BAEL-9305: Does Spring @Transactional Attribute Work on a Private Method?

core-java-modules/core-java-arrays-operations-basic-3/src/test/java/com/baeldung/signchanges/SignChangesInAnArrayUnitTest.java

@@ -0,0 +1,63 @@
+package com.baeldung.signchanges;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.stream.IntStream;
+
+public class SignChangesInAnArrayUnitTest {
+
+    int[] sampleArray = {1, -2, -3, 4, 0, -1, 5};
+
+    int countSignChanges(int[] arr) {
+        if (arr == null || arr.length < 2) {
+            return 0;
+        }
+        int count = 0;
+
+        int prevSign = Integer.signum(arr[0]);
+
+        for (int i = 1; i < arr.length; i++) {
+            int currentSign = Integer.signum(arr[i]);
+
+            if (currentSign != 0 && prevSign != 0 && currentSign != prevSign) {
+                count++;
+            }
+
+            if (currentSign != 0) {
+                prevSign = currentSign;
+            }
+        }
+
+        return count;
+    }
+
+    @Test
+    void givenArray_whenExistsSignChanges_thenReturnSignChangesQuantity() {
+        int result = countSignChanges(sampleArray);
+        Assertions.assertThat(result).isEqualTo(4);
+    }
+
+    int countSignChangesStream(int[] arr) {
+        if (arr == null || arr.length < 2) {
+            return 0;
+        }
+
+        int[] signs = Arrays.stream(arr)
+            .map(Integer::signum)
+            .filter(s -> s != 0)
+            .toArray();
+
+        return (int) IntStream.range(1, signs.length)
+            .filter(i -> signs[i] != signs[i - 1])
+            .count();
+    }
+
+    @Test
+    void givenArray_whenUsingStreams_thenReturnSignChangesQuantity() {
+        int result = countSignChangesStream(sampleArray);
+        Assertions.assertThat(result).isEqualTo(4);
+    }
+
+}

core-java-modules/core-java-string-algorithms-5/src/main/java/com/baeldung/uniqueint/StringToUniqueInt.java

@@ -38,12 +38,12 @@ public static int toIntByMD5(String value) {
     }
 
     public static int toIntByLookup(String value) {
-        var found = lookupMap.get(value);
+        Integer found = lookupMap.get(value);
         if (found != null) {
             return found;
         }
 
-        var intValue = counter.incrementAndGet();
+        Integer intValue = counter.incrementAndGet();
         lookupMap.put(value, intValue);
         return intValue;
     }

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

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-swing</artifactId>
     <packaging>jar</packaging>
@@ -19,4 +19,8 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
+    <build>
+        <sourceDirectory>src/main/java</sourceDirectory>
+    </build>
+
 </project>

core-java-modules/core-java-swing/src/main/java/com/baeldung/clipboard/AwtClipboard.java

@@ -0,0 +1,39 @@
+package com.baeldung.clipboard;
+
+import java.awt.Toolkit;
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.StringSelection;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.IOException;
+import java.awt.datatransfer.DataFlavor;
+
+public class AwtClipboard {
+
+    public static void main(String[] args) throws IOException, UnsupportedFlavorException {
+        String textToCopy = "Baeldung helps developers explore the Java ecosystem and simply be better engineers.";
+        copyToClipboard(textToCopy);
+
+        String textCopied = copyFromClipboard();
+        if (textCopied != null) {
+            System.out.println(textCopied);
+        }
+    }
+
+    public static void copyToClipboard(String text) {
+        Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
+        StringSelection data = new StringSelection(text);
+        cb.setContents(data, null);
+    }
+
+    public static String copyFromClipboard() throws UnsupportedFlavorException, IOException {
+        Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
+        Transferable transferable = cb.getContents(null);
+        if (transferable.isDataFlavorSupported(DataFlavor.stringFlavor)) {
+            String data = (String) transferable.getTransferData(DataFlavor.stringFlavor);
+            return data;
+        }
+        System.out.println("Couldn't get data from the clipboard");
+        return null;
+    }
+}

libraries-2/pom.xml

@@ -13,11 +13,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>io.github.classgraph</groupId>
-            <artifactId>classgraph</artifactId>
-            <version>${classgraph.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.jbpm</groupId>
             <artifactId>jbpm-test</artifactId>
@@ -31,17 +26,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <dependency>
-            <groupId>edu.uci.ics</groupId>
-            <artifactId>crawler4j</artifactId>
-            <version>${crawler4j.version}</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.sleepycat</groupId>
-                    <artifactId>je</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
         <dependency>
             <groupId>com.github.jknack</groupId>
             <artifactId>handlebars</artifactId>
@@ -57,11 +41,6 @@
             <artifactId>je</artifactId>
             <version>${sleepycat-je.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.mapdb</groupId>
-            <artifactId>mapdb</artifactId>
-            <version>${mapdb.version}</version>
-        </dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -96,22 +75,51 @@
             <artifactId>value</artifactId>
             <version>${immutables.version}</version>
         </dependency>
-        <dependency>
-            <groupId>io.nats</groupId>
-            <artifactId>jnats</artifactId>
-            <version>${jnats.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.mutabilitydetector</groupId>
             <artifactId>MutabilityDetector</artifactId>
             <version>${mutabilitydetector.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>org.awaitility</groupId>
-            <artifactId>awaitility</artifactId>
-            <version>${awaitility.version}</version>
-            <scope>test</scope>
+            <groupId>com.squareup</groupId>
+            <artifactId>javapoet</artifactId>
+            <version>${javapoet.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.googlecode.libphonenumber</groupId>
+            <artifactId>libphonenumber</artifactId>
+            <version>${libphonenumber.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.javaparser</groupId>
+            <artifactId>javaparser-core</artifactId>
+            <version>${javaparser.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.core</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.java.core</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.java.sourcecode</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.soot-oss</groupId>
+            <artifactId>sootup.java.bytecode</artifactId>
+            <version>${sootup.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
         </dependency>
     </dependencies>
 
@@ -126,19 +134,18 @@
     </build>
 
     <properties>
-        <mapdb.version>3.0.8</mapdb.version>
-        <classgraph.version>4.8.153</classgraph.version>
         <jbpm.version>7.20.0.Final</jbpm.version>
-        <crawler4j.version>4.4.0</crawler4j.version>
         <handlebars.version>4.3.1</handlebars.version>
         <hsqldb.version>2.7.1</hsqldb.version>
         <mvel2.version>2.5.2.Final</mvel2.version>
         <sleepycat-je.version>18.3.12</sleepycat-je.version>
         <docker.version>3.0.14</docker.version>
         <immutables.version>2.5.6</immutables.version>
-        <jnats.version>2.17.3</jnats.version>
         <mutabilitydetector.version>0.9.6</mutabilitydetector.version>
-        <awaitility.version>4.2.1</awaitility.version>
+        <javapoet.version>1.10.0</javapoet.version>
+        <libphonenumber.version>8.12.9</libphonenumber.version>
+        <javaparser.version>3.25.10</javaparser.version>
+        <sootup.version>1.3.0</sootup.version>
     </properties>
 
 </project>

libraries/src/main/java/com/baeldung/javapoet/PersonGenerator.java → libraries-2/src/main/java/com/baeldung/javapoet/PersonGenerator.java

@@ -176,6 +176,7 @@ public void generateStudentClass() throws IOException {
     private void writeToOutputFile(String packageName, TypeSpec typeSpec) throws IOException {
         JavaFile javaFile = JavaFile
           .builder(packageName, typeSpec)
+          .skipJavaLangImports(true)
           .indent(FOUR_WHITESPACES)
           .build();
         javaFile.writeTo(outputFile);

libraries-4/src/test/java/com/baeldung/javaparser/AnalyzeUnitTest.java → libraries-2/src/test/java/com/baeldung/javaparser/AnalyzeUnitTest.java

@@ -1,5 +1,13 @@
 package com.baeldung.javaparser;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.ImportDeclaration;
@@ -9,13 +17,6 @@
 import com.github.javaparser.ast.body.MethodDeclaration;
 import com.github.javaparser.ast.visitor.GenericListVisitorAdapter;
 import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
-import org.junit.jupiter.api.Test;
-
-import java.util.Arrays;
-import java.util.List;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class AnalyzeUnitTest {
     private final String code = String.join("\n", Arrays.asList(

libraries-4/src/test/java/com/baeldung/javaparser/ManipulateUnitTest.java → libraries-2/src/test/java/com/baeldung/javaparser/ManipulateUnitTest.java

@@ -1,14 +1,15 @@
 package com.baeldung.javaparser;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+
+import org.junit.jupiter.api.Test;
+
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.body.MethodDeclaration;
 import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
-import org.junit.jupiter.api.Test;
-
-import java.util.Arrays;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class ManipulateUnitTest {
     private final String code = String.join("\n", Arrays.asList(

libraries-4/src/test/java/com/baeldung/javaparser/OutputUnitTest.java → libraries-2/src/test/java/com/baeldung/javaparser/OutputUnitTest.java

@@ -1,16 +1,17 @@
 package com.baeldung.javaparser;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+
+import org.junit.jupiter.api.Test;
+
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.printer.DefaultPrettyPrinterVisitor;
 import com.github.javaparser.printer.configuration.DefaultConfigurationOption;
 import com.github.javaparser.printer.configuration.DefaultPrinterConfiguration;
 import com.github.javaparser.printer.configuration.Indentation;
-import org.junit.jupiter.api.Test;
-
-import java.util.Arrays;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class OutputUnitTest {
     private final String code = String.join("\n", Arrays.asList(

libraries-4/src/test/java/com/baeldung/javaparser/ParseUnitTest.java → libraries-2/src/test/java/com/baeldung/javaparser/ParseUnitTest.java

@@ -1,14 +1,15 @@
 package com.baeldung.javaparser;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
 import com.github.javaparser.ParseProblemException;
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.expr.AnnotationExpr;
 import com.github.javaparser.ast.stmt.Statement;
-import org.junit.jupiter.api.Test;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
 
 public class ParseUnitTest {
     @Test

libraries/src/test/java/com/baeldung/javapoet/test/person/Person.java → libraries-2/src/test/java/com/baeldung/javapoet/test/person/Person.java

@@ -1,7 +1,5 @@
 package com.baeldung.javapoet.test.person;
 
-import java.lang.String;
-
 public interface Person {
     String DEFAULT_NAME = "Alice";
 

libraries/src/test/java/com/baeldung/javapoet/test/person/Student.java → libraries-2/src/test/java/com/baeldung/javapoet/test/person/Student.java

@@ -1,7 +1,5 @@
 package com.baeldung.javapoet.test.person;
 
-import java.lang.Override;
-import java.lang.String;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;