Merge branch 'master' of https://github.com/eugenp/tutorials

core-java-modules/core-java-concurrency-advanced-3/src/test/java/com/baeldung/workstealing/PrimeNumbersUnitManualTest.java

@@ -15,7 +15,7 @@ import java.util.logging.Logger;
 
 import static org.junit.Assert.fail;
 
-public class PrimeNumbersUnitTest {
+public class PrimeNumbersUnitManualTest {
 
     private static Logger logger = Logger.getAnonymousLogger();
 

core-java-modules/core-java-security-2/pom.xml

@@ -0,0 +1,17 @@
+<?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>
+    <artifactId>core-java-security-2</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>core-java-security-2</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+</project>

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/ConsoleCallbackHandler.java

@@ -0,0 +1,24 @@
+package com.baeldung.jaas;
+
+import javax.security.auth.callback.*;
+import java.io.Console;
+import java.io.IOException;
+
+public class ConsoleCallbackHandler implements CallbackHandler {
+
+    @Override
+    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
+        Console console = System.console();
+        for (Callback callback : callbacks) {
+            if (callback instanceof NameCallback) {
+                NameCallback nameCallback = (NameCallback) callback;
+                nameCallback.setName(console.readLine(nameCallback.getPrompt()));
+            } else if (callback instanceof PasswordCallback) {
+                PasswordCallback passwordCallback = (PasswordCallback) callback;
+                passwordCallback.setPassword(console.readPassword(passwordCallback.getPrompt()));
+            } else {
+                throw new UnsupportedCallbackException(callback);
+            }
+        }
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/JaasAuthentication.java

@@ -0,0 +1,13 @@
+package com.baeldung.jaas;
+
+import javax.security.auth.Subject;
+import javax.security.auth.login.LoginException;
+
+public class JaasAuthentication {
+
+    public static void main(String[] args) throws LoginException {
+        LoginService loginService = new LoginService();
+        Subject subject = loginService.login();
+        System.out.println(subject.getPrincipals().iterator().next() + " sucessfully logeed in");
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/JaasAuthorization.java

@@ -0,0 +1,17 @@
+package com.baeldung.jaas;
+
+import javax.security.auth.Subject;
+import javax.security.auth.login.LoginException;
+import java.security.PrivilegedAction;
+
+public class JaasAuthorization {
+
+    public static void main(String[] args) throws LoginException {
+
+        LoginService loginService = new LoginService();
+        Subject subject = loginService.login();
+
+        PrivilegedAction privilegedAction = new ResourceAction();
+        Subject.doAsPrivileged(subject, privilegedAction, null);
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/LoginService.java

@@ -0,0 +1,14 @@
+package com.baeldung.jaas;
+
+import javax.security.auth.Subject;
+import javax.security.auth.login.LoginContext;
+import javax.security.auth.login.LoginException;
+
+public class LoginService {
+
+    public Subject login() throws LoginException {
+        LoginContext loginContext = new LoginContext("jaasApplication", new ConsoleCallbackHandler());
+        loginContext.login();
+        return loginContext.getSubject();
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/ResourceAction.java

@@ -0,0 +1,15 @@
+package com.baeldung.jaas;
+
+import java.security.PrivilegedAction;
+
+public class ResourceAction implements PrivilegedAction {
+    @Override
+    public Object run() {
+        SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            sm.checkPermission(new ResourcePermission("test_resource"));
+        }
+        System.out.println("I have access to test_resource !");
+        return null;
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/ResourcePermission.java

@@ -0,0 +1,9 @@
+package com.baeldung.jaas;
+
+import java.security.BasicPermission;
+
+public class ResourcePermission extends BasicPermission {
+    public ResourcePermission(String name) {
+        super(name);
+    }
+}

core-java-modules/core-java-security-2/src/main/java/com/baeldung/jaas/loginmodule/InMemoryLoginModule.java

@@ -0,0 +1,74 @@
+package com.baeldung.jaas.loginmodule;
+
+import com.sun.security.auth.UserPrincipal;
+
+import javax.security.auth.Subject;
+import javax.security.auth.callback.*;
+import javax.security.auth.login.LoginException;
+import javax.security.auth.spi.LoginModule;
+import java.io.IOException;
+import java.security.Principal;
+import java.util.Map;
+
+public class InMemoryLoginModule implements LoginModule {
+
+    private static final String USERNAME = "testuser";
+    private static final String PASSWORD = "testpassword";
+
+    private Subject subject;
+    private CallbackHandler callbackHandler;
+    private Map<String, ?> sharedState;
+    private Map<String, ?> options;
+
+    private String username;
+    private boolean loginSucceeded = false;
+    private Principal userPrincipal;
+
+    @Override
+    public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String, ?> sharedState,
+                           Map<String, ?> options) {
+        this.subject = subject;
+        this.callbackHandler = callbackHandler;
+        this.sharedState = sharedState;
+        this.options = options;
+    }
+
+    @Override
+    public boolean login() throws LoginException {
+        NameCallback nameCallback = new NameCallback("username: ");
+        PasswordCallback passwordCallback = new PasswordCallback("password: ", false);
+        try {
+            callbackHandler.handle(new Callback[]{nameCallback, passwordCallback});
+            username = nameCallback.getName();
+            String password = new String(passwordCallback.getPassword());
+            if (USERNAME.equals(username) && PASSWORD.equals(password)) {
+                loginSucceeded = true;
+            }
+        } catch (IOException | UnsupportedCallbackException e) {
+            throw new LoginException("Can't login");
+        }
+        return loginSucceeded;
+    }
+
+    @Override
+    public boolean commit() throws LoginException {
+        if (!loginSucceeded) {
+            return false;
+        }
+        userPrincipal = new UserPrincipal(username);
+        subject.getPrincipals().add(userPrincipal);
+        return true;
+    }
+
+    @Override
+    public boolean abort() throws LoginException {
+        logout();
+        return true;
+    }
+
+    @Override
+    public boolean logout() throws LoginException {
+        subject.getPrincipals().remove(userPrincipal);
+        return false;
+    }
+}

core-java-modules/core-java-security-2/src/main/resources/jaas/jaas.login.config

@@ -0,0 +1,3 @@
+jaasApplication {
+   com.baeldung.jaas.loginmodule.InMemoryLoginModule required debug=true;
+};

core-java-modules/core-java-security-2/src/main/resources/jaas/jaas.policy

@@ -0,0 +1,14 @@
+grant codebase "file:./target/core-java-security-2-0.1.0-SNAPSHOT.jar" {
+    permission javax.security.auth.AuthPermission "createLoginContext.jaasApplication";
+    permission javax.security.auth.AuthPermission "doAsPrivileged";
+    permission java.lang.RuntimePermission "readFileDescriptor";
+    permission java.lang.RuntimePermission "writeFileDescriptor";
+};
+
+grant codebase "file:./target/core-java-security-2-0.1.0-SNAPSHOT.jar" {
+    permission javax.security.auth.AuthPermission "modifyPrincipals";
+};
+
+grant principal com.sun.security.auth.UserPrincipal "testuser" {
+    permission com.baeldung.jaas.ResourcePermission "test_resource";
+};

core-java-modules/core-java-string-operations-2/README.md

@@ -8,5 +8,6 @@ This module contains articles about string operations.
 - [String Initialization in Java](https://www.baeldung.com/java-string-initialization)
 - [String toLowerCase and toUpperCase Methods in Java](https://www.baeldung.com/java-string-convert-case)
 - [Java String equalsIgnoreCase()](https://www.baeldung.com/java-string-equalsignorecase)
-- [How to avoid String contains() Case Insensitive in Java](https://www.baeldung.com/how-to-avoid-string-contains-case-insensitive-in-java)
+- [Case-Insensitive String Matching in Java](https://www.baeldung.com/java-case-insensitive-string-matching)
+- [L-Trim and R-Trim in Java](https://www.baeldung.com/l-trim-and-r-trim-in-java)
 - More articles: [[<-- prev]](../core-java-string-operations)

core-java-modules/core-java-string-operations-2/pom.xml

@@ -109,7 +109,7 @@
         <assertj.version>3.6.1</assertj.version>
         <validation-api.version>2.0.0.Final</validation-api.version>
         <commons-lang3.version>3.8.1</commons-lang3.version>
-        <guava.version>27.0.1-jre</guava.version>
+        <guava.version>28.2-jre</guava.version>
         <hibernate-validator.version>6.0.2.Final</hibernate-validator.version>
         <javax.el-api.version>3.0.0</javax.el-api.version>
         <javax.el.version>2.2.6</javax.el.version>

core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/trim/LTrimRTrim.java

@@ -0,0 +1,124 @@
+package com.baeldung.trim;
+
+import java.util.concurrent.TimeUnit;
+import java.util.regex.Pattern;
+
+import org.apache.commons.lang3.StringUtils;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+
+import com.google.common.base.CharMatcher;
+
+/**
+ * Based on https://github.com/tedyoung/indexof-contains-benchmark
+ */
+@Fork(5)
+@State(Scope.Benchmark)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+public class LTrimRTrim {
+
+    private String src;
+    private static String ltrimResult;
+    private static String rtrimResult;
+    private static Pattern LTRIM = Pattern.compile("^\\s+");
+    private static Pattern RTRIM = Pattern.compile("\\s+$");
+
+    public static void main(String[] args) throws Exception {
+        org.openjdk.jmh.Main.main(args);
+    }
+
+    @Setup
+    public void setup() {
+        src = "       White spaces left and right          ";
+        ltrimResult = "White spaces left and right          ";
+        rtrimResult = "       White spaces left and right";
+    }
+
+    public static String whileLtrim(String s) {
+        int i = 0;
+        while (i < s.length() && Character.isWhitespace(s.charAt(i))) {
+            i++;
+        }
+        return s.substring(i);
+    }
+
+    public static String whileRtrim(String s) {
+        int i = s.length() - 1;
+        while (i >= 0 && Character.isWhitespace(s.charAt(i))) {
+            i--;
+        }
+        return s.substring(0, i + 1);
+    }
+
+    private static boolean checkStrings(String ltrim, String rtrim) {
+        boolean result = false;
+
+        if (ltrimResult.equalsIgnoreCase(ltrim) && rtrimResult.equalsIgnoreCase(rtrim))
+            result = true;
+
+        return result;
+    }
+
+    // Going through the String detecting Whitespaces
+    @Benchmark
+    public boolean whileCharacters() {
+        String ltrim = whileLtrim(src);
+        String rtrim = whileRtrim(src);
+
+        return checkStrings(ltrim, rtrim);
+    }
+
+    // replaceAll() and Regular Expressions
+    @Benchmark
+    public boolean replaceAllRegularExpression() {
+        String ltrim = src.replaceAll("^\\s+", "");
+        String rtrim = src.replaceAll("\\s+$", "");
+
+        return checkStrings(ltrim, rtrim);
+    }
+
+    public static String patternLtrim(String s) {
+        return LTRIM.matcher(s)
+            .replaceAll("");
+    }
+
+    public static String patternRtrim(String s) {
+        return RTRIM.matcher(s)
+            .replaceAll("");
+    }
+
+    // Pattern matches() with replaceAll
+    @Benchmark
+    public boolean patternMatchesLTtrimRTrim() {
+        String ltrim = patternLtrim(src);
+        String rtrim = patternRtrim(src);
+
+        return checkStrings(ltrim, rtrim);
+    }
+
+    // Guava CharMatcher trimLeadingFrom / trimTrailingFrom
+    @Benchmark
+    public boolean guavaCharMatcher() {
+        String ltrim = CharMatcher.whitespace().trimLeadingFrom(src);
+        String rtrim = CharMatcher.whitespace().trimTrailingFrom(src);
+
+        return checkStrings(ltrim, rtrim);
+    }
+
+    // Apache Commons StringUtils containsIgnoreCase
+    @Benchmark
+    public boolean apacheCommonsStringUtils() {
+        String ltrim = StringUtils.stripStart(src, null);
+        String rtrim = StringUtils.stripEnd(src, null);
+
+        return checkStrings(ltrim, rtrim);
+    }
+
+}

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/trim/LTrimRTrimUnitTest.java

@@ -0,0 +1,78 @@
+package com.baeldung.trim;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.google.common.base.CharMatcher;
+
+import java.util.regex.Pattern;
+
+/**
+ * BAEL-3755: LTrim and RTrim examples.
+ */
+public class LTrimRTrimUnitTest {
+
+    private String src = "        White spaces left and right            ";
+    private final static String ltrimResult = "White spaces left and right            ";
+    private final static String rtrimResult = "        White spaces left and right";
+
+    @Test
+    public void givenString_whenCallingWhileCharacters_thenReturnsTrue() {
+        String ltrim = LTrimRTrim.whileLtrim(src);
+        String rtrim = LTrimRTrim.whileRtrim(src);
+
+        // Compare the Strings obtained and the expected
+        Assert.assertTrue(ltrimResult.equalsIgnoreCase(ltrim));
+
+        Assert.assertTrue(rtrimResult.equalsIgnoreCase(rtrim));
+    }
+
+    @Test
+    public void givenString_whenCallingContainsWithReplaceAll_shouldReturnTrue() {
+        // Use replaceAll with Regular Expressions
+        String ltrim = src.replaceAll("^\\s+", "");
+        String rtrim = src.replaceAll("\\s+$", "");
+
+        // Compare the Strings obtained and the expected
+        Assert.assertTrue(ltrimResult.equalsIgnoreCase(ltrim));
+
+        Assert.assertTrue(rtrimResult.equalsIgnoreCase(rtrim));
+    }
+
+    @Test
+    public void givenString_whenCallingPaternCompileMatcherReplaceAll_thenReturnsTrue() {
+        // Use Pattern Compile Matcher and Find to avoid case insensitive issues
+        String ltrim = LTrimRTrim.patternLtrim(src);
+        String rtrim = LTrimRTrim.patternRtrim(src);
+
+        // Compare the Strings obtained and the expected
+        Assert.assertTrue(ltrimResult.equalsIgnoreCase(ltrim));
+
+        Assert.assertTrue(rtrimResult.equalsIgnoreCase(rtrim));
+    }
+
+    @Test
+    public void givenString_whenCallingGuavaCharMatcher_thenReturnsTrue() {
+        // Use StringUtils containsIgnoreCase to avoid case insensitive issues
+        String ltrim = CharMatcher.whitespace().trimLeadingFrom(src);;
+        String rtrim = CharMatcher.whitespace().trimTrailingFrom(src);
+
+        // Compare the Strings obtained and the expected
+        Assert.assertTrue(ltrimResult.equalsIgnoreCase(ltrim));
+
+        Assert.assertTrue(rtrimResult.equalsIgnoreCase(rtrim));
+    }
+
+    @Test
+    public void givenString_whenCallingStringUtilsStripStartEnd_thenReturnsTrue() {
+        // Use StringUtils containsIgnoreCase to avoid case insensitive issues
+        String ltrim = StringUtils.stripStart(src, null);
+        String rtrim = StringUtils.stripEnd(src, null);
+
+        // Compare the Strings obtained and the expected
+        Assert.assertTrue(ltrimResult.equalsIgnoreCase(ltrim));
+        Assert.assertTrue(rtrimResult.equalsIgnoreCase(rtrim));
+    }
+
+}

core-java-modules/pom.xml

@@ -100,6 +100,7 @@
         <module>core-java-reflection</module>
 
         <module>core-java-security</module>
+        <module>core-java-security-2</module>
         <module>core-java-streams</module>
         <module>core-java-streams-2</module>
         <module>core-java-streams-3</module>

image-processing/pom.xml

@@ -50,12 +50,24 @@
             <artifactId>imageio-bmp</artifactId>
             <version>${imageio.version}</version>
         </dependency>
+        <dependency>
+            <groupId>net.sourceforge.tess4j</groupId>
+            <artifactId>tess4j</artifactId>
+            <version>${tess4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.bytedeco</groupId>
+            <artifactId>tesseract-platform</artifactId>
+            <version>${tesseract-platform.version}</version>
+        </dependency>
     </dependencies>
     
     <properties>
         <core-image.version>1.3.5</core-image.version>
         <ij.version>1.51h</ij.version>
         <imageio.version>3.3.2</imageio.version>
+        <tess4j.version>4.5.1</tess4j.version>
+        <tesseract-platform.version>4.1.0-1.5.2</tesseract-platform.version>
     </properties>
 
 </project>

image-processing/src/main/java/com/baeldung/tesseract/Tess4JExample.java

@@ -0,0 +1,28 @@
+package com.baeldung.tesseract;
+
+import java.awt.Rectangle;
+import java.io.File;
+
+import net.sourceforge.tess4j.Tesseract;
+import net.sourceforge.tess4j.TesseractException;
+
+public class Tess4JExample {
+
+    public static void main(String[] args) {
+        String result = null;
+        try {
+            File image = new File("src/main/resources/images/baeldung.png");
+            Tesseract tesseract = new Tesseract();
+            tesseract.setLanguage("spa");
+            tesseract.setPageSegMode(1);
+            tesseract.setOcrEngineMode(1);
+            tesseract.setHocr(true);
+            tesseract.setDatapath("src/main/resources/tessdata");
+            result = tesseract.doOCR(image, new Rectangle(1200, 200));
+        } catch (TesseractException e) {
+            e.printStackTrace();
+        }
+        System.out.println(result);
+    }
+
+}

image-processing/src/main/java/com/baeldung/tesseract/TesseractPlatformExample.java

@@ -0,0 +1,26 @@
+package com.baeldung.tesseract;
+
+import org.bytedeco.javacpp.BytePointer;
+import org.bytedeco.leptonica.PIX;
+import org.bytedeco.tesseract.TessBaseAPI;
+
+public class TesseractPlatformExample {
+
+    @SuppressWarnings("resource")
+    public static void main(String[] args) {
+        try {
+            TessBaseAPI tessApi = new TessBaseAPI();
+            tessApi.Init("src/main/resources/tessdata", "eng", 3);
+            tessApi.SetPageSegMode(1);
+            PIX image = org.bytedeco.leptonica.global.lept.pixRead("src/main/resources/images/baeldung.png");
+            tessApi.SetImage(image);
+
+            BytePointer outText = tessApi.GetUTF8Text();
+            System.out.println(outText.getString());
+            tessApi.End();
+        } catch(Exception e) {
+           e.printStackTrace();
+        }
+    }
+
+}

image-processing/src/main/resources/images/output.txt

@@ -0,0 +1,9 @@
+Der ,.schnelle” braune Fuchs springt
+iiber den faulen Hund. Le renard brun
+«rapide» saute par-dessus le chien
+paresseux. La volpe marrone rapida
+salta sopra il cane pigro. El zorro
+marron rapido salta sobre el perro
+perezoso. A raposa marrom rapida
+salta sobre 0 cao preguicoso.
+

jhipster-5/bookstore-monolith/.gitignore

@@ -14,6 +14,7 @@ node_modules/
 npm-debug.log.*
 /.awcache/*
 /.cache-loader/*
+package-lock.json
 
 ######################
 # SASS

jhipster-5/bookstore-monolith/src/test/java/com/baeldung/jhipster5/config/timezone/HibernateTimeZoneIntegrationTest.java

@@ -20,11 +20,11 @@ import static java.lang.String.format;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Unit tests for the UTC Hibernate configuration.
+ * Tests for the UTC Hibernate configuration.
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = BookstoreApp.class)
-public class HibernateTimeZoneTest {
+public class HibernateTimeZoneIntegrationTest {
 
     @Autowired
     private DateTimeWrapperRepository dateTimeWrapperRepository;

pdf/pom.xml

@@ -13,6 +13,12 @@
     </parent>
 
     <dependencies>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>
+    
         <dependency>
             <groupId>org.apache.pdfbox</groupId>
             <artifactId>pdfbox-tools</artifactId>
@@ -80,6 +86,7 @@
         <poi-scratchpad.version>3.15</poi-scratchpad.version>
         <batik-transcoder.version>1.8</batik-transcoder.version>
         <poi-ooxml.version>3.15</poi-ooxml.version>
+        <commons-codec.version>1.14</commons-codec.version>
     </properties>
 
 </project>

pdf/src/test/java/com/baeldung/pdf/base64/EncodeDecodeUnitTest.java

@@ -0,0 +1,63 @@
+package com.baeldung.pdf.base64;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class EncodeDecodeUnitTest {
+
+    private static final String IN_FILE = "src/test/resources/input.pdf";
+    private static final String OUT_FILE = "src/test/resources/output.pdf";
+    private static byte[] inFileBytes;
+
+    @BeforeClass
+    public static void fileToByteArray() throws IOException {
+        inFileBytes = Files.readAllBytes(Paths.get(IN_FILE));
+    }
+
+    @Test
+    public void givenJavaBase64_whenEncoded_thenDecodedOK() throws IOException {
+
+        byte[] encoded = java.util.Base64.getEncoder().encode(inFileBytes);
+
+        byte[] decoded = java.util.Base64.getDecoder().decode(encoded);
+
+        writeToFile(OUT_FILE, decoded);
+
+        assertNotEquals(encoded.length, decoded.length);
+        assertEquals(inFileBytes.length, decoded.length);
+
+        assertArrayEquals(decoded, inFileBytes);
+
+    }
+
+    @Test
+    public void givenApacheCommons_givenJavaBase64_whenEncoded_thenDecodedOK() throws IOException {
+
+        byte[] encoded = org.apache.commons.codec.binary.Base64.encodeBase64(inFileBytes);
+
+        byte[] decoded = org.apache.commons.codec.binary.Base64.decodeBase64(encoded);
+
+        writeToFile(OUT_FILE, decoded);
+
+        assertNotEquals(encoded.length, decoded.length);
+        assertEquals(inFileBytes.length, decoded.length);
+
+        assertArrayEquals(decoded, inFileBytes);
+    }
+
+    private void writeToFile(String fileName, byte[] bytes) throws IOException {
+        FileOutputStream fos = new FileOutputStream(fileName);
+        fos.write(bytes);
+        fos.flush();
+        fos.close();
+    }
+}

persistence-modules/spring-boot-persistence-mongodb/src/main/resources/application.properties

@@ -3,7 +3,7 @@ server.port=8082
 
 #spring boot mongodb
 spring.data.mongodb.host=localhost
-spring.data.mongodb.port=27017
+spring.data.mongodb.port=0
 spring.data.mongodb.database=springboot-mongo
 
 spring.thymeleaf.cache=false

persistence-modules/spring-data-jpa-4/src/main/resources/application.properties

@@ -1,5 +1,5 @@
 spring.jpa.show-sql=true
 #MySql
-spring.datasource.url=jdbc:mysql://localhost:3306/baeldung
+#spring.datasource.url=jdbc:mysql://localhost:3306/baeldung
-spring.datasource.username=baeldung
+#spring.datasource.username=baeldung
-spring.datasource.password=baeldung
+#spring.datasource.password=baeldung

pom.xml

@@ -1339,7 +1339,7 @@
         <!-- plugins -->
         <!-- can't upgrade the plugin yet; as there is an issue with 2.22 no longer running all the tests-->
         <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
-        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
         <java.version>1.8</java.version>
         <log4j.version>1.2.17</log4j.version>
@@ -1367,9 +1367,9 @@
         <maven-install-plugin.version>2.5.2</maven-install-plugin.version>
         <custom-pmd.version>0.0.1</custom-pmd.version>
         <gitflow-incremental-builder.version>3.8</gitflow-incremental-builder.version>
-        <maven-jxr-plugin.version>2.3</maven-jxr-plugin.version>
+        <maven-jxr-plugin.version>3.0.0</maven-jxr-plugin.version>
         <!-- <maven-pmd-plugin.version>3.9.0</maven-pmd-plugin.version> -->
-        <maven-pmd-plugin.version>3.8</maven-pmd-plugin.version>
+        <maven-pmd-plugin.version>3.13.0</maven-pmd-plugin.version>
         <lombok.version>1.16.12</lombok.version>
         <h2.version>1.4.197</h2.version>
     </properties>

spring-batch/src/main/java/org/baeldung/batch/model/Transaction.java

@@ -1,8 +1,10 @@
 package org.baeldung.batch.model;
 
-import java.util.Date;
+import org.baeldung.batch.service.adapter.LocalDateTimeAdapter;
 
 import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
+import java.time.LocalDateTime;
 
 @SuppressWarnings("restriction")
 @XmlRootElement(name = "transactionRecord")
@@ -11,7 +13,7 @@ public class Transaction {
     private int userId;
     private int age;
     private String postCode;
-    private Date transactionDate;
+    private LocalDateTime transactionDate;
     private double amount;
 
     /* getters and setters for the attributes */
@@ -32,11 +34,12 @@ public class Transaction {
         this.userId = userId;
     }
 
-    public Date getTransactionDate() {
+    @XmlJavaTypeAdapter(LocalDateTimeAdapter.class)
+    public LocalDateTime getTransactionDate() {
         return transactionDate;
     }
 
-    public void setTransactionDate(Date transactionDate) {
+    public void setTransactionDate(LocalDateTime transactionDate) {
         this.transactionDate = transactionDate;
     }
 

spring-batch/src/main/java/org/baeldung/batch/service/RecordFieldSetMapper.java

@@ -1,18 +1,19 @@
 package org.baeldung.batch.service;
 
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-
 import org.baeldung.batch.model.Transaction;
 import org.springframework.batch.item.file.mapping.FieldSetMapper;
 import org.springframework.batch.item.file.transform.FieldSet;
 import org.springframework.validation.BindException;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
 public class RecordFieldSetMapper implements FieldSetMapper<Transaction> {
 
     public Transaction mapFieldSet(FieldSet fieldSet) throws BindException {
 
-        SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("d/M/yyy");
+
         Transaction transaction = new Transaction();
         // you can either use the indices or custom names
         // I personally prefer the custom names easy for debugging and
@@ -20,13 +21,10 @@ public class RecordFieldSetMapper implements FieldSetMapper<Transaction> {
         transaction.setUsername(fieldSet.readString("username"));
         transaction.setUserId(fieldSet.readInt("userid"));
         transaction.setAmount(fieldSet.readDouble(3));
+
         // Converting the date
         String dateString = fieldSet.readString(2);
-        try {
+        transaction.setTransactionDate(LocalDate.parse(dateString, formatter).atStartOfDay());
-            transaction.setTransactionDate(dateFormat.parse(dateString));
-        } catch (ParseException e) {
-            e.printStackTrace();
-        }
 
         return transaction;
 

spring-batch/src/main/java/org/baeldung/batch/service/adapter/LocalDateTimeAdapter.java

@@ -0,0 +1,19 @@
+package org.baeldung.batch.service.adapter;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class LocalDateTimeAdapter extends XmlAdapter<String, LocalDateTime> {
+
+    private static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
+    private static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern(DATE_FORMAT);
+
+    public LocalDateTime unmarshal(String v) throws Exception {
+        return LocalDateTime.parse(v, DATE_TIME_FORMATTER);
+    }
+
+    public String marshal(LocalDateTime v) throws Exception {
+        return DATE_TIME_FORMATTER.format(v);
+    }
+}

spring-batch/src/main/resources/output/output1.xml

@@ -2,19 +2,19 @@
 <transactionRecord>
 	<transactionRecord>
 		<amount>10000.0</amount>
-		<transactionDate>2015-10-31T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-10-31 00:00:00</transactionDate>
 		<userId>1234</userId>
 		<username>devendra</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>12321.0</amount>
-		<transactionDate>2015-12-03T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-12-03 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>john</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>23411.0</amount>
-		<transactionDate>2015-02-02T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-02-02 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>robin</username>
 	</transactionRecord>

spring-batch/src/main/resources/output/output2.xml

@@ -2,19 +2,19 @@
 <transactionRecord>
 	<transactionRecord>
 		<amount>10000.0</amount>
-		<transactionDate>2015-10-31T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-10-31 00:00:00</transactionDate>
 		<userId>1234</userId>
 		<username>devendra</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>12321.0</amount>
-		<transactionDate>2015-12-03T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-12-03 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>john</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>23411.0</amount>
-		<transactionDate>2015-02-02T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-02-02 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>robin</username>
 	</transactionRecord>

spring-batch/src/main/resources/output/output3.xml

@@ -2,19 +2,19 @@
 <transactionRecord>
 	<transactionRecord>
 		<amount>10000.0</amount>
-		<transactionDate>2015-10-31T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-10-31 00:00:00</transactionDate>
 		<userId>1234</userId>
 		<username>devendra</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>12321.0</amount>
-		<transactionDate>2015-12-03T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-12-03 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>john</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>23411.0</amount>
-		<transactionDate>2015-02-02T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-02-02 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>robin</username>
 	</transactionRecord>

spring-batch/src/main/resources/output/output4.xml

@@ -2,19 +2,19 @@
 <transactionRecord>
 	<transactionRecord>
 		<amount>10000.0</amount>
-		<transactionDate>2015-10-31T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-10-31 00:00:00</transactionDate>
 		<userId>1234</userId>
 		<username>devendra</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>12321.0</amount>
-		<transactionDate>2015-12-03T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-12-03 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>john</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>23411.0</amount>
-		<transactionDate>2015-02-02T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-02-02 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>robin</username>
 	</transactionRecord>

spring-batch/src/main/resources/output/output5.xml

@@ -2,19 +2,19 @@
 <transactionRecord>
 	<transactionRecord>
 		<amount>10000.0</amount>
-		<transactionDate>2015-10-31T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-10-31 00:00:00</transactionDate>
 		<userId>1234</userId>
 		<username>devendra</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>12321.0</amount>
-		<transactionDate>2015-12-03T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-12-03 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>john</username>
 	</transactionRecord>
 	<transactionRecord>
 		<amount>23411.0</amount>
-		<transactionDate>2015-02-02T00:00:00+05:30</transactionDate>
+		<transactionDate>2015-02-02 00:00:00</transactionDate>
 		<userId>2134</userId>
 		<username>robin</username>
 	</transactionRecord>

spring-batch/src/test/resources/output/batchRetry/retryOutput.xml

@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><age>10</age><amount>10000.0</amount><postCode>430222</postCode><transactionDate>2015-10-31T00:00:00+05:30</transactionDate><userId>1234</userId><username>sammy</username></transactionRecord><transactionRecord><age>10</age><amount>12321.0</amount><postCode>430222</postCode><transactionDate>2015-12-03T00:00:00+05:30</transactionDate><userId>9999</userId><username>john</username></transactionRecord></transactionRecord>
+<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><age>10</age><amount>10000.0</amount><postCode>430222</postCode><transactionDate>2015-10-31 00:00:00</transactionDate><userId>1234</userId><username>sammy</username></transactionRecord><transactionRecord><age>10</age><amount>12321.0</amount><postCode>430222</postCode><transactionDate>2015-12-03 00:00:00</transactionDate><userId>9999</userId><username>john</username></transactionRecord></transactionRecord>

spring-batch/xml/output.xml

@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><amount>10000.0</amount><transactionDate>2015-10-31T00:00:00+05:30</transactionDate><userId>1234</userId><username>devendra</username></transactionRecord><transactionRecord><amount>12321.0</amount><transactionDate>2015-12-03T00:00:00+05:30</transactionDate><userId>2134</userId><username>john</username></transactionRecord><transactionRecord><amount>23411.0</amount><transactionDate>2015-02-02T00:00:00+05:30</transactionDate><userId>2134</userId><username>robin</username></transactionRecord></transactionRecord>
+<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><amount>10000.0</amount><transactionDate>2015-10-31 00:00:00</transactionDate><userId>1234</userId><username>devendra</username></transactionRecord><transactionRecord><amount>12321.0</amount><transactionDate>2015-12-03 00:00:00</transactionDate><userId>2134</userId><username>john</username></transactionRecord><transactionRecord><amount>23411.0</amount><transactionDate>2015-02-02 00:00:00</transactionDate><userId>2134</userId><username>robin</username></transactionRecord></transactionRecord>

spring-batch/xml/retryOutput.xml

@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><age>10</age><amount>10000.0</amount><postCode>430222</postCode><transactionDate>2015-10-31T00:00:00+05:30</transactionDate><userId>1234</userId><username>sammy</username></transactionRecord><transactionRecord><age>10</age><amount>12321.0</amount><postCode>430222</postCode><transactionDate>2015-12-03T00:00:00+05:30</transactionDate><userId>9999</userId><username>john</username></transactionRecord></transactionRecord>
+<?xml version="1.0" encoding="UTF-8"?><transactionRecord><transactionRecord><age>10</age><amount>10000.0</amount><postCode>430222</postCode><transactionDate>2015-10-31 00:00:00</transactionDate><userId>1234</userId><username>sammy</username></transactionRecord><transactionRecord><age>10</age><amount>12321.0</amount><postCode>430222</postCode><transactionDate>2015-12-03 00:00:00</transactionDate><userId>9999</userId><username>john</username></transactionRecord></transactionRecord>

spring-boot-modules/pom.xml

@@ -32,6 +32,7 @@
         <module>spring-boot-crud</module>
         <module>spring-boot-data</module>
         <module>spring-boot-environment</module>
+        <module>spring-boot-exceptions</module>
         <module>spring-boot-flowable</module>
         <!-- <module>spring-boot-gradle</module> --> <!-- Not a maven project -->
         <module>spring-boot-jasypt</module>

spring-boot-modules/spring-boot-exceptions/README.MD

@@ -0,0 +1,7 @@
+## Spring Boot
+
+This module contains articles about Spring Boot Exceptions
+
+### Relevant Articles:
+
+- [The BeanDefinitionOverrideException in Spring Boot](https://www.baeldung.com/spring-boot-bean-definition-override-exception)

spring-boot-modules/spring-boot-exceptions/pom.xml

@@ -0,0 +1,96 @@
+<?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>
+    <artifactId>spring-boot-exceptions</artifactId>
+    <name>spring-boot-exceptions</name>
+    <packaging>jar</packaging>
+	<description>Demo project for working with Spring Boot exceptions</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+            <version>2.2.3.RELEASE</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>spring-boot-exceptions</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+
+        <plugins>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-war-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-resources-plugin</artifactId>
+                <configuration>
+                    <delimiters>
+                        <delimiter>@</delimiter>
+                    </delimiters>
+                    <useDefaultDelimiters>false</useDefaultDelimiters>
+                </configuration>
+            </plugin>
+        </plugins>
+
+    </build>
+
+    <profiles>
+        <profile>
+            <id>autoconfiguration</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>**/*LiveTest.java</exclude>
+                                        <exclude>**/*IntegrationTest.java</exclude>
+                                        <exclude>**/*IntTest.java</exclude>
+                                    </excludes>
+                                    <includes>
+                                        <include>**/AutoconfigurationTest.java</include>
+                                    </includes>
+                                </configuration>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <systemPropertyVariables>
+                                <test.mime>json</test.mime>
+                            </systemPropertyVariables>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+
+    <properties>
+        <!-- The main class to start by executing java -jar -->
+        <start-class>com.baeldung.intro.App</start-class>
+    </properties>
+</project>

spring-boot-modules/spring-boot-exceptions/src/test/resources/logback-test.xml

@@ -0,0 +1,13 @@
+<configuration>
+    <include resource="/org/springframework/boot/logging/logback/base.xml"/>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+    <root level="error">
+        <appender-ref ref="STDOUT"/>
+    </root>
+    <logger name="com.baeldung.testloglevel" level="debug"/>
+</configuration>

spring-boot-modules/spring-boot/README.MD

@@ -31,4 +31,3 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Spring Shutdown Callbacks](https://www.baeldung.com/spring-shutdown-callbacks)
 - [Container Configuration in Spring Boot 2](https://www.baeldung.com/embeddedservletcontainercustomizer-configurableembeddedservletcontainer-spring-boot)
 - [Validation in Spring Boot](https://www.baeldung.com/spring-boot-bean-validation)
-- [The BeanDefinitionOverrideException in Spring Boot](https://www.baeldung.com/spring-boot-bean-definition-override-exception)

spring-cucumber/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-data-rest/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-di/src/main/java/com/baeldung/store/AppConfig.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 import org.springframework.context.annotation.Bean;
 

spring-di/src/main/java/com/baeldung/store/Item.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 public interface Item {
 

spring-di/src/main/java/com/baeldung/store/ItemImpl1.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 public class ItemImpl1 implements Item {
 

spring-di/src/main/java/com/baeldung/store/Store.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 import org.springframework.beans.factory.annotation.Autowired;
 

spring-di/src/main/resources/ioc-context-by-type.xml

@@ -6,9 +6,9 @@
     
 	<!-- Autowired injection -->
 
-    <bean id="item" class="org.baeldung.store.ItemImpl1" />
+    <bean id="item" class="com.baeldung.store.ItemImpl1" />
 	
-    <bean id="xml-store-by-autowire-type" class="org.baeldung.store.Store" autowire="byType">
+    <bean id="xml-store-by-autowire-type" class="com.baeldung.store.Store" autowire="byType">
     </bean>
 
 </beans>

spring-di/src/main/resources/ioc-context.xml

@@ -6,28 +6,28 @@
     
     <!-- Constructor injection -->
 
-    <bean id="item1" class="org.baeldung.store.ItemImpl1" />
+    <bean id="item1" class="com.baeldung.store.ItemImpl1" />
-    <bean id="xml-store-by-constructor" class="org.baeldung.store.Store">
+    <bean id="xml-store-by-constructor" class="com.baeldung.store.Store">
         <constructor-arg type="Item" index="0"    name="item" ref="item1" />
     </bean>
     
     <!-- Setter injection -->
 
-    <bean id="xml-store-by-setter" class="org.baeldung.store.Store">
+    <bean id="xml-store-by-setter" class="com.baeldung.store.Store">
         <property name="item" ref="item1" />
     </bean>
     
     <!-- Autowired injection -->
     
-    <bean id="item" class="org.baeldung.store.ItemImpl1" />
+    <bean id="item" class="com.baeldung.store.ItemImpl1" />
 
-    <bean id="xml-store-by-autowire-name" class="org.baeldung.store.Store" autowire="byName">
+    <bean id="xml-store-by-autowire-name" class="com.baeldung.store.Store" autowire="byName">
     </bean>
     
     <!-- Lazy instantiation -->
     
-    <bean id="item1-lazy" class="org.baeldung.store.ItemImpl1" lazy-init="true" />
+    <bean id="item1-lazy" class="com.baeldung.store.ItemImpl1" lazy-init="true" />
-    <bean id="xml-store-by-setter-lazy" class="org.baeldung.store.Store">
+    <bean id="xml-store-by-setter-lazy" class="com.baeldung.store.Store">
         <property name="item" ref="item1-lazy" />
     </bean>
 

spring-di/src/test/java/com/baeldung/store/AppConfigUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 import static org.junit.Assert.assertNotNull;
 

spring-di/src/test/java/com/baeldung/store/XmlAppConfigByTypeUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 import static org.junit.Assert.assertNotNull;
 

spring-di/src/test/java/com/baeldung/store/XmlAppConfigUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.store;
+package com.baeldung.store;
 
 import static org.junit.Assert.assertNotNull;
 

spring-dispatcher-servlet/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-drools/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-freemarker/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-integration/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-jenkins-pipeline/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-jersey/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-jinq/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-jms/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-kafka/src/test/java/com/baeldung/SpringContextLiveTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-kafka/src/test/java/com/baeldung/SpringContextManualTest.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

spring-katharsis/src/main/java/com/baeldung/Application.java

@@ -1,4 +1,4 @@
-package org.baeldung;
+package com.baeldung;
 
 import io.katharsis.spring.boot.v3.KatharsisConfigV3;
 

spring-katharsis/src/main/java/com/baeldung/Setup.java

@@ -1,14 +1,14 @@
-package org.baeldung;
+package com.baeldung;
 
 import java.util.Arrays;
 import java.util.HashSet;
 
 import javax.annotation.PostConstruct;
 
-import org.baeldung.persistence.dao.RoleRepository;
+import com.baeldung.persistence.dao.RoleRepository;
-import org.baeldung.persistence.dao.UserRepository;
+import com.baeldung.persistence.dao.UserRepository;
-import org.baeldung.persistence.model.Role;
+import com.baeldung.persistence.model.Role;
-import org.baeldung.persistence.model.User;
+import com.baeldung.persistence.model.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 

spring-katharsis/src/main/java/com/baeldung/persistence/dao/RoleRepository.java

@@ -1,6 +1,6 @@
-package org.baeldung.persistence.dao;
+package com.baeldung.persistence.dao;
 
-import org.baeldung.persistence.model.Role;
+import com.baeldung.persistence.model.Role;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface RoleRepository extends JpaRepository<Role, Long> {

spring-katharsis/src/main/java/com/baeldung/persistence/dao/UserRepository.java

@@ -1,6 +1,6 @@
-package org.baeldung.persistence.dao;
+package com.baeldung.persistence.dao;
 
-import org.baeldung.persistence.model.User;
+import com.baeldung.persistence.model.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface UserRepository extends JpaRepository<User, Long> {

spring-katharsis/src/main/java/com/baeldung/persistence/katharsis/RoleResourceRepository.java

@@ -1,12 +1,12 @@
-package org.baeldung.persistence.katharsis;
+package com.baeldung.persistence.katharsis;
 
 
+import com.baeldung.persistence.dao.RoleRepository;
 import io.katharsis.queryspec.QuerySpec;
 import io.katharsis.repository.ResourceRepositoryV2;
 import io.katharsis.resource.list.ResourceList;
 
-import org.baeldung.persistence.dao.RoleRepository;
+import com.baeldung.persistence.model.Role;
-import org.baeldung.persistence.model.Role;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 

spring-katharsis/src/main/java/com/baeldung/persistence/katharsis/UserResourceRepository.java

@@ -1,11 +1,11 @@
-package org.baeldung.persistence.katharsis;
+package com.baeldung.persistence.katharsis;
 
+import com.baeldung.persistence.dao.UserRepository;
+import com.baeldung.persistence.model.User;
 import io.katharsis.queryspec.QuerySpec;
 import io.katharsis.repository.ResourceRepositoryV2;
 import io.katharsis.resource.list.ResourceList;
 
-import org.baeldung.persistence.dao.UserRepository;
-import org.baeldung.persistence.model.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 

spring-katharsis/src/main/java/com/baeldung/persistence/katharsis/UserToRoleRelationshipRepository.java

@@ -1,5 +1,8 @@
-package org.baeldung.persistence.katharsis;
+package com.baeldung.persistence.katharsis;
 
+import com.baeldung.persistence.dao.RoleRepository;
+import com.baeldung.persistence.dao.UserRepository;
+import com.baeldung.persistence.model.User;
 import io.katharsis.queryspec.QuerySpec;
 import io.katharsis.repository.RelationshipRepositoryV2;
 import io.katharsis.resource.list.ResourceList;
@@ -7,10 +10,7 @@ import io.katharsis.resource.list.ResourceList;
 import java.util.HashSet;
 import java.util.Set;
 
-import org.baeldung.persistence.dao.RoleRepository;
+import com.baeldung.persistence.model.Role;
-import org.baeldung.persistence.dao.UserRepository;
-import org.baeldung.persistence.model.Role;
-import org.baeldung.persistence.model.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 

spring-katharsis/src/main/java/com/baeldung/persistence/model/Role.java

@@ -1,4 +1,4 @@
-package org.baeldung.persistence.model;
+package com.baeldung.persistence.model;
 
 import io.katharsis.resource.annotations.JsonApiId;
 import io.katharsis.resource.annotations.JsonApiRelation;

spring-katharsis/src/main/java/com/baeldung/persistence/model/User.java

@@ -1,4 +1,4 @@
-package org.baeldung.persistence.model;
+package com.baeldung.persistence.model;
 
 import io.katharsis.resource.annotations.JsonApiId;
 import io.katharsis.resource.annotations.JsonApiRelation;

spring-katharsis/src/test/java/com/baeldung/SpringContextTest.java

@@ -1,6 +1,5 @@
-package org.baeldung;
+package com.baeldung;
 
-import org.baeldung.Application;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.boot.test.context.SpringBootTest;

spring-katharsis/src/test/java/com/baeldung/test/JsonApiLiveTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.test;
+package com.baeldung.test;
 
 import static org.junit.Assert.assertEquals;
 

spring-rest-http/src/main/java/com/baeldung/requestmapping/FooMappingExamplesController.java

@@ -1,6 +1,8 @@
 package com.baeldung.requestmapping;
 
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -103,8 +105,8 @@ public class FooMappingExamplesController {
     // --- Ambiguous Mapping
  
     @GetMapping(value = "foos/duplicate" )
-    public String duplicate() {
+    public ResponseEntity<String> duplicate() {
-        return "Duplicate";
+        return new ResponseEntity<>("Duplicate", HttpStatus.OK);
     }
     
     // uncomment for exception of type java.lang.IllegalStateException: Ambiguous mapping
@@ -114,14 +116,14 @@ public class FooMappingExamplesController {
     // return "Duplicate";
     // }
     
-    @GetMapping(value = "foos/duplicate/xml", produces = MediaType.APPLICATION_XML_VALUE)
+    @GetMapping(value = "foos/duplicate", produces = MediaType.APPLICATION_XML_VALUE)
-    public String duplicateXml() {
+    public ResponseEntity<String> duplicateXml() {
-        return "Duplicate Xml";
+        return new ResponseEntity<>("<message>Duplicate</message>", HttpStatus.OK);
     }
      
-    @GetMapping(value = "foos/duplicate/json", produces = MediaType.APPLICATION_JSON_VALUE)
+    @GetMapping(value = "foos/duplicate", produces = MediaType.APPLICATION_JSON_VALUE)
-    public String duplicateJson() {
+    public ResponseEntity<String> duplicateJson() {
-        return "Duplicate Json";
+        return new ResponseEntity<>("{\"message\":\"Duplicate\"}", HttpStatus.OK);
     }
 
 }

spring-rest-http/src/test/java/com/baeldung/requestmapping/FooMappingExamplesControllerUnitTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.requestmapping;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(FooMappingExamplesController.class)
+public class FooMappingExamplesControllerUnitTest {
+
+    @Autowired
+    private MockMvc mvc;
+
+    @Test
+    public void givenAcceptsJson_whenGetDuplicate_thenJsonResponseReturned() throws Exception {
+        mvc.perform(get("/ex/foos/duplicate")
+            .accept(MediaType.APPLICATION_JSON))
+            .andExpect(status().isOk())
+            .andExpect(content().string("{\"message\":\"Duplicate\"}"));
+    }
+
+    @Test
+    public void givenAcceptsXml_whenGetDuplicate_thenXmlResponseReturned() throws Exception {
+        mvc.perform(get("/ex/foos/duplicate")
+            .accept(MediaType.APPLICATION_XML))
+            .andExpect(status().isOk())
+            .andExpect(content().string("<message>Duplicate</message>"));
+    }
+}

spring-security-modules/spring-security-mvc-boot-1/src/test/java/org/baeldung/web/CustomUserDetailsServiceIntegrationTest.java

@@ -59,7 +59,7 @@ public class CustomUserDetailsServiceIntegrationTest {
     @WithAnonymousUser
     public void givenAnonymous_whenRequestFoo_thenRetrieveUnauthorized() throws Exception {
         this.mvc.perform(get("/foos/1").with(csrf()))
-            .andExpect(status().isUnauthorized());
+            .andExpect(status().isFound());
     }
 
     @Test

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssured2IntegrationTest.java

@@ -17,8 +17,7 @@ import static io.restassured.RestAssured.with;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssured2IntegrationTest {
-    private static final int PORT = 8084;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/odds";
     private static final String APPLICATION_JSON = "application/json";
@@ -27,9 +26,11 @@ public class RestAssured2IntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
-        RestAssured.port = PORT;
+        RestAssured.port = port;
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_JSON)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredIntegrationTest.java

@@ -21,8 +21,7 @@ import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssuredIntegrationTest {
-    private static final int PORT = 8083;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/events?id=390";
     private static final String APPLICATION_JSON = "application/json";
@@ -31,9 +30,11 @@ public class RestAssuredIntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        RestAssured.port = PORT;
+        RestAssured.port = port;
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_JSON)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredXML2IntegrationTest.java

@@ -12,11 +12,11 @@ import static com.github.tomakehurst.wiremock.client.WireMock.get;
 import static com.github.tomakehurst.wiremock.client.WireMock.stubFor;
 import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
 import static io.restassured.RestAssured.get;
+import static io.restassured.RestAssured.port;
 import static org.hamcrest.Matchers.hasItems;
 
 public class RestAssuredXML2IntegrationTest {
-    private static final int PORT = 8082;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/teachers";
     private static final String APPLICATION_XML = "application/xml";
@@ -25,9 +25,11 @@ public class RestAssuredXML2IntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        RestAssured.port = PORT;
+        RestAssured.port = port;
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
         stubFor(get(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_XML)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/RestAssuredXMLIntegrationTest.java

@@ -17,8 +17,7 @@ import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.xml.HasXPath.hasXPath;
 
 public class RestAssuredXMLIntegrationTest {
-    private static final int PORT = 8081;
+    private static WireMockServer wireMockServer;
-    private static WireMockServer wireMockServer = new WireMockServer(PORT);
 
     private static final String EVENTS_PATH = "/employees";
     private static final String APPLICATION_XML = "application/xml";
@@ -27,9 +26,11 @@ public class RestAssuredXMLIntegrationTest {
     @BeforeClass
     public static void before() throws Exception {
         System.out.println("Setting up!");
+        final int port = Util.getAvailablePort();
+        wireMockServer = new WireMockServer(port);
         wireMockServer.start();
-        configureFor("localhost", PORT);
+        configureFor("localhost", port);
-        RestAssured.port = PORT;
+        RestAssured.port = port;
         stubFor(post(urlEqualTo(EVENTS_PATH)).willReturn(
           aResponse().withStatus(200)
             .withHeader("Content-Type", APPLICATION_XML)

testing-modules/rest-assured/src/test/java/com/baeldung/restassured/Util.java

@@ -1,10 +1,15 @@
 package com.baeldung.restassured;
 
+import java.io.IOException;
 import java.io.InputStream;
+import java.net.ServerSocket;
+import java.util.Random;
 import java.util.Scanner;
 
 final class Util {
 
+    private static final int DEFAULT_PORT = 8069;
+
     private Util() {
     }
 
@@ -12,4 +17,22 @@ final class Util {
         Scanner s = new Scanner(is).useDelimiter("\\A");
         return s.hasNext() ? s.next() : "";
     }
+
+    static int getAvailablePort() {
+        return new Random()
+                .ints(6000, 9000)
+                .filter(Util::isFree)
+                .findFirst()
+                .orElse(DEFAULT_PORT);
+    }
+
+
+    private static boolean isFree(int port) {
+        try {
+            new ServerSocket(port).close();
+            return true;
+        } catch (IOException e) {
+            return false;
+        }
+    }
 }