Merge branch 'master' into BAEL-7142-spring-ai

apache-httpclient4/src/main/java/com/baeldung/filter/CustomWebSecurityConfigurerAdapter.java

@@ -7,14 +7,14 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
 
 @Configuration
 @EnableWebSecurity
-public class CustomWebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter {
+public class CustomWebSecurityConfigurerAdapter {
 
     @Autowired private RestAuthenticationEntryPoint authenticationEntryPoint;
 
@@ -27,8 +27,8 @@ public class CustomWebSecurityConfigurerAdapter extends WebSecurityConfigurerAda
           .authorities("ROLE_USER");
     }
 
-    @Override
-    protected void configure(HttpSecurity http) throws Exception {
+    @Bean
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http
           .authorizeRequests()
           .antMatchers("/securityNone")
@@ -40,6 +40,8 @@ public class CustomWebSecurityConfigurerAdapter extends WebSecurityConfigurerAda
           .authenticationEntryPoint(authenticationEntryPoint);
 
         http.addFilterAfter(new CustomFilter(), BasicAuthenticationFilter.class);
+
+        return http.build();
     }
     
     @Bean

core-java-modules/core-java-arrays-convert/src/test/java/com/baeldung/array/conversions/ByteToCharArrayUnitTest.java

@@ -0,0 +1,47 @@
+package com.baeldung.array.conversions;
+
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.StandardCharsets;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class ByteToCharArrayUnitTest {
+    public static byte[] byteArray = {65, 66, 67, 68};
+    public static char[] expected = {'A', 'B', 'C', 'D'};
+
+    @Test
+    public void givenByteArray_WhenUsingStandardCharsets_thenConvertToCharArray() {
+        char[] charArray = new String(byteArray, StandardCharsets.UTF_8).toCharArray();
+        assertArrayEquals(expected, charArray);
+    }
+
+    @Test
+    public void givenByteArray_WhenUsingSUsingStreams_thenConvertToCharArray() throws IOException {
+        ByteArrayInputStream inputStream = new ByteArrayInputStream(byteArray);
+        InputStreamReader reader = new InputStreamReader(inputStream);
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        int data;
+        while ((data = reader.read()) != -1) {
+            char ch = (char) data;
+            outputStream.write(ch);
+        }
+        char[] charArray = outputStream.toString().toCharArray();
+        assertArrayEquals(expected, charArray);
+    }
+
+    @Test
+    public void givenByteArray_WhenUsingCharBuffer_thenConvertToCharArray() {
+        ByteBuffer byteBuffer = ByteBuffer.wrap(byteArray);
+        CharBuffer charBuffer = StandardCharsets.UTF_8.decode(byteBuffer);
+        char[] charArray = new char[charBuffer.remaining()];
+        charBuffer.get(charArray);
+        assertArrayEquals(expected, charArray);
+    }
+}

core-java-modules/core-java-collections-maps-7/pom.xml

@@ -38,6 +38,16 @@
             <artifactId>guava</artifactId>
             <version>32.1.2-jre</version>
         </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>1.37</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>1.37</version>
+        </dependency>
     </dependencies>
 
     <build>

core-java-modules/core-java-collections-maps-7/src/main/java/com/baeldung/map/incrementmapkey/BenchmarkMapMethods.java

@@ -1,4 +1,4 @@
-package com.baeldung.map;
+package com.baeldung.map.incrementmapkey;
 
 import java.util.HashMap;
 import java.util.Map;

core-java-modules/core-java-collections-maps-7/src/main/java/com/baeldung/map/incrementmapkey/BenchmarkMapMethodsJMH.java

@@ -0,0 +1,68 @@
+package com.baeldung.map.incrementmapkey;
+
+import java.util.concurrent.TimeUnit;
+
+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.State;
+
+@State(Scope.Benchmark)
+public class BenchmarkMapMethodsJMH {
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    @Fork(value = 1, warmups = 1)
+    public void benchMarkGuavaMap() {
+        IncrementMapValueWays im = new IncrementMapValueWays();
+        im.charFrequencyUsingAtomicMap(getString());
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    @Fork(value = 1, warmups = 1)
+    public void benchContainsKeyMap() {
+        IncrementMapValueWays im = new IncrementMapValueWays();
+        im.charFrequencyUsingContainsKey(getString());
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    @Fork(value = 1, warmups = 1)
+    public void benchMarkComputeMethod() {
+        IncrementMapValueWays im = new IncrementMapValueWays();
+        im.charFrequencyUsingCompute(getString());
+    }
+
+    @Benchmark
+    @BenchmarkMode(Mode.AverageTime)
+    @OutputTimeUnit(TimeUnit.NANOSECONDS)
+    @Fork(value = 1, warmups = 1)
+    public void benchMarkMergeMethod() {
+        IncrementMapValueWays im = new IncrementMapValueWays();
+        im.charFrequencyUsingMerge(getString());
+    }
+
+    public static void main(String[] args) throws Exception {
+        org.openjdk.jmh.Main.main(args);
+    }
+
+    private String getString() {
+        return
+          "Once upon a time in a quaint village nestled between rolling hills and whispering forests, there lived a solitary storyteller named Elias. Elias was known for spinning tales that transported listeners to magical realms and awakened forgotten dreams.\n"
+            + "\n"
+            + "His favorite spot was beneath an ancient oak tree, its sprawling branches offering shade to those who sought refuge from the bustle of daily life. Villagers of all ages would gather around Elias, their faces illuminated by the warmth of his stories.\n"
+            + "\n" + "One evening, as dusk painted the sky in hues of orange and purple, a curious young girl named Lily approached Elias. Her eyes sparkled with wonder as she asked for a tale unlike any other.\n" + "\n"
+            + "Elias smiled, sensing her thirst for adventure, and began a story about a forgotten kingdom veiled by mist, guarded by mystical creatures and enchanted by ancient spells. With each word, the air grew thick with anticipation, and the listeners were transported into a world where magic danced on the edges of reality.\n"
+            + "\n" + "As Elias weaved the story, Lily's imagination took flight. She envisioned herself as a brave warrior, wielding a shimmering sword against dark forces, her heart fueled by courage and kindness.\n" + "\n"
+            + "The night wore on, but the spell of the tale held everyone captive. The villagers laughed, gasped, and held their breaths, journeying alongside the characters through trials and triumphs.\n" + "\n"
+            + "As the final words lingered in the air, a sense of enchantment settled upon the listeners. They thanked Elias for the gift of his storytelling, each carrying a piece of the magical kingdom within their hearts.\n" + "\n"
+            + "Lily, inspired by the story, vowed to cherish the spirit of adventure and kindness in her own life. With a newfound spark in her eyes, she bid Elias goodnight, already dreaming of the countless adventures awaiting her.\n" + "\n"
+            + "Under the star-studded sky, Elias remained beneath the ancient oak, his heart aglow with the joy of sharing tales that ignited imagination and inspired dreams. And as the night embraced the village, whispers of the enchanted kingdom lingered in the breeze, promising endless possibilities to those who dared to believe.";
+    }
+}

core-java-modules/core-java-collections-maps-7/src/main/java/com/baeldung/map/incrementmapkey/IncrementMapValueWays.java

@@ -1,4 +1,4 @@
-package com.baeldung.map;
+package com.baeldung.map.incrementmapkey;
 
 import java.util.HashMap;
 import java.util.Map;

core-java-modules/core-java-collections-maps-7/src/test/java/com/baeldung/map/incrementmapkey/IncrementMapValueUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.map;
+package com.baeldung.map.incrementmapkey;
 
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -9,6 +9,8 @@ import java.util.stream.Stream;
 import org.junit.Assert;
 import org.junit.Test;
 
+import com.baeldung.map.incrementmapkey.IncrementMapValueWays;
+
 public class IncrementMapValueUnitTest {
 
     @Test

core-java-modules/core-java-concurrency-advanced-5/src/main/java/com/baeldung/wait_synchronization/ConditionChecker.java

@@ -2,7 +2,7 @@ package com.baeldung.wait_synchronization;
 
 public class ConditionChecker {
 
-    private volatile Boolean jobIsDone;
+    private volatile boolean jobIsDone;
     private final Object lock = new Object();
 
     public void ensureCondition() {
@@ -21,4 +21,4 @@ public class ConditionChecker {
             lock.notify();
         }
     }
-}
+}

core-java-modules/core-java-console/pom.xml

@@ -159,7 +159,7 @@
     </profiles>
 
     <properties>
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <source.version>1.8</source.version>
         <target.version>1.8</target.version>
         <ascii.version>0.3.2</ascii.version>

core-java-modules/core-java-documentation/pom.xml

@@ -33,7 +33,7 @@
 
     <properties>
         <!-- maven plugins -->
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <source.version>1.8</source.version>
         <target.version>1.8</target.version>
     </properties>

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

@@ -61,7 +61,7 @@
     </build>
 
     <properties>
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <wiremock.version>3.3.1</wiremock.version>
     </properties>
 

core-java-modules/core-java-io/pom.xml

@@ -134,7 +134,7 @@
 
     <properties>
         <!-- maven plugins -->
-        <maven-javadoc-plugin.version>3.5.0</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <hsqldb.version>2.7.1</hsqldb.version>
         <!-- Mime Type Libraries -->
         <tika.version>2.8.0</tika.version>

core-java-modules/core-java-jar/pom.xml

@@ -274,7 +274,7 @@
         <mockito.version>4.6.1</mockito.version>
         <!-- maven plugins -->
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <onejar-maven-plugin.version>1.4.4</onejar-maven-plugin.version>
         <maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
         <maven-assembly-plugin.version>3.3.0</maven-assembly-plugin.version>

core-java-modules/core-java-numbers-conversions/src/test/java/com/baeldung/negate/NegateIntUnitTest.java

@@ -0,0 +1,69 @@
+package com.baeldung.negate;
+
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class NegateIntUnitTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(NegateIntUnitTest.class);
+
+    @Test
+    void whenUsingUnaryMinusOperator_thenGetExpectedResult() {
+        int x = 42;
+        assertEquals(-42, -x);
+
+        int z = 0;
+        assertEquals(0, -z);
+
+        int n = -42;
+        assertEquals(42, -n);
+    }
+
+    @Test
+    void whenUsingBitwiseComplementOperator_thenGetExpectedResult() {
+        int x = 42;
+        assertEquals(-42, ~x + 1);
+
+        int z = 0;
+        assertEquals(0, ~z + 1);
+
+        int n = -42;
+        assertEquals(42, ~n + 1);
+    }
+
+    @Test
+    void givenIntMinValue_whenUsingUnaryMinusOperator_thenCannotGetExpectedResult() {
+        int min = Integer.MIN_VALUE;
+        LOG.info("The value of '-min' is: " + -min);
+
+        assertTrue((-min) < 0);
+    }
+
+    @Test
+    void givenIntMinValue_whenUsingBitwiseComplementOperator_thenCannotGetExpectedResult() {
+        int min = Integer.MIN_VALUE;
+        int result = ~min + 1;
+        LOG.info("The value of '~min + 1' is: " + result);
+
+        assertTrue(result < 0);
+    }
+
+
+    @Test
+    void whenUsingUnaryMinusOperatorWithMinInt_thenGetExpectedResult() {
+        int x = 42;
+        assertEquals(-42, Math.negateExact(x));
+
+        int z = 0;
+        assertEquals(0, Math.negateExact(z));
+
+        int n = -42;
+        assertEquals(42, Math.negateExact(n));
+
+        int min = Integer.MIN_VALUE;
+        assertThrowsExactly(ArithmeticException.class, () -> Math.negateExact(min));
+    }
+}

core-java-modules/core-java-serialization/pom.xml

@@ -177,7 +177,7 @@
         <unix4j.version>0.4</unix4j.version>
         <grep4j.version>1.8.7</grep4j.version>
         <javamoney.moneta.version>1.1</javamoney.moneta.version>
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
         <spring.core.version>4.3.20.RELEASE</spring.core.version>
     </properties>
 

core-java-modules/core-java-strings/src/main/java/com/baeldung/stringbuffer/ComparePerformance.java

@@ -0,0 +1,63 @@
+package com.baeldung.stringbuffer;
+
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.RunnerException;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+
+@BenchmarkMode(Mode.SingleShotTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+@Measurement(batchSize = 10000, iterations = 10)
+@Warmup(batchSize = 1000, iterations = 10)
+@State(Scope.Thread)
+public class ComparePerformance {
+
+    String strInitial = "springframework";
+    String strFinal = "";
+    String replacement = "java-";
+
+    @Benchmark
+    public String benchmarkStringConcatenation() {
+        strFinal += strInitial;
+        return strFinal;
+    }
+
+    @Benchmark
+    public StringBuffer benchmarkStringBufferConcatenation() {
+        StringBuffer stringBuffer = new StringBuffer(strFinal);
+        stringBuffer.append(strInitial);
+        return stringBuffer;
+    }
+
+    @Benchmark
+    public String benchmarkStringReplacement() {
+        strFinal = strInitial.replaceFirst("spring", replacement);
+        return strFinal;
+    }
+
+    @Benchmark
+    public StringBuffer benchmarkStringBufferReplacement() {
+        StringBuffer stringBuffer = new StringBuffer(strInitial);
+        stringBuffer.replace(0,6, replacement);
+        return stringBuffer;
+    }
+
+    public static void main(String[] args) throws RunnerException {
+        Options options = new OptionsBuilder()
+            .include(ComparePerformance.class.getSimpleName()).threads(1)
+            .forks(1).shouldFailOnError(true)
+            .shouldDoGC(true)
+            .jvmArgs("-server").build();
+        new Runner(options).run();
+    }
+}

core-java-modules/core-java-strings/src/main/java/com/baeldung/stringbuffer/HashCode.java

@@ -0,0 +1,24 @@
+package com.baeldung.stringbuffer;
+
+public class HashCode {
+
+    public static long getHashCodeString(String string) {
+        return string.hashCode();
+    }
+
+    public static long getHashCodeSBuffer(StringBuffer strBuff) {
+        return strBuff.hashCode();
+    }
+
+    public static void main(String[] args) {
+        String str = "Spring";
+        System.out.println("String HashCode pre concatenation :" + getHashCodeString(str));
+        str += "Framework";
+        System.out.println("String HashCode post concatenation :" + getHashCodeString(str));
+
+        StringBuffer sBuf = new StringBuffer("Spring");
+        System.out.println("StringBuffer HashCode pre concatenation :" + getHashCodeSBuffer(sBuf));
+        sBuf.append("Framework");
+        System.out.println("StringBuffer HashCode post concatenation :" + getHashCodeSBuffer(sBuf));
+    }
+}

core-java-modules/core-java-strings/src/test/java/com/baeldung/stringIterator/StringIteratorTest.java

@@ -17,7 +17,7 @@ public class StringIteratorTest {
     public void whenUseJavaForLoop_thenIterate() {
         String input = "Hello, Baeldung!";
         String expectedOutput = "Hello, Baeldung!";
-        String result = StringIterator.javaForLoop(input);
+        String result = StringIterator.javaforLoop(input);
         assertEquals(expectedOutput, result);
     }
   
@@ -25,7 +25,7 @@ public class StringIteratorTest {
     public void whenUseForEachMethod_thenIterate() {
         String input = "Hello, Baeldung!";
         String expectedOutput = "Hello, Baeldung!";
-        String result = StringIterator.java8ForEach(input);
+        String result = StringIterator.java8forEach(input);
         assertEquals(expectedOutput, result);
     }
   

core-java-modules/core-java-strings/src/test/java/com/baeldung/stringbuffer/ComparePerformanceTest.java

@@ -0,0 +1,32 @@
+package com.baeldung.stringbuffer;
+
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.assertThat;
+
+
+public class ComparePerformanceTest {
+
+    ComparePerformance cp = new ComparePerformance();
+
+    @Test
+    public void whenStringConcatenated_thenResultAsExpected() {
+        assertThat(cp.benchmarkStringConcatenation()).isEqualTo("springframework");
+    }
+
+    @Test
+    public void whenStringBufferConcatenated_thenResultAsExpected() {
+        StringBuffer stringBuffer = new StringBuffer("springframework");
+        assertThat(cp.benchmarkStringBufferConcatenation()).isEqualToIgnoringCase(stringBuffer);
+    }
+
+    @Test
+    public void whenStringReplaced_thenResultAsExpected() {
+        assertThat(cp.benchmarkStringReplacement()).isEqualTo("java-framework");
+    }
+
+    @Test
+    public void whenStringBufferReplaced_thenResultAsExpected() {
+        StringBuffer stringBuffer = new StringBuffer("java-framework");
+        assertThat(cp.benchmarkStringBufferReplacement()).isEqualToIgnoringCase(stringBuffer);
+    }
+}

core-java-modules/core-java-strings/src/test/java/com/baeldung/stringbuffer/HashCodeTest.java

@@ -0,0 +1,24 @@
+package com.baeldung.stringbuffer;
+
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class HashCodeTest {
+
+    String str = "Spring";
+    StringBuffer sBuf = new StringBuffer("Spring");
+
+    @Test
+    public void whenStringConcat_thenHashCodeChanges() {
+        HashCode hc = new HashCode();
+
+        long initialStringHashCode = hc.getHashCodeString(str);
+        long initialSBufHashCode =  hc.getHashCodeSBuffer(sBuf);
+
+        str += "Framework";
+        sBuf.append("Framework");
+
+        assertThat(initialStringHashCode).isNotEqualTo(hc.getHashCodeString(str));
+        assertThat(initialSBufHashCode).isEqualTo(hc.getHashCodeSBuffer(sBuf));
+    }
+}

core-java-modules/core-java-uuid/pom.xml

@@ -154,7 +154,7 @@
     </profiles>
 
     <properties>
-        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.6.2</maven-javadoc-plugin.version>
     </properties>
 
 </project>

core-java-modules/core-java-uuid/src/main/java/com/baeldung/uuid/UUIDPositiveLongGenerator.java

@@ -0,0 +1,83 @@
+package com.baeldung.uuid;
+
+import java.nio.ByteBuffer;
+import java.security.SecureRandom;
+import java.util.UUID;
+
+/**
+ * Methods are called by reflection in the unit test
+ */
+@SuppressWarnings("unused")
+public class UUIDPositiveLongGenerator {
+    public long getLeastSignificantBits() {
+        return Math.abs(UUID.randomUUID().getLeastSignificantBits());
+    }
+
+    public long getMostSignificantBits() {
+        return Math.abs(UUID.randomUUID().getMostSignificantBits());
+    }
+
+    public long combineByteBuffer() {
+        UUID uuid = UUID.randomUUID();
+        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
+        bb.putLong(uuid.getMostSignificantBits());
+        bb.putLong(uuid.getLeastSignificantBits());
+        bb.rewind();
+        return Math.abs(bb.getLong());
+    }
+
+    public long combineBitwise() {
+        UUID uniqueUUID = UUID.randomUUID();
+        long mostSignificantBits = uniqueUUID.getMostSignificantBits();
+        long leastSignificantBits = uniqueUUID.getLeastSignificantBits();
+        return Math.abs((mostSignificantBits << 32) | (leastSignificantBits & 0xFFFFFFFFL));
+    }
+
+    public long combineDirect() {
+        UUID uniqueUUID = UUID.randomUUID();
+        long mostSignificantBits = uniqueUUID.getMostSignificantBits();
+        long leastSignificantBits = uniqueUUID.getLeastSignificantBits();
+        return Math.abs(mostSignificantBits ^ (leastSignificantBits >> 1));
+    }
+
+    public long combinePermutation() {
+        UUID uuid = UUID.randomUUID();
+        long mostSigBits = uuid.getMostSignificantBits();
+        long leastSigBits = uuid.getLeastSignificantBits();
+        byte[] uuidBytes = new byte[16];
+
+        for (int i = 0; i < 8; i++) {
+            uuidBytes[i] = (byte) (mostSigBits >>> (8 * (7 - i)));
+            uuidBytes[i + 8] = (byte) (leastSigBits >>> (8 * (7 - i)));
+        }
+
+        long result = 0;
+        for (byte b : uuidBytes) {
+            result = (result << 8) | (b & 0xFF);
+        }
+        return Math.abs(result);
+    }
+
+    public long combineWithSecureRandom() {
+        UUID uniqueUUID = UUID.randomUUID();
+        SecureRandom secureRandom = new SecureRandom();
+        long randomBits = secureRandom.nextLong();
+
+        long mostSignificantBits = uniqueUUID.getMostSignificantBits() ^ randomBits;
+        long leastSignificantBits = uniqueUUID.getLeastSignificantBits();
+
+        return Math.abs((mostSignificantBits << 32) | (leastSignificantBits & 0xFFFFFFFFL));
+    }
+
+    public long combineWithNanoTime() {
+        UUID uniqueUUID = UUID.randomUUID();
+        long nanoTime = System.nanoTime();
+
+        long mostSignificantBits = uniqueUUID.getMostSignificantBits() ^ nanoTime;
+        long leastSignificantBits = uniqueUUID.getLeastSignificantBits();
+
+        return Math.abs((mostSignificantBits << 32) | (leastSignificantBits & 0xFFFFFFFFL));
+    }
+
+
+}

core-java-modules/core-java-uuid/src/test/java/com/baeldung/uuid/UUIDPositiveLongGeneratorUnitTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.uuid;
+
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Method;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class UUIDPositiveLongGeneratorUnitTest {
+
+    private final UUIDPositiveLongGenerator uuidLongGenerator = new UUIDPositiveLongGenerator();
+
+    private final Set<Long> uniqueValues = new HashSet<>();
+
+    @Test
+    void whenForeachMethods_thenRetryWhileNotUnique() throws Exception {
+        for (Method method : uuidLongGenerator.getClass().getDeclaredMethods()) {
+            long uniqueValue;
+            do uniqueValue = (long) method.invoke(uuidLongGenerator); while (!isUnique(uniqueValue));
+            assertThat(uniqueValue).isPositive();
+        }
+    }
+
+    @Test
+    void whenGivenLongValue_thenCheckUniqueness() {
+        long uniqueValue = generateUniqueLong();
+        assertThat(uniqueValue).isPositive();
+    }
+
+    private long generateUniqueLong() {
+        long uniqueValue;
+        do uniqueValue = uuidLongGenerator.combineBitwise(); while (!isUnique(uniqueValue));
+        return uniqueValue;
+    }
+
+    private boolean isUnique(long value) {
+        // Implement uniqueness checking logic, for example, by checking in the database
+        return uniqueValues.add(value);
+    }
+
+}

core-java-modules/core-java-uuid/src/test/resources/logback.xml

@@ -2,8 +2,7 @@
 <configuration>
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>
-            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
-            </pattern>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
         </encoder>
     </appender>
 

feign/pom.xml

@@ -74,6 +74,17 @@
             <version>${wire.mock.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>jakarta.xml.bind</groupId>
+            <artifactId>jakarta.xml.bind-api</artifactId>
+            <version>4.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.xml.bind</groupId>
+            <artifactId>jaxb-impl</artifactId>
+            <version>4.0.0</version>
+            <scope>runtime</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -85,7 +96,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>jaxb2-maven-plugin</artifactId>
-                <version>2.5.0</version>
+                <version>3.1.0</version>
                 <executions>
                     <execution>
                         <id>xjc</id>
@@ -131,6 +142,7 @@
         <feign.form.spring.version>3.8.0</feign.form.spring.version>
         <spring.cloud.openfeign.version>3.1.2</spring.cloud.openfeign.version>
         <wire.mock.version>2.33.2</wire.mock.version>
+        <jakarta.xml.bind.version>4.0.0</jakarta.xml.bind.version>
     </properties>
 
 </project>

jmeter/src/main/java/com/baeldung/configuration/WebSecurityConfiguration.java

@@ -1,52 +1,44 @@
 package com.baeldung.configuration;
 
+import java.util.HashSet;
+import java.util.Set;
+
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.crypto.factory.PasswordEncoderFactories;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.SecurityFilterChain;
 
 @Configuration
-public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
+public class WebSecurityConfiguration {
 
-    @Override
-    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
-        
+    @Bean
+    public InMemoryUserDetailsManager userDetailsService() {
         PasswordEncoder encoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
-        
-        auth.inMemoryAuthentication()
-          .withUser("admin").password(encoder.encode("admin")).roles("USER", "ADMIN")
-          .and()
-          .withUser("user1").password(encoder.encode("password1")).roles("USER")
-          .and()
-          .withUser("user2").password(encoder.encode("password2")).roles("USER")
-          .and()
-          .withUser("user3").password(encoder.encode("password3")).roles("USER")
-          .and()
-          .withUser("user4").password(encoder.encode("password4")).roles("USER")
-          .and()
-          .withUser("user5").password(encoder.encode("password5")).roles("USER")
-          .and()
-          .withUser("user6").password(encoder.encode("password6")).roles("USER")
-          .and()
-          .withUser("user7").password(encoder.encode("password7")).roles("USER")
-          .and()
-          .withUser("user8").password(encoder.encode("password8")).roles("USER")
-          .and()
-          .withUser("user9").password(encoder.encode("password9")).roles("USER")
-          .and()
-          .withUser("user10").password(encoder.encode("password10")).roles("USER");
+
+        Set<UserDetails> users = new HashSet<>();
+        users.add(User.withUsername("admin").password(encoder.encode("admin")).roles("USER", "ADMIN").build());
+        for(int i=1;i<=10;i++){
+            users.add(User.withUsername("user"+i).password(encoder.encode("password")+i).roles("USER").build());
+        }
+
+        return new InMemoryUserDetailsManager(users);
     }
 
-    @Override
-    protected void configure(HttpSecurity http) throws Exception {
-        
+    @Bean
+    public SecurityFilterChain securityFilter(HttpSecurity http) throws Exception {
+
         http
           .authorizeRequests()
           .antMatchers("/secured/**").authenticated()        
           .anyRequest().permitAll()
           .and()
           .httpBasic();
+
+        return http.build();
     }    
 }

performance-tests/pom.xml

@@ -164,7 +164,7 @@
         <shade.plugin.version>3.2.4</shade.plugin.version>
         <install.version>3.0.0-M1</install.version>
         <jar.plugin.version>3.2.0</jar.plugin.version>
-        <javadoc.plugin.version>3.2.0</javadoc.plugin.version>
+        <javadoc.plugin.version>3.6.2</javadoc.plugin.version>
         <resources.plugin.version>3.1.0</resources.plugin.version>
         <site.plugin.version>3.9.1</site.plugin.version>
         <source.plugin.version>3.2.1</source.plugin.version>

persistence-modules/atomikos/pom.xml

@@ -8,7 +8,7 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
+        <artifactId>persistence-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>