
+<?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">
+  <parent>
+    <artifactId>bootique-parent</artifactId>
+    <groupId>io.bootique.parent</groupId>
+    <version>0.12</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.baeldung.bootique</groupId>
+  <artifactId>bootique</artifactId>
+  <name>bootique</name>
+  <version>1.0-SNAPSHOT</version>
+  <url>http://maven.apache.org</url>
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-shade-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+    <dependency>
+      <groupId>io.bootique</groupId>
+      <artifactId>bootique-test</artifactId>
+      <version>0.23</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>io.bootique.bom</groupId>
+        <artifactId>bootique-bom</artifactId>
+        <version>0.23</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+  <properties>
+    <main.class>com.baeldung.bootique.App</main.class>
+  </properties>
+</project>
+

bootique/pom.xml

@@ -0,0 +1,66 @@
+<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>
+	<groupId>com.baeldung.bootique</groupId>
+	<artifactId>bootique</artifactId>
+	<packaging>jar</packaging>
+	<version>1.0-SNAPSHOT</version>
+	<name>bootique</name>
+	<url>http://maven.apache.org</url>
+
+	<properties>
+		<main.class>com.baeldung.bootique.App</main.class>
+	</properties>
+
+	<parent>
+		<groupId>io.bootique.parent</groupId>
+		<artifactId>bootique-parent</artifactId>
+		<version>0.12</version>
+	</parent>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>io.bootique.bom</groupId>
+				<artifactId>bootique-bom</artifactId>
+				<version>0.23</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<dependencies>
+		<dependency>
+			<groupId>io.bootique.jersey</groupId>
+			<artifactId>bootique-jersey</artifactId>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>io.bootique.logback</groupId>
+			<artifactId>bootique-logback</artifactId>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>io.bootique</groupId>
+			<artifactId>bootique-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-shade-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

bootique/src/main/java/com/baeldung/bootique/App.java

@@ -0,0 +1,41 @@
+package com.baeldung.bootique;
+
+import com.baeldung.bootique.module.ModuleBinder;
+import com.baeldung.bootique.router.IndexController;
+import com.baeldung.bootique.router.SaveController;
+import com.google.inject.Module;
+import io.bootique.Bootique;
+import io.bootique.jersey.JerseyModule;
+import io.bootique.log.BootLogger;
+
+import java.util.function.Supplier;
+
+public class App {
+
+    public static void main(String[] args) {
+        Module module = binder -> JerseyModule.extend(binder).addResource(IndexController.class)
+          .addResource(SaveController.class);
+        Bootique.app(args).module(module).module(ModuleBinder.class).bootLogger(new BootLogger() {
+            @Override
+            public void trace(Supplier<String> arg0) {
+                // ...
+            }
+
+            @Override
+            public void stdout(String arg0) {
+                // ...
+            }
+
+            @Override
+            public void stderr(String arg0, Throwable arg1) {
+                // ...
+            }
+
+            @Override
+            public void stderr(String arg0) {
+                // ...
+            }
+        }).autoLoadModules().exec();
+    }
+
+}

bootique/src/main/java/com/baeldung/bootique/module/ModuleBinder.java

@@ -0,0 +1,15 @@
+package com.baeldung.bootique.module;
+
+import com.baeldung.bootique.service.HelloService;
+import com.baeldung.bootique.service.impl.HelloServiceImpl;
+import com.google.inject.Binder;
+import com.google.inject.Module;
+
+public class ModuleBinder implements Module {
+
+    @Override
+    public void configure(Binder binder) {
+        binder.bind(HelloService.class).to(HelloServiceImpl.class);
+    }
+
+}

bootique/src/main/java/com/baeldung/bootique/module/ModuleProvider.java

@@ -0,0 +1,13 @@
+package com.baeldung.bootique.module;
+
+import com.google.inject.Module;
+import io.bootique.BQModuleProvider;
+
+public class ModuleProvider implements BQModuleProvider {
+
+    @Override
+    public Module module() {
+        return new ModuleBinder();
+    }
+
+}

bootique/src/main/java/com/baeldung/bootique/router/IndexController.java

@@ -0,0 +1,14 @@
+package com.baeldung.bootique.router;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+
+@Path("/")
+public class IndexController {
+
+    @GET
+    public String index() {
+        return "Hello, baeldung!";
+    }
+
+}

bootique/src/main/java/com/baeldung/bootique/router/SaveController.java

@@ -0,0 +1,20 @@
+package com.baeldung.bootique.router;
+
+import com.baeldung.bootique.service.HelloService;
+import com.google.inject.Inject;
+
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+
+@Path("/save")
+public class SaveController {
+
+    @Inject
+    HelloService helloService;
+
+    @POST
+    public String save() {
+        return "Data Saved!";
+    }
+
+}

bootique/src/main/java/com/baeldung/bootique/service/HelloService.java

@@ -0,0 +1,7 @@
+package com.baeldung.bootique.service;
+
+public interface HelloService {
+
+	boolean save();
+
+}

bootique/src/main/java/com/baeldung/bootique/service/impl/HelloServiceImpl.java

@@ -0,0 +1,12 @@
+package com.baeldung.bootique.service.impl;
+
+import com.baeldung.bootique.service.HelloService;
+
+public class HelloServiceImpl implements HelloService {
+
+	@Override
+	public boolean save() {
+		return true;
+	}
+
+}

bootique/src/main/resources/META-INF/services/io.bootique.BQModuleProvider

@@ -0,0 +1 @@
+com.baeldung.bootique.module.ModuleProvider

bootique/src/test/java/com/baeldung/bootique/AppTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.bootique;
+
+import com.baeldung.bootique.service.HelloService;
+import io.bootique.BQRuntime;
+import io.bootique.test.junit.BQDaemonTestFactory;
+import io.bootique.test.junit.BQTestFactory;
+import org.junit.Rule;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class AppTest {
+
+    @Rule
+    public BQTestFactory bqTestFactory = new BQTestFactory();
+
+    @Rule
+    public BQDaemonTestFactory bqDaemonTestFactory = new BQDaemonTestFactory();
+
+    @Test
+    public void givenService_expectBoolen() {
+        BQRuntime runtime = bqTestFactory.app("--server").autoLoadModules().createRuntime();
+        HelloService service = runtime.getInstance(HelloService.class);
+        assertEquals(true, service.save());
+    }
+
+}

camel-api/src/main/java/com/baeldung/camel/Application.java

@@ -13,14 +13,13 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.web.servlet.ServletRegistrationBean;
-import org.springframework.boot.web.support.SpringBootServletInitializer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.stereotype.Component;
 
 @SpringBootApplication
 @ComponentScan(basePackages="com.baeldung.camel")
-public class Application extends SpringBootServletInitializer {
+public class Application{
 
     @Value("${server.port}")
     String serverPort;
@@ -62,10 +61,12 @@ public class Application extends SpringBootServletInitializer {
                 .bindingMode(RestBindingMode.json)
                 .dataFormatProperty("prettyPrint", "true");
 /** 
-The Rest DSL supports automatic binding json/xml contents to/from POJOs using Camels Data Format.
+The Rest DSL supports automatic binding json/xml contents to/from 
-By default the binding mode is off, meaning there is no automatic binding happening for incoming and outgoing messages.
+POJOs using Camels Data Format.
-You may want to use binding if you develop POJOs that maps to your REST services request and response types. 
+By default the binding mode is off, meaning there is no automatic 
-This allows you, as a developer, to work with the POJOs in Java code.
+binding happening for incoming and outgoing messages.
+You may want to use binding if you develop POJOs that maps to 
+your REST services request and response types. 
 */         
             
             rest("/api/").description("Teste REST Service")

core-java-8/.gitignore

@@ -0,0 +1,26 @@
+*.class
+
+0.*
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+.resourceCache
+
+# Packaged files #
+*.jar
+*.war
+*.ear
+
+# Files generated by integration tests
+*.txt
+backup-pom.xml
+/bin/
+/temp
+
+#IntelliJ specific
+.idea/
+*.iml

core-java-8/README.md

@@ -0,0 +1,32 @@
+=========
+
+## Core Java 8 Cookbooks and Examples
+
+### Relevant Articles: 
+- [Java 8 Collectors](http://www.baeldung.com/java-8-collectors)
+- [Guide to Java 8’s Functional Interfaces](http://www.baeldung.com/java-8-functional-interfaces)
+- [Java 8 – Powerful Comparison with Lambdas](http://www.baeldung.com/java-8-sort-lambda)
+- [Java 8 New Features](http://www.baeldung.com/java-8-new-features)
+- [Lambda Expressions and Functional Interfaces: Tips and Best Practices](http://www.baeldung.com/java-8-lambda-expressions-tips)
+- [The Double Colon Operator in Java 8](http://www.baeldung.com/java-8-double-colon-operator)
+- [Java 8 Streams Advanced](http://www.baeldung.com/java-8-streams)
+- [Introduction to Java 8 Streams](http://www.baeldung.com/java-8-streams-introduction)
+- [Guide to Java 8 groupingBy Collector](http://www.baeldung.com/java-groupingby-collector)
+- [Strategy Design Pattern in Java 8](http://www.baeldung.com/java-strategy-pattern)
+- [Java 8 and Infinite Streams](http://www.baeldung.com/java-inifinite-streams)
+- [String Operations with Java Streams](http://www.baeldung.com/java-stream-operations-on-strings)
+- [Exceptions in Java 8 Lambda Expressions](http://www.baeldung.com/java-lambda-exceptions)
+- [Java 8 Stream findFirst() vs. findAny()](http://www.baeldung.com/java-stream-findfirst-vs-findany)
+- [Guide to Java 8 Comparator.comparing()](http://www.baeldung.com/java-8-comparator-comparing)
+- [How to Get the Last Element of a Stream in Java?](http://www.baeldung.com/java-stream-last-element)
+- [Introduction to the Java 8 Date/Time API](http://www.baeldung.com/java-8-date-time-intro)
+- [Migrating to the New Java 8 Date Time API](http://www.baeldung.com/migrating-to-java-8-date-time-api)
+- [Guide To Java 8 Optional](http://www.baeldung.com/java-optional)
+- [Guide to the Java 8 forEach](http://www.baeldung.com/foreach-java)
+- [Get the Current Date, Time and Timestamp in Java 8](http://www.baeldung.com/current-date-time-and-timestamp-in-java-8)
+- [TemporalAdjuster in Java](http://www.baeldung.com/java-temporal-adjuster)
+- [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
+- [Java Base64 Encoding and Decoding](http://www.baeldung.com/java-base64-encode-and-decode)
+- [The Difference Between map() and flatMap()](http://www.baeldung.com/java-difference-map-and-flatmap)
+
+- [Merging Streams in Java](http://www.baeldung.com/java-merge-streams)

core-java-8/pom.xml

@@ -0,0 +1,258 @@
+<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>core-java-8</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>core-java-8</name>
+
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+
+        <!-- utils -->
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-collections4</artifactId>
+            <version>${commons-collections4.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-math3</artifactId>
+            <version>${commons-math3.version}</version>
+        </dependency>
+
+       <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>        
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        
+        <!-- test scoped -->
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.jayway.awaitility</groupId>
+            <artifactId>awaitility</artifactId>
+            <version>${avaitility.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <finalName>core-java-8</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>copy-dependencies</id>
+                        <phase>prepare-package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}/libs</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <classpathPrefix>libs/</classpathPrefix>
+                            <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <configuration>
+                            <archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
+                            <archive>
+                                <manifest>
+                                    <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
+                                </manifest>
+                            </archive>
+                            <descriptorRefs>
+                                <descriptorRef>jar-with-dependencies</descriptorRef>
+                            </descriptorRefs>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <shadedArtifactAttached>true</shadedArtifactAttached>
+                            <transformers>
+                                <transformer
+                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>com.jolira</groupId>
+                <artifactId>onejar-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <configuration>
+                            <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
+                            <attachToBuild>true</attachToBuild>
+                            <filename>${project.build.finalName}-onejar.${project.packaging}</filename>
+                        </configuration>
+                        <goals>
+                            <goal>one-jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                        <configuration>
+                            <classifier>spring-boot</classifier>
+                            <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+
+    </build>
+
+    <profiles>
+        <profile>
+            <id>integration</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <phase>integration-test</phase>
+                                <goals>
+                                    <goal>test</goal>
+                                </goals>
+                                <configuration>
+                                    <excludes>
+                                        <exclude>**/*ManualTest.java</exclude>
+                                    </excludes>
+                                    <includes>
+                                        <include>**/*IntegrationTest.java</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <systemPropertyVariables>
+                                <test.mime>json</test.mime>
+                            </systemPropertyVariables>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+    
+    <properties>
+
+        <!-- util -->
+        <guava.version>21.0</guava.version>
+        <commons-lang3.version>3.5</commons-lang3.version>
+        <commons-math3.version>3.6.1</commons-math3.version>
+        <commons-io.version>2.5</commons-io.version>
+        <commons-collections4.version>4.1</commons-collections4.version>
+        <collections-generic.version>4.01</collections-generic.version>
+        <commons-codec.version>1.10</commons-codec.version>
+        <lombok.version>1.16.12</lombok.version>
+
+        <!-- testing -->
+        <assertj.version>3.6.1</assertj.version>
+        <avaitility.version>1.7.0</avaitility.version>
+
+    </properties>
+</project>

core-java-8/src/main/java/com/baeldung/AdderImpl.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 import java.util.function.Consumer;
 import java.util.function.Function;
 

core-java-8/src/main/java/com/baeldung/Bar.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 @FunctionalInterface
 public interface Bar {
 

core-java-8/src/main/java/com/baeldung/Baz.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 @FunctionalInterface
 public interface Baz {
 

core-java-8/src/main/java/com/baeldung/Foo.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 @FunctionalInterface
 public interface Foo {
 

core-java-8/src/main/java/com/baeldung/FooExtended.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 @FunctionalInterface
 public interface FooExtended extends Baz, Bar {
 

core-java-8/src/main/java/com/baeldung/UseFoo.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+
 import java.util.function.Function;
 
 public class UseFoo {

core-java-8/src/main/java/com/baeldung/datetime/UseLocalDateTime.java

@@ -0,0 +1,11 @@
+package com.baeldung.datetime;
+
+import java.time.LocalDateTime;
+
+public class UseLocalDateTime {
+
+    public LocalDateTime getLocalDateTimeUsingParseMethod(String representation) {
+        return LocalDateTime.parse(representation);
+    }
+
+}

core-java-8/src/main/java/com/baeldung/stream/InfiniteStreams.java

@@ -1,6 +1,5 @@
 package com.baeldung.stream;
 
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

core-java-8/src/main/java/com/baeldung/temporaladjuster/CustomTemporalAdjuster.java

@@ -0,0 +1,22 @@
+package com.baeldung.temporaladjuster;
+
+import java.time.DayOfWeek;
+import java.time.temporal.ChronoField;
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.Temporal;
+import java.time.temporal.TemporalAdjuster;
+
+public class CustomTemporalAdjuster implements TemporalAdjuster {
+
+    @Override
+    public Temporal adjustInto(Temporal temporal) {
+        switch (DayOfWeek.of(temporal.get(ChronoField.DAY_OF_WEEK))) {
+        case FRIDAY:
+            return temporal.plus(3, ChronoUnit.DAYS);
+        case SATURDAY:
+            return temporal.plus(2, ChronoUnit.DAYS);
+        default:
+            return temporal.plus(1, ChronoUnit.DAYS);
+        }
+    }
+}

core-java-8/src/test/java/com/baeldung/datetime/UseLocalDateTimeUnitTest.java

@@ -15,7 +15,9 @@ public class UseLocalDateTimeUnitTest {
 
     @Test
     public void givenString_whenUsingParse_thenLocalDateTime() {
-        assertEquals(LocalDate.of(2016, Month.MAY, 10), useLocalDateTime.getLocalDateTimeUsingParseMethod("2016-05-10T06:30").toLocalDate());
+        assertEquals(LocalDate.of(2016, Month.MAY, 10), useLocalDateTime.getLocalDateTimeUsingParseMethod("2016-05-10T06:30")
-        assertEquals(LocalTime.of(6, 30), useLocalDateTime.getLocalDateTimeUsingParseMethod("2016-05-10T06:30").toLocalTime());
+            .toLocalDate());
+        assertEquals(LocalTime.of(6, 30), useLocalDateTime.getLocalDateTimeUsingParseMethod("2016-05-10T06:30")
+            .toLocalTime());
     }
 }

core-java-8/src/test/java/com/baeldung/datetime/UseLocalDateUnitTest.java

@@ -15,12 +15,14 @@ public class UseLocalDateUnitTest {
 
     @Test
     public void givenValues_whenUsingFactoryOf_thenLocalDate() {
-        assertEquals("2016-05-10", useLocalDate.getLocalDateUsingFactoryOfMethod(2016, 5, 10).toString());
+        assertEquals("2016-05-10", useLocalDate.getLocalDateUsingFactoryOfMethod(2016, 5, 10)
+            .toString());
     }
 
     @Test
     public void givenString_whenUsingParse_thenLocalDate() {
-        assertEquals("2016-05-10", useLocalDate.getLocalDateUsingParseMethod("2016-05-10").toString());
+        assertEquals("2016-05-10", useLocalDate.getLocalDateUsingParseMethod("2016-05-10")
+            .toString());
     }
 
     @Test
@@ -30,12 +32,14 @@ public class UseLocalDateUnitTest {
 
     @Test
     public void givenDate_whenUsingPlus_thenNextDay() {
-        assertEquals(LocalDate.now().plusDays(1), useLocalDate.getNextDay(LocalDate.now()));
+        assertEquals(LocalDate.now()
+            .plusDays(1), useLocalDate.getNextDay(LocalDate.now()));
     }
 
     @Test
     public void givenDate_whenUsingMinus_thenPreviousDay() {
-        assertEquals(LocalDate.now().minusDays(1), useLocalDate.getPreviousDay(LocalDate.now()));
+        assertEquals(LocalDate.now()
+            .minusDays(1), useLocalDate.getPreviousDay(LocalDate.now()));
     }
 
     @Test
@@ -45,7 +49,8 @@ public class UseLocalDateUnitTest {
 
     @Test
     public void givenToday_whenUsingWithTemporalAdjuster_thenFirstDayOfMonth() {
-        assertEquals(1, useLocalDate.getFirstDayOfMonth().getDayOfMonth());
+        assertEquals(1, useLocalDate.getFirstDayOfMonth()
+            .getDayOfMonth());
     }
 
     @Test