Merge branch 'master' into master

core-java-modules/core-java-datetime-java8/src/main/java/com/baeldung/random/LegacyRandomDateTimes.java

@@ -0,0 +1,19 @@
+package com.baeldung.random;
+
+import java.util.Date;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class LegacyRandomDateTimes {
+
+    public static Date between(Date startInclusive, Date endExclusive) {
+        long startMillis = startInclusive.getTime();
+        long endMillis = endExclusive.getTime();
+        long randomMillisSinceEpoch = ThreadLocalRandom.current().nextLong(startMillis, endMillis);
+
+        return new Date(randomMillisSinceEpoch);
+    }
+
+    public static Date timestamp() {
+        return new Date(ThreadLocalRandom.current().nextInt() * 1000L);
+    }
+}

core-java-modules/core-java-datetime-java8/src/main/java/com/baeldung/random/RandomDateTimes.java

@@ -0,0 +1,27 @@
+package com.baeldung.random;
+
+import java.time.Instant;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class RandomDateTimes {
+
+    public static Instant timestamp() {
+        return Instant.ofEpochSecond(ThreadLocalRandom.current().nextInt());
+    }
+
+    public static Instant between(Instant startInclusive, Instant endExclusive) {
+        long startSeconds = startInclusive.getEpochSecond();
+        long endSeconds = endExclusive.getEpochSecond();
+        long random = ThreadLocalRandom.current().nextLong(startSeconds, endSeconds);
+
+        return Instant.ofEpochSecond(random);
+    }
+
+    public static Instant after(Instant startInclusive) {
+        return between(startInclusive, Instant.MAX);
+    }
+
+    public static Instant before(Instant upperExclusive) {
+        return between(Instant.MIN, upperExclusive);
+    }
+}

core-java-modules/core-java-datetime-java8/src/main/java/com/baeldung/random/RandomDates.java

@@ -0,0 +1,20 @@
+package com.baeldung.random;
+
+import java.time.LocalDate;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class RandomDates {
+
+    public static LocalDate between(LocalDate startInclusive, LocalDate endExclusive) {
+        long startEpochDay = startInclusive.toEpochDay();
+        long endEpochDay = endExclusive.toEpochDay();
+        long randomDay = ThreadLocalRandom.current().nextLong(startEpochDay, endEpochDay);
+
+        return LocalDate.ofEpochDay(randomDay);
+    }
+
+    public static LocalDate date() {
+        int hundredYears = 100 * 365;
+        return LocalDate.ofEpochDay(ThreadLocalRandom.current().nextInt(-hundredYears, hundredYears));
+    }
+}

core-java-modules/core-java-datetime-java8/src/main/java/com/baeldung/random/RandomTimes.java

@@ -0,0 +1,19 @@
+package com.baeldung.random;
+
+import java.time.LocalTime;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class RandomTimes {
+
+    public static LocalTime between(LocalTime startTime, LocalTime endTime) {
+        int startSeconds = startTime.toSecondOfDay();
+        int endSeconds = endTime.toSecondOfDay();
+        int randomTime = ThreadLocalRandom.current().nextInt(startSeconds, endSeconds);
+
+        return LocalTime.ofSecondOfDay(randomTime);
+    }
+
+    public static LocalTime time() {
+        return between(LocalTime.MIN, LocalTime.MAX);
+    }
+}

core-java-modules/core-java-datetime-java8/src/test/java/com/baeldung/random/LegacyRandomDateTimesUnitTest.java

@@ -0,0 +1,36 @@
+package com.baeldung.random;
+
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class LegacyRandomDateTimesUnitTest {
+
+    private static final Date MIN_DATE = new Date(Long.MIN_VALUE);
+    private static final Date MAX_DATE = new Date(Long.MAX_VALUE);
+
+    @RepeatedTest(100)
+    void givenARange_WhenGenTimestamp_ShouldBeInRange() {
+        long aDay = TimeUnit.DAYS.toMillis(1);
+        long now = new Date().getTime();
+
+        Date hundredYearsAgo = new Date(now - aDay * 365 * 100);
+        Date tenDaysAgo = new Date(now - aDay * 10);
+
+        Date random = LegacyRandomDateTimes.between(hundredYearsAgo, tenDaysAgo);
+        assertThat(random).isBetween(hundredYearsAgo, tenDaysAgo);
+    }
+
+    @RepeatedTest(100)
+    void givenNoRange_WhenGenTimestamp_ShouldGenerateRandomTimestamps() {
+        Date random = LegacyRandomDateTimes.timestamp();
+
+        assertThat(random)
+                .isNotNull()
+                .isBetween(MIN_DATE, MAX_DATE);
+    }
+
+}

core-java-modules/core-java-datetime-java8/src/test/java/com/baeldung/random/RandomDateTimesUnitTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.random;
+
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RandomDateTimesUnitTest {
+
+    @RepeatedTest(100)
+    void givenNoRange_WhenGenTimestamp_ShouldGenerateRandomTimestamps() {
+        Instant random = RandomDateTimes.timestamp();
+
+        assertThat(random).isBetween(Instant.MIN, Instant.MAX);
+    }
+
+    @RepeatedTest(100)
+    void givenARange_WhenGenTimestamp_ShouldBeInRange() {
+        Instant hundredYearsAgo = Instant.now().minus(Duration.ofDays(100 * 365));
+        Instant tenDaysAgo = Instant.now().minus(Duration.ofDays(10));
+
+        Instant random = RandomDateTimes.between(hundredYearsAgo, tenDaysAgo);
+        assertThat(random).isBetween(hundredYearsAgo, tenDaysAgo);
+    }
+}

core-java-modules/core-java-datetime-java8/src/test/java/com/baeldung/random/RandomDatesUnitTest.java

@@ -0,0 +1,27 @@
+package com.baeldung.random;
+
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.time.LocalDate;
+import java.time.Month;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RandomDatesUnitTest {
+
+    @RepeatedTest(100)
+    void givenNoRange_WhenGenDate_ShouldGenerateRandomDates() {
+        LocalDate randomDay = RandomDates.date();
+
+        assertThat(randomDay).isAfter(LocalDate.MIN).isBefore(LocalDate.MAX);
+    }
+
+    @RepeatedTest(100)
+    void givenARange_WhenGenDate_ShouldBeInRange() {
+        LocalDate start = LocalDate.of(1989, Month.OCTOBER, 14);
+        LocalDate end = LocalDate.now();
+
+        LocalDate random = RandomDates.between(start, end);
+        assertThat(random).isAfter(start).isBefore(end);
+    }
+}

core-java-modules/core-java-datetime-java8/src/test/java/com/baeldung/random/RandomTimesUnitTest.java

@@ -0,0 +1,20 @@
+package com.baeldung.random;
+
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.time.LocalTime;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RandomTimesUnitTest {
+
+    @RepeatedTest(100)
+    void givenARange_WhenGenTime_ShouldBeInRange() {
+        LocalTime morning = LocalTime.of(8, 30);
+        LocalTime randomTime = RandomTimes.between(LocalTime.MIDNIGHT, morning);
+
+        assertThat(randomTime)
+                .isAfter(LocalTime.MIDNIGHT).isBefore(morning)
+                .isAfter(LocalTime.MIN).isBefore(LocalTime.MAX);
+    }
+}

core-java-modules/core-java-exceptions/src/main/java/com/baeldung/trywithresource/AutoCloseableMain.java

@@ -0,0 +1,16 @@
+package com.baeldung.trywithresource;
+
+public class AutoCloseableMain {
+
+    public static void main(String[] args) throws Exception {
+        orderOfClosingResources();
+    }
+
+    private static void orderOfClosingResources() throws Exception {
+        try (AutoCloseableResourcesFirst af = new AutoCloseableResourcesFirst();
+             AutoCloseableResourcesSecond as = new AutoCloseableResourcesSecond()) {
+            af.doSomething();
+            as.doSomething();
+        }
+    }
+}

core-java-modules/core-java-exceptions/src/main/java/com/baeldung/trywithresource/AutoCloseableResourcesFirst.java

@@ -0,0 +1,17 @@
+package com.baeldung.trywithresource;
+
+public class AutoCloseableResourcesFirst implements AutoCloseable {
+
+    public AutoCloseableResourcesFirst() {
+        System.out.println("Constructor -> AutoCloseableResources_First");
+    }
+
+    public void doSomething() {
+        System.out.println("Something -> AutoCloseableResources_First");
+    }
+
+    @Override
+    public void close() throws Exception {
+        System.out.println("Closed AutoCloseableResources_First");
+    }
+}

core-java-modules/core-java-exceptions/src/main/java/com/baeldung/trywithresource/AutoCloseableResourcesSecond.java

@@ -0,0 +1,17 @@
+package com.baeldung.trywithresource;
+
+public class AutoCloseableResourcesSecond implements AutoCloseable {
+
+    public AutoCloseableResourcesSecond() {
+        System.out.println("Constructor -> AutoCloseableResources_Second");
+    }
+
+    public void doSomething() {
+        System.out.println("Something -> AutoCloseableResources_Second");
+    }
+
+    @Override
+    public void close() throws Exception {
+        System.out.println("Closed AutoCloseableResources_Second");
+    }
+}

core-java-modules/core-java-exceptions/src/main/java/com/baeldung/trywithresource/MyResource.java

@@ -0,0 +1,8 @@
+package com.baeldung.trywithresource;
+
+public class MyResource implements AutoCloseable {
+    @Override
+    public void close() throws Exception {
+        System.out.println("Closed MyResource");
+    }
+}

core-java-modules/core-java-io-2/src/test/java/com/baeldung/scanner/JavaScannerUnitTest.java

@@ -0,0 +1,44 @@
+package com.baeldung.scanner;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.NoSuchElementException;
+import java.util.Scanner;
+
+import org.junit.Test;
+
+public class JavaScannerUnitTest {
+
+    @Test
+    public void whenReadingLines_thenCorrect() {
+        String input = "Scanner\nTest\n";
+        try (Scanner scanner = new Scanner(input)) {
+            assertEquals("Scanner", scanner.nextLine());
+            assertEquals("Test", scanner.nextLine());
+        }
+    }
+
+    @Test
+    public void whenReadingPartialLines_thenCorrect() {
+        String input = "Scanner\n";
+        try (Scanner scanner = new Scanner(input)) {
+            scanner.useDelimiter("");
+            scanner.next();
+            assertEquals("canner", scanner.nextLine());
+        }
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void givenNoNewLine_whenReadingNextLine_thenThrowNoSuchElementException() {
+        try (Scanner scanner = new Scanner("")) {
+            String result = scanner.nextLine();
+        }
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void givenScannerIsClosed_whenReadingNextLine_thenThrowIllegalStateException() {
+        Scanner scanner = new Scanner("");
+        scanner.close();
+        String result = scanner.nextLine();
+    }
+}

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

@@ -0,0 +1,11 @@
+## Java String Operations
+
+This module contains articles about string operations.
+
+### Relevant Articles:
+- [Concatenating Strings In Java](https://www.baeldung.com/java-strings-concatenation)
+- [Checking for Empty or Blank Strings in Java](https://www.baeldung.com/java-blank-empty-strings)
+- [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)
+- More articles: [[<-- prev]](../core-java-string-operations)

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

@@ -0,0 +1,81 @@
+<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-string-operations-2</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-operations-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <version>${validation-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate.validator</groupId>
+            <artifactId>hibernate-validator</artifactId>
+            <version>${hibernate-validator.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>javax.el</groupId>
+            <artifactId>javax.el-api</artifactId>
+            <version>${javax.el-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish.web</groupId>
+            <artifactId>javax.el</artifactId>
+            <version>${javax.el.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-library</artifactId>
+            <version>${org.hamcrest.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-operations-2</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <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>
+        <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>
+    </properties>
+
+</project>

core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/EmptyStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class EmptyStringCheck {
 

core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/Java5EmptyStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class Java5EmptyStringCheck {
 

core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/PlainJavaBlankStringCheck.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 class PlainJavaBlankStringCheck {
 

core-java-modules/core-java-string-operations-2/src/main/java/com/baeldung/emptystrings/SomeClassWithValidations.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
 import javax.validation.constraints.Pattern;
 

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/changecase/ToLowerCaseUnitTest.java

@@ -1,29 +1,29 @@
-package com.baeldung.string.changecase;
-
-import static org.junit.Assert.assertEquals;
-
-import java.util.Locale;
-
-import org.junit.Test;
-
-public class ToLowerCaseUnitTest {
-
-    private static final Locale TURKISH = new Locale("tr");
-    private String name = "John Doe";
-    private String foreignUppercase = "\u0049";
-
-    @Test
-    public void givenMixedCaseString_WhenToLowerCase_ThenResultIsLowerCase() {
-        assertEquals("john doe", name.toLowerCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToLowerCaseWithoutLocale_ThenResultIsLowerCase() {
-        assertEquals("\u0069", foreignUppercase.toLowerCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToLowerCaseWithLocale_ThenResultIsLowerCase() {
-        assertEquals("\u0131", foreignUppercase.toLowerCase(TURKISH));
-    }
-}
+package com.baeldung.changecase;
+
+import org.junit.Test;
+
+import java.util.Locale;
+
+import static org.junit.Assert.assertEquals;
+
+public class ToLowerCaseUnitTest {
+
+    private static final Locale TURKISH = new Locale("tr");
+    private String name = "John Doe";
+    private String foreignUppercase = "\u0049";
+
+    @Test
+    public void givenMixedCaseString_WhenToLowerCase_ThenResultIsLowerCase() {
+        assertEquals("john doe", name.toLowerCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToLowerCaseWithoutLocale_ThenResultIsLowerCase() {
+        assertEquals("\u0069", foreignUppercase.toLowerCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToLowerCaseWithLocale_ThenResultIsLowerCase() {
+        assertEquals("\u0131", foreignUppercase.toLowerCase(TURKISH));
+    }
+}

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/changecase/ToUpperCaseUnitTest.java

@@ -1,29 +1,29 @@
-package com.baeldung.string.changecase;
-
-import static org.junit.Assert.assertEquals;
-
-import java.util.Locale;
-
-import org.junit.Test;
-
-public class ToUpperCaseUnitTest {
-
-    private static final Locale TURKISH = new Locale("tr");
-    private String name = "John Doe";
-    private String foreignLowercase = "\u0069";
-
-    @Test
-    public void givenMixedCaseString_WhenToUpperCase_ThenResultIsUpperCase() {
-        assertEquals("JOHN DOE", name.toUpperCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToUpperCaseWithoutLocale_ThenResultIsUpperCase() {
-        assertEquals("\u0049", foreignLowercase.toUpperCase());
-    }
-
-    @Test
-    public void givenForeignString_WhenToUpperCaseWithLocale_ThenResultIsUpperCase() {
-        assertEquals("\u0130", foreignLowercase.toUpperCase(TURKISH));
-    }
-}
+package com.baeldung.changecase;
+
+import org.junit.Test;
+
+import java.util.Locale;
+
+import static org.junit.Assert.assertEquals;
+
+public class ToUpperCaseUnitTest {
+
+    private static final Locale TURKISH = new Locale("tr");
+    private String name = "John Doe";
+    private String foreignLowercase = "\u0069";
+
+    @Test
+    public void givenMixedCaseString_WhenToUpperCase_ThenResultIsUpperCase() {
+        assertEquals("JOHN DOE", name.toUpperCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToUpperCaseWithoutLocale_ThenResultIsUpperCase() {
+        assertEquals("\u0049", foreignLowercase.toUpperCase());
+    }
+
+    @Test
+    public void givenForeignString_WhenToUpperCaseWithLocale_ThenResultIsUpperCase() {
+        assertEquals("\u0130", foreignLowercase.toUpperCase(TURKISH));
+    }
+}

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/emptystrings/EmptyStringsUnitTest.java

@@ -1,21 +1,17 @@
-package com.baeldung.string.emptystrings;
+package com.baeldung.emptystrings;
 
-import static org.hamcrest.Matchers.iterableWithSize;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
-
-import java.util.Set;
+import com.google.common.base.Strings;
+import org.apache.commons.lang3.StringUtils;
+import org.junit.Test;
 
 import javax.validation.ConstraintViolation;
 import javax.validation.Validation;
 import javax.validation.Validator;
 import javax.validation.ValidatorFactory;
+import java.util.Set;
 
-import org.apache.commons.lang3.StringUtils;
-import org.junit.Test;
-
-import com.google.common.base.Strings;
+import static org.hamcrest.Matchers.iterableWithSize;
+import static org.junit.Assert.*;
 
 public class EmptyStringsUnitTest {
 

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/equalsIgnoreCase/StringEqualsIgnoreCaseUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.equalsIgnoreCase;
+package com.baeldung.equalsIgnoreCase;
 
 import org.apache.commons.lang3.StringUtils;
 import org.junit.Test;

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/initialization/StringInitializationUnitTest.java

@@ -1,11 +1,9 @@
 package com.baeldung.initialization;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.assertFalse;
-
 import org.junit.Test;
 
+import static org.junit.Assert.*;
+
 public class StringInitializationUnitTest {
 
     private String fieldString;

core-java-modules/core-java-string-operations-2/src/test/java/com/baeldung/stringconcatenation/StringConcatenationUnitTest.java

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

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

@@ -0,0 +1,16 @@
+## Java String Operations
+
+This module contains articles about string operations.
+
+### Relevant Articles:
+- [Comparing Strings in Java](https://www.baeldung.com/java-compare-strings)
+- [Check If a String Is Numeric in Java](https://www.baeldung.com/java-check-string-number)
+- [Get Substring from String in Java](https://www.baeldung.com/java-substring)
+- [Split a String in Java](https://www.baeldung.com/java-split-string)
+- [Common String Operations in Java](https://www.baeldung.com/java-string-operations)
+- [Java toString() Method](https://www.baeldung.com/java-tostring)
+- [String Operations with Java Streams](https://www.baeldung.com/java-stream-operations-on-strings)
+- [Adding a Newline Character to a String in Java](https://www.baeldung.com/java-string-newline)
+- [Check If a String Contains a Substring](https://www.baeldung.com/java-string-contains-substring)
+- [Java Base64 Encoding and Decoding](https://www.baeldung.com/java-base64-encode-and-decode)
+- More articles: [[next -->]](../core-java-string-operations-2)

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

@@ -0,0 +1,66 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>core-java-string-operations</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+    <name>core-java-string-operations</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-java</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-java</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-core</artifactId>
+            <version>${jmh-core.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjdk.jmh</groupId>
+            <artifactId>jmh-generator-annprocess</artifactId>
+            <version>${jmh-generator.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>core-java-string-operations</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+    </build>
+
+    <properties>
+        <commons-lang3.version>3.8.1</commons-lang3.version>
+        <assertj.version>3.6.1</assertj.version>
+        <commons-codec.version>1.10</commons-codec.version>
+    </properties>
+
+</project>

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/Benchmarking.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import java.util.concurrent.TimeUnit;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/CheckIntegerInput.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import java.util.Scanner;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/IsNumeric.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.math.NumberUtils;

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/isnumeric/IsNumericDriver.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import org.apache.log4j.Logger;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/newline/AddingNewLineToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.newline;
+package com.baeldung.newline;
 
 public class AddingNewLineToString {
 	

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/streamoperations/JoinerSplitter.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.streamoperations;
 
 import java.util.Arrays;
 import java.util.List;

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/substringsearch/SubstringSearchPerformanceComparison.java

@@ -1,18 +1,11 @@
-package com.baeldung.string.search.performance;
+package com.baeldung.substringsearch;
+
+import org.apache.commons.lang3.StringUtils;
+import org.openjdk.jmh.annotations.*;
 
 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;
-
 /**
  * Based on https://github.com/tedyoung/indexof-contains-benchmark
  */

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/Customer.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 public class Customer {
     private String firstName;

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/CustomerArrayToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import java.util.Arrays;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/CustomerComplexObjectToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 public class CustomerComplexObjectToString extends Customer {
     private Order order;

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/CustomerPrimitiveToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 public class CustomerPrimitiveToString extends Customer {
     private long balance;

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/CustomerReflectionToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import java.util.List;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/CustomerWrapperCollectionToString.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import java.util.List;
 

core-java-modules/core-java-string-operations/src/main/java/com/baeldung/tostring/Order.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 public class Order {
 

core-java-modules/core-java-string-operations/src/main/resources/log4j.properties

@@ -0,0 +1,8 @@
+# Root logger option
+log4j.rootLogger=DEBUG, stdout
+
+# Redirect log messages to console
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/base64encodinganddecoding/StringToByteArrayUnitTest.java

@@ -1,16 +1,15 @@
 package com.baeldung.base64encodinganddecoding;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
+import org.junit.Test;
 
+import javax.xml.bind.DatatypeConverter;
 import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.Base64;
 
-import javax.xml.bind.DatatypeConverter;
-
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 public class StringToByteArrayUnitTest {
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/CoreJavaIsNumericUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/NumberUtilsIsCreatableUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/NumberUtilsIsParsableUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/RegularExpressionsUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/StringUtilsIsNumericSpaceUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/isnumeric/StringUtilsIsNumericUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.isnumeric;
+package com.baeldung.isnumeric;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/split/SplitUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.split;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/streamoperations/JoinerSplitterUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.streamoperations;
 
 import org.junit.Test;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/stringcomparison/StringComparisonUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.stringcomparison;
 
 import static org.assertj.core.api.Assertions.assertThat;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/substring/SubstringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string;
+package com.baeldung.substring;
 
 import java.util.Scanner;
 import java.util.regex.Matcher;

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/substringsearch/SubstringSearchUnitTest.java

@@ -1,12 +1,12 @@
-package com.baeldung.string.search;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
+package com.baeldung.substringsearch;
 
 import org.apache.commons.lang3.StringUtils;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 /**
  * BAEL-2832: Different ways to check if a Substring could be found in a String.
  */

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/tostring/CustomerArrayToStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/tostring/CustomerComplexObjectToStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/tostring/CustomerPrimitiveToStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 

core-java-modules/core-java-string-operations/src/test/java/com/baeldung/tostring/CustomerWrapperCollectionToStringUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.string.tostring;
+package com.baeldung.tostring;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 

ethereum/pom.xml

@@ -1,5 +1,5 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.baeldung.ethereum</groupId>
     <artifactId>ethereum</artifactId>
@@ -215,5 +215,4 @@
         <slf4j.version>1.7.25</slf4j.version>
         <spring-boot-maven-plugin.version>2.0.4.RELEASE</spring-boot-maven-plugin.version>
     </properties>
-
 </project>

hystrix/src/test/java/com/baeldung/hystrix/SpringAndHystrixIntegrationTest.java

@@ -13,7 +13,7 @@ import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT, classes = AppConfig.class)
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = AppConfig.class)
 public class SpringAndHystrixIntegrationTest {
 
     @Autowired

jackson-simple/src/test/java/com/baeldung/jackson/annotation/MyBean.java

@@ -1,8 +1,10 @@
 package com.baeldung.jackson.annotation;
 
+import com.fasterxml.jackson.annotation.JsonGetter;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonInclude.Include;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonSetter;
 
 @JsonInclude(Include.NON_NULL)
 @JsonPropertyOrder({ "name", "id" })
@@ -18,4 +20,14 @@ public class MyBean {
         this.id = id;
         this.name = name;
     }
+    
+    @JsonGetter("name")
+    public String getTheName() {
+        return name;
+    }
+    
+    @JsonSetter("name")
+    public void setTheName(String name) {
+        this.name = name;
+    }
 }

java-strings-2/README.md

@@ -5,13 +5,7 @@ This module contains articles about strings in Java.
 ### Relevant Articles:
 
 - [Java Localization – Formatting Messages](https://www.baeldung.com/java-localization-messages-formatting)
-- [Check If a String Contains a Substring](https://www.baeldung.com/java-string-contains-substring)
 - [Java – Generate Random String](https://www.baeldung.com/java-random-string)
-- [Java Base64 Encoding and Decoding](https://www.baeldung.com/java-base64-encode-and-decode)
-- [Concatenating Strings In Java](https://www.baeldung.com/java-strings-concatenation)
 - [Java String Interview Questions and Answers](https://www.baeldung.com/java-string-interview-questions)
-- [Checking for Empty or Blank Strings in Java](https://www.baeldung.com/java-blank-empty-strings)
-- [String Initialization in Java](https://www.baeldung.com/java-string-initialization)
 - [Java Multi-line String](https://www.baeldung.com/java-multiline-string)
-- [String toLowerCase and toUpperCase Methods in Java](https://www.baeldung.com/java-string-convert-case)
-- More articles: [[<-- prev>]](/java-strings) [[next -->]](/java-strings-3)
+- More articles: [[<-- prev>]](/java-strings)

java-strings-3/README.md

@@ -1,10 +0,0 @@
-## Java Strings Cookbooks and Examples
-
-This module contains articles about strings in Java.
-
-### Relevant Articles:
-- [Java String equalsIgnoreCase()](https://www.baeldung.com/java-string-equalsignorecase)
-- [Finding the Difference Between Two Strings in Java](https://www.baeldung.com/java-difference-between-two-strings)
-- [Counting Words in a String](https://www.baeldung.com/java-word-counting)
-- [Convert Character Array to String in Java](https://www.baeldung.com/java-char-array-to-string)
-- More articles: [[<-- prev>]](/java-strings-2) 

java-strings-3/pom.xml

@@ -1,161 +0,0 @@
-<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>java-strings-3</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
-    <packaging>jar</packaging>
-    <name>java-strings-3</name>
-
-    <parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>parent-java</artifactId>
-        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-java</relativePath>
-    </parent>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-core</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.openjdk.jmh</groupId>
-            <artifactId>jmh-generator-annprocess</artifactId>
-            <version>${jmh-core.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.ibm.icu</groupId>
-            <artifactId>icu4j</artifactId>
-            <version>${icu4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons-io.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-            <version>${commons-codec.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.hamcrest</groupId>
-            <artifactId>hamcrest-library</artifactId>
-            <version>${org.hamcrest.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.bitbucket.cowwoc</groupId>
-            <artifactId>diff-match-patch</artifactId>
-            <version>1.2</version>
-            <scope>test</scope>
-        </dependency>
-
-        <!-- Added for password generation -->
-        <dependency>
-            <groupId>org.passay</groupId>
-            <artifactId>passay</artifactId>
-            <version>${passay.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-text</artifactId>
-            <version>${commons-text.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.vdurmont</groupId>
-            <artifactId>emoji-java</artifactId>
-            <version>${emoji-java.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.ahocorasick</groupId>
-            <artifactId>ahocorasick</artifactId>
-            <version>${ahocorasick.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>javax.validation</groupId>
-            <artifactId>validation-api</artifactId>
-            <version>${validation-api.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.hibernate.validator</groupId>
-            <artifactId>hibernate-validator</artifactId>
-            <version>${hibernate-validator.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>javax.el</groupId>
-            <artifactId>javax.el-api</artifactId>
-            <version>${javax.el-api.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.glassfish.web</groupId>
-            <artifactId>javax.el</artifactId>
-            <version>${javax.el.version}</version>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <finalName>java-strings-3</finalName>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-                <filtering>true</filtering>
-            </resource>
-        </resources>
-
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
-                    <compilerArgument>-parameters</compilerArgument>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
-    <properties>
-        <commons-lang3.version>3.8.1</commons-lang3.version>
-        <commons-codec.version>1.10</commons-codec.version>
-        <passay.version>1.3.1</passay.version>
-        <!-- testing -->
-        <assertj.version>3.6.1</assertj.version>
-        <emoji-java.version>4.0.0</emoji-java.version>
-        <ahocorasick.version>0.4.0</ahocorasick.version>
-        <icu4j.version>61.1</icu4j.version>
-        <guava.version>28.0-jre</guava.version>
-        <commons-text.version>1.4</commons-text.version>
-        <validation-api.version>2.0.0.Final</validation-api.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>
-    </properties>
-
-</project>

java-strings-3/src/main/resources/.gitignore

@@ -1,13 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear

java-strings-3/src/test/resources/.gitignore

@@ -1,13 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear

java-strings-ops/README.md

@@ -3,10 +3,4 @@
 This module contains articles about operations on strings in Java.
 
 ### Relevant Articles:
-- [Comparing Strings in Java](https://www.baeldung.com/java-compare-strings)
-- [Check If a String Is Numeric in Java](https://www.baeldung.com/java-check-string-number)
-- [Get Substring from String in Java](https://www.baeldung.com/java-substring)
 - [Guide to Java String Pool](https://www.baeldung.com/java-string-pool)
-- [Split a String in Java](https://www.baeldung.com/java-split-string)
-- [Common String Operations in Java](https://www.baeldung.com/java-string-operations)
-- [Java toString() Method](https://www.baeldung.com/java-tostring)

java-strings/README.md

@@ -3,10 +3,8 @@
 This module contains articles about strings in Java.
 
 ### Relevant Articles:
-- [String Operations with Java Streams](https://www.baeldung.com/java-stream-operations-on-strings)
 - [Use char[] Array Over a String for Manipulating Passwords in Java?](https://www.baeldung.com/java-storing-passwords)
 - [Compact Strings in Java 9](https://www.baeldung.com/java-9-compact-string)
 - [String Not Empty Test Assertions in Java](https://www.baeldung.com/java-assert-string-not-empty)
 - [String Performance Hints](https://www.baeldung.com/java-string-performance)
-- [Adding a Newline Character to a String in Java](https://www.baeldung.com/java-string-newline)
 - More articles: [[next -->]](/java-strings-2)

javaxval/src/main/java/org/baeldung/javaxval/messageinterpolator/Person.java

@@ -0,0 +1,42 @@
+package org.baeldung.javaxval.messageinterpolator;
+
+import javax.validation.constraints.Email;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.Size;
+
+public class Person {
+
+    @Size(min = 10, max = 100, message = "Name should be between {min} and {max} characters")
+    private String name;
+
+    @Min(value = 18, message = "Age should not be less than {value}")
+    private int age;
+    
+    @Email(message = "Email address should be in a correct format: ${validatedValue}")
+    private String email;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+    
+    public String getEmail() {
+        return email;
+    }
+    
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+}

javaxval/src/test/java/org/baeldung/javaxval/messageinterpolator/ParameterMessageInterpolaterIntegrationTest.java

@@ -0,0 +1,70 @@
+package org.baeldung.javaxval.messageinterpolator;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Set;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.Validation;
+import javax.validation.Validator;
+import javax.validation.ValidatorFactory;
+
+import org.hibernate.validator.messageinterpolation.ParameterMessageInterpolator;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class ParameterMessageInterpolaterIntegrationTest {
+
+    private static Validator validator;
+
+    @BeforeClass
+    public static void beforeClass() {
+        ValidatorFactory validatorFactory = Validation.byDefaultProvider()
+          .configure()
+          .messageInterpolator(new ParameterMessageInterpolator())
+          .buildValidatorFactory();
+
+        validator = validatorFactory.getValidator();
+    }
+
+    @Test
+    public void givenNameLengthLessThanMin_whenValidate_thenValidationFails() {
+        Person person = new Person();
+        person.setName("John Doe");
+        person.setAge(18);
+
+        Set<ConstraintViolation<Person>> violations = validator.validate(person);
+        assertEquals(1, violations.size());
+
+        ConstraintViolation<Person> violation = violations.iterator().next();
+        assertEquals("Name should be between 10 and 100 characters", violation.getMessage());
+    }
+
+    @Test
+    public void givenAgeIsLessThanMin_whenValidate_thenValidationFails() {
+        Person person = new Person();
+        person.setName("John Stephaner Doe");
+        person.setAge(16);
+
+        Set<ConstraintViolation<Person>> violations = validator.validate(person);
+        assertEquals(1, violations.size());
+
+        ConstraintViolation<Person> violation = violations.iterator().next();
+        assertEquals("Age should not be less than 18", violation.getMessage());
+    }
+    
+    @Test
+    public void givenEmailIsMalformed_whenValidate_thenValidationFails() {
+        Person person = new Person();
+        person.setName("John Stephaner Doe");
+        person.setAge(18);
+        person.setEmail("johndoe.dev");
+        
+        Set<ConstraintViolation<Person>> violations = validator.validate(person);
+        assertEquals(1, violations.size());
+        
+        ConstraintViolation<Person> violation = violations.iterator().next();
+        assertEquals("Email address should be in a correct format: ${validatedValue}", violation.getMessage());
+    }
+
+}

jee-kotlin/pom.xml

@@ -230,7 +230,7 @@
             </build>
         </profile>
         <profile>
-            <id>wildfly-remote-arquillian</id>
+            <id>wildfly-remote-arquillian-disabled</id>
             <dependencies>
                 <dependency>
                     <groupId>org.jboss.resteasy</groupId>

jta/pom.xml

@@ -30,12 +30,6 @@
             <artifactId>spring-boot-starter</artifactId>
         </dependency>
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.hsqldb</groupId>
             <artifactId>hsqldb</artifactId>

libraries-data-io/src/main/resources/csv/twoColumn.csv

@@ -0,0 +1,5 @@
+colA, ColB
+A, B
+C, D
+G, G
+G, F

libraries-testing/pom.xml

@@ -125,19 +125,6 @@
 			<version>${java-hamcrest.version}</version>
 			<scope>test</scope>
 		</dependency>
-
-		<dependency>
-			<groupId>net.serenity-bdd</groupId>
-			<artifactId>serenity-core</artifactId>
-			<version>${serenity.version}</version>
-			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>org.asciidoctor</groupId>
-					<artifactId>asciidoctorj</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
 		<dependency>
 			<groupId>org.asciidoctor</groupId>
 			<artifactId>asciidoctor-maven-plugin</artifactId>

parent-boot-2/pom.xml

@@ -78,6 +78,6 @@
         <rest-assured.version>3.3.0</rest-assured.version>
         <!-- plugins -->
         <thin.version>1.0.22.RELEASE</thin.version>
-        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
+        <spring-boot.version>2.1.9.RELEASE</spring-boot.version>
     </properties>
 </project>

parent-kotlin/pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 	<modelVersion>4.0.0</modelVersion>
 	<artifactId>parent-kotlin</artifactId>
 	<name>parent-kotlin</name>
@@ -13,34 +13,34 @@
 		<version>1.0.0-SNAPSHOT</version>
 	</parent>
 
-    <repositories>
-        <repository>
-            <id>jcenter</id>
-            <url>http://jcenter.bintray.com</url>
-        </repository>
-        <repository>
-            <id>kotlin-ktor</id>
-            <url>https://dl.bintray.com/kotlin/ktor/</url>
-        </repository>
-        <repository>
-            <id>kotlin-eap</id>
-            <url>http://dl.bintray.com/kotlin/kotlin-eap</url>
-        </repository>
-        <repository>
-            <id>spring-milestone</id>
-            <name>Spring Milestone Repository</name> 
-            <url>http://repo.spring.io/milestone</url> 
-        </repository>
-    </repositories>
-    
-    <pluginRepositories>
-        <pluginRepository>
-           <id>kotlin-eap</id>
-            <url>http://dl.bintray.com/kotlin/kotlin-eap</url>
-        </pluginRepository>
-    </pluginRepositories>
-    
-    <dependencyManagement>
+	<repositories>
+		<repository>
+			<id>jcenter</id>
+			<url>http://jcenter.bintray.com</url>
+		</repository>
+		<repository>
+			<id>kotlin-ktor</id>
+			<url>https://dl.bintray.com/kotlin/ktor/</url>
+		</repository>
+		<repository>
+			<id>kotlin-eap</id>
+			<url>http://dl.bintray.com/kotlin/kotlin-eap</url>
+		</repository>
+		<repository>
+			<id>spring-milestone</id>
+			<name>Spring Milestone Repository</name>
+			<url>http://repo.spring.io/milestone</url>
+		</repository>
+	</repositories>
+
+	<pluginRepositories>
+		<pluginRepository>
+			<id>kotlin-eap</id>
+			<url>http://dl.bintray.com/kotlin/kotlin-eap</url>
+		</pluginRepository>
+	</pluginRepositories>
+
+	<dependencyManagement>
 		<dependencies>
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
@@ -56,15 +56,15 @@
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-stdlib-jdk8</artifactId>
-			</dependency>
-		 <dependency>
-            <groupId>org.jetbrains.kotlin</groupId>
-            <artifactId>kotlin-stdlib</artifactId>
-            </dependency>
+		</dependency>
+		<dependency>
+			<groupId>org.jetbrains.kotlin</groupId>
+			<artifactId>kotlin-stdlib</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-reflect</artifactId>
-			</dependency>
+		</dependency>
 
 		<dependency>
 			<groupId>org.jetbrains.kotlinx</groupId>
@@ -113,9 +113,9 @@
 								<sourceDir>${project.basedir}/src/main/java</sourceDir>
 							</sourceDirs>
 							<jvmTarget>${java.version}</jvmTarget>
-                                                        <args>
-                                                            <arg>-Xjvm-default=enable</arg> 
-                                                        </args>
+							<args>
+								<arg>-Xjvm-default=enable</arg>
+							</args>
 						</configuration>
 					</execution>
 					<execution>

persistence-modules/spring-boot-persistence-h2/pom.xml

@@ -26,11 +26,6 @@
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>

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

@@ -17,14 +17,17 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring-boot.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-thymeleaf</artifactId>
+            <version>${spring-boot.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
+            <version>${spring-boot.version}</version>
             <exclusions>
                 <exclusion>
                     <groupId>com.zaxxer</groupId>
@@ -35,6 +38,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring-boot.version}</version>
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
@@ -99,6 +103,7 @@
         <validation-api.version>2.0.1.Final</validation-api.version>
         <derby.version>10.13.1.1</derby.version>
         <hsqldb.version>2.3.4</hsqldb.version>
+        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
     </properties>
 
 </project>

persistence-modules/spring-data-redis/pom.xml

@@ -87,7 +87,8 @@
                 <version>${maven-surefire-plugin.version}</version>
                 <configuration>
                     <verbose>true</verbose>
-                    <fork>true</fork>
+                    <fork>false</fork>
+                    <forkCount>0</forkCount>
                     <argLine>-Xmx1024m</argLine>
                 </configuration>
             </plugin>

persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisKeyCommandsIntegrationTest.java

@@ -38,7 +38,7 @@ public class RedisKeyCommandsIntegrationTest {
     
     @BeforeClass
     public static void startRedisServer() throws IOException {
-        redisServer = new RedisServerBuilder().port(6379).setting("maxheap 256M").build();
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 256M").build();
         redisServer.start();
     }
     

persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisTemplateListOpsIntegrationTest.java

@@ -36,7 +36,7 @@ public class RedisTemplateListOpsIntegrationTest {
     
     @BeforeClass
     public static void startRedisServer() throws IOException {
-        redisServer = new RedisServerBuilder().port(6379).setting("maxheap 128M").build();
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 128M").build();
         redisServer.start();
     }
     

persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisTemplateValueOpsIntegrationTest.java

@@ -38,7 +38,7 @@ public class RedisTemplateValueOpsIntegrationTest {
     
     @BeforeClass
     public static void startRedisServer() throws IOException {
-        redisServer = new RedisServerBuilder().port(6379).setting("maxheap 256M").build();
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 256M").build();
         redisServer.start();
     }
     

persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/redis/RedisMessageListenerIntegrationTest.java

@@ -33,7 +33,7 @@ public class RedisMessageListenerIntegrationTest {
     
     @BeforeClass
     public static void startRedisServer() throws IOException {
-        redisServer = new RedisServerBuilder().port(6379).setting("maxheap 256M").build();
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 256M").build();
         redisServer.start();
     }
     
@@ -46,7 +46,7 @@ public class RedisMessageListenerIntegrationTest {
     public void testOnMessage() throws Exception {
         String message = "Message " + UUID.randomUUID();
         redisMessagePublisher.publish(message);
-        Thread.sleep(100);
+        Thread.sleep(1000);
         assertTrue(RedisMessageSubscriber.messageList.get(0).contains(message));
     }
 }

persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/redis/repo/StudentRepositoryIntegrationTest.java

@@ -34,7 +34,7 @@ public class StudentRepositoryIntegrationTest {
     
     @BeforeClass
     public static void startRedisServer() throws IOException {
-        redisServer = new RedisServerBuilder().port(6379).setting("maxheap 128M").build();
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 128M").build();
         redisServer.start();
     }
     

persistence-modules/spring-data-redis/src/test/java/org/baeldung/SpringContextIntegrationTest.java

@@ -1,16 +1,35 @@
 package org.baeldung;
 
+import com.baeldung.spring.data.redis.config.RedisConfig;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import redis.embedded.RedisServerBuilder;
 
-import com.baeldung.spring.data.redis.config.RedisConfig;
+import static org.springframework.test.annotation.DirtiesContext.ClassMode.BEFORE_CLASS;
 
 @RunWith(SpringJUnit4ClassRunner.class)
+@DirtiesContext(classMode = BEFORE_CLASS)
 @ContextConfiguration(classes = RedisConfig.class)
 public class SpringContextIntegrationTest {
 
+    private static redis.embedded.RedisServer redisServer;
+
+    @BeforeClass
+    public static void startRedisServer() {
+        redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 256M").build();
+        redisServer.start();
+    }
+
+    @AfterClass
+    public static void stopRedisServer() {
+        redisServer.stop();
+    }
+
     @Test
     public void whenSpringContextIsBootstrapped_thenNoExceptions() {
     }

pom.xml

@@ -440,6 +440,8 @@
                 <module>core-java-modules/core-java-sun</module>
                 <module>core-java-modules/core-java-string-conversions</module>
                 <module>core-java-modules/core-java-string-conversions-2</module>
+                <module>core-java-modules/core-java-string-operations</module>
+                <module>core-java-modules/core-java-string-operations-2</module>
                 <module>core-java-modules/core-java-string-algorithms</module>
                 <module>core-java-modules/core-java-string-algorithms-2</module>
                 <module>core-java-modules/core-java-string-apis</module>
@@ -507,7 +509,6 @@
                 <module>java-spi</module>
                 <module>java-strings</module>
                 <module>java-strings-2</module>
-                <module>java-strings-3</module>
                 <module>java-strings-ops</module>
                 <module>java-vavr-stream</module>
                 <module>java-websocket</module>
@@ -1211,6 +1212,8 @@
                 <module>core-java-modules/core-java-sun</module>
                 <module>core-java-modules/core-java-string-conversions</module>
                 <module>core-java-modules/core-java-string-conversions-2</module>
+                <module>core-java-modules/core-java-string-operations</module>
+                <module>core-java-modules/core-java-string-operations-2</module>
                 <module>core-java-modules/core-java-string-algorithms</module>
                 <module>core-java-modules/core-java-string-algorithms-2</module>
                 <module>core-java-modules/core-java-string-apis</module>
@@ -1276,7 +1279,6 @@
                 <module>java-spi</module>
                 <module>java-strings</module>
                 <module>java-strings-2</module>
-                <module>java-strings-3</module>
                 <module>java-strings-ops</module>
                 <module>java-vavr-stream</module>
                 <module>java-websocket</module>

spring-5-data-reactive/src/main/java/com/baeldung/r2dbc/configuration/R2DBCConfiguration.java

@@ -8,7 +8,7 @@ import org.springframework.data.r2dbc.config.AbstractR2dbcConfiguration;
 import org.springframework.data.r2dbc.repository.config.EnableR2dbcRepositories;
 
 @Configuration
-//@EnableR2dbcRepositories(basePackages = "com.baeldung.r2dbc.repository")
+@EnableR2dbcRepositories(basePackages = "com.baeldung.r2dbc.repository")
 public class R2DBCConfiguration extends AbstractR2dbcConfiguration {
     @Bean
     public H2ConnectionFactory connectionFactory() {

spring-5-data-reactive/src/main/java/com/baeldung/r2dbc/model/Player.java

@@ -4,10 +4,12 @@ import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Table;
 
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
+@Table
 public class Player {
     @Id
     Integer id;

spring-5-data-reactive/src/test/java/com/baeldung/r2dbc/R2dbcApplicationIntegrationTest.java

@@ -111,12 +111,12 @@ public class R2dbcApplicationIntegrationTest {
 
     private void insertPlayers() {
         List<Player> players = Arrays.asList(
-                new Player(1, "Kaka", 37),
-                new Player(2, "Messi", 32),
-                new Player(3, "Mbappé", 20),
-                new Player(4, "CR7", 34),
-                new Player(5, "Lewandowski", 30),
-                new Player(6, "Cavani", 32)
+                new Player(null, "Kaka", 37),
+                new Player(null, "Messi", 32),
+                new Player(null, "Mbappé", 20),
+                new Player(null, "CR7", 34),
+                new Player(null, "Lewandowski", 30),
+                new Player(null, "Cavani", 32)
         );
 
         playerRepository.saveAll(players).subscribe();

spring-5-mvc/pom.xml

@@ -46,14 +46,17 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib-jre8</artifactId>
+            <version>${kotlin.version}</version>
         </dependency>
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-reflect</artifactId>
+            <version>${kotlin.version}</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.module</groupId>
             <artifactId>jackson-module-kotlin</artifactId>
+            <version>${jackson.version}</version>
         </dependency>
         <!-- runtime and test scoped -->
         <dependency>
@@ -170,7 +173,8 @@
 
     <properties>
         <jayway-rest-assured.version>2.9.0</jayway-rest-assured.version>
-        <kotlin.version>1.1.2</kotlin.version>
+        <jackson.version>2.9.9</jackson.version> <!-- Same as spring-boot-dependencies:2.1.7.RELEASE -->
+        <kotlin.version>1.2.71</kotlin.version> <!-- Same as spring-boot-dependencies:2.1.7.RELEASE -->
         <start-class>com.baeldung.Spring5Application</start-class>
         <httpclient.version>4.5.8</httpclient.version>
     </properties>

spring-5-security-oauth/src/main/java/com/baeldung/oauth2/LoginController.java

@@ -71,5 +71,4 @@ public class LoginController {
 
         return "loginSuccess";
     }
-
 }

spring-5-webflux/pom.xml

@@ -99,6 +99,6 @@
     </pluginRepositories>
 
     <properties>
-        <spring-boot.version>2.2.0.M3</spring-boot.version>
+        <spring-boot.version>2.2.0.RELEASE</spring-boot.version>
     </properties>
 </project>

spring-5-webflux/src/main/java/com/baeldung/spring/rsocket/client/ClientConfiguration.java

@@ -25,6 +25,6 @@ public class ClientConfiguration {
 
     @Bean
     RSocketRequester rSocketRequester(RSocketStrategies rSocketStrategies) {
-        return RSocketRequester.wrap(rSocket(), MimeTypeUtils.APPLICATION_JSON, rSocketStrategies);
+        return RSocketRequester.wrap(rSocket(), MimeTypeUtils.APPLICATION_JSON, MimeTypeUtils.APPLICATION_JSON, rSocketStrategies);
     }
 }

spring-5-webflux/src/test/java/com/baeldung/spring/rsocket/client/MarketDataRestControllerIntegrationTest.java

@@ -13,7 +13,6 @@ import org.springframework.boot.test.autoconfigure.web.reactive.WebFluxTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.messaging.rsocket.RSocketRequester;
 import org.springframework.messaging.rsocket.RSocketRequester.RequestSpec;
-import org.springframework.messaging.rsocket.RSocketRequester.ResponseSpec;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.test.web.reactive.server.FluxExchangeResult;
 import org.springframework.test.web.reactive.server.WebTestClient;
@@ -34,15 +33,12 @@ public class MarketDataRestControllerIntegrationTest {
     @Mock
     private RequestSpec requestSpec;
 
-    @Mock
-    private ResponseSpec responseSpec;
-
     @Test
     public void whenInitiatesRequest_ThenGetsResponse() throws Exception {
         when(rSocketRequester.route("currentMarketData")).thenReturn(requestSpec);
-        when(requestSpec.data(any())).thenReturn(responseSpec);
+        when(requestSpec.data(any())).thenReturn(requestSpec);
         MarketData marketData = new MarketData("X", 1);
-        when(responseSpec.retrieveMono(MarketData.class)).thenReturn(Mono.just(marketData));
+        when(requestSpec.retrieveMono(MarketData.class)).thenReturn(Mono.just(marketData));
 
         testClient.get()
                   .uri("/current/{stock}", "X")
@@ -56,8 +52,8 @@ public class MarketDataRestControllerIntegrationTest {
     @Test
     public void whenInitiatesFireAndForget_ThenGetsNoResponse() throws Exception {
         when(rSocketRequester.route("collectMarketData")).thenReturn(requestSpec);
-        when(requestSpec.data(any())).thenReturn(responseSpec);
-        when(responseSpec.send()).thenReturn(Mono.empty());
+        when(requestSpec.data(any())).thenReturn(requestSpec);
+        when(requestSpec.send()).thenReturn(Mono.empty());
 
         testClient.get()
                   .uri("/collect")
@@ -70,10 +66,10 @@ public class MarketDataRestControllerIntegrationTest {
     @Test
     public void whenInitiatesRequest_ThenGetsStream() throws Exception {
         when(rSocketRequester.route("feedMarketData")).thenReturn(requestSpec);
-        when(requestSpec.data(any())).thenReturn(responseSpec);
+        when(requestSpec.data(any())).thenReturn(requestSpec);
         MarketData firstMarketData = new MarketData("X", 1);
         MarketData secondMarketData = new MarketData("X", 2);
-        when(responseSpec.retrieveFlux(MarketData.class)).thenReturn(Flux.just(firstMarketData, secondMarketData));
+        when(requestSpec.retrieveFlux(MarketData.class)).thenReturn(Flux.just(firstMarketData, secondMarketData));
 
         FluxExchangeResult<MarketData> result = testClient.get()
                                                           .uri("/feed/{stock}", "X")
@@ -89,4 +85,4 @@ public class MarketDataRestControllerIntegrationTest {
                     .thenCancel()
                     .verify();
     }
-}
+}