Fix failures in InstanceMainMethodsTests on Java 24

+ initialize project java24 "Two_Four"
+ create extension for EE JavaSE-24

See eclipse-jdt#553

org.eclipse.jdt.debug.tests/java24/Main1.java

@@ -0,0 +1,5 @@
+public class Main1 {
+	public static void main() {
+		System.out.println("test");
+	}
+}

org.eclipse.jdt.debug.tests/java24/Main2.java

@@ -0,0 +1,7 @@
+public class Main2 {
+
+	void main() {
+		System.out.println("test");
+	}
+
+}

org.eclipse.jdt.debug.tests/test plugin/org/eclipse/jdt/debug/testplugin/JavaProjectHelper.java

@@ -6,6 +6,10 @@
  *  which accompanies this distribution, and is available at
  *  https://www.eclipse.org/legal/epl-2.0/
  *
+ * This is an implementation of an early-draft specification developed under the Java
+ * Community Process (JCP) and is made available for testing and evaluation purposes
+ * only. The code is not compatible with any specification of the JCP.
+ *
  *  SPDX-License-Identifier: EPL-2.0
  *
  *  Contributors:
@@ -66,6 +70,7 @@ public class JavaProjectHelper {
 	public static final String JAVA_SE_16_EE_NAME = "JavaSE-16";
 	public static final String JAVA_SE_21_EE_NAME = "JavaSE-21";
 	public static final String JAVA_SE_23_EE_NAME = "JavaSE-23";
+	public static final String JAVA_SE_24_EE_NAME = "JavaSE-24";
 
 	/**
 	 * path to the test src for 'testprograms'
@@ -100,6 +105,10 @@ public class JavaProjectHelper {
 	 * path to the 23 test source
 	 */
 	public static final IPath TEST_23_SRC_DIR = new Path("java23");
+	/**
+	 * path to the 24 test source
+	 */
+	public static final IPath TEST_24_SRC_DIR = new Path("java24");
 
 	/**
 	 * path to the compiler error java file

org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/AbstractDebugTest.java

@@ -6,6 +6,10 @@
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
+ * This is an implementation of an early-draft specification developed under the Java
+ * Community Process (JCP) and is made available for testing and evaluation purposes
+ * only. The code is not compatible with any specification of the JCP.
+ *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
@@ -181,6 +185,7 @@ public abstract class AbstractDebugTest extends TestCase implements  IEvaluation
 	public static final String ONESIX_PROJECT_NAME = "One_Six";
 	public static final String TWENTYONE_PROJECT_NAME = "Two_One";
 	public static final String TWENTYTHREE_PROJECT_NAME = "Two_Three";
+	public static final String TWENTYFOUR_PROJECT_NAME = "Two_Four";
 	public static final String BOUND_JRE_PROJECT_NAME = "BoundJRE";
 	public static final String CLONE_SUFFIX = "Clone";
 
@@ -240,6 +245,7 @@ public abstract class AbstractDebugTest extends TestCase implements  IEvaluation
 	private static boolean loaded16_ = false;
 	private static boolean loaded21 = false;
 	private static boolean loaded23 = false;
+	private static boolean loaded24 = false;
 	private static boolean loadedEE = false;
 	private static boolean loadedJRE = false;
 	private static boolean loadedMulti = false;
@@ -653,6 +659,40 @@ synchronized void assert23Project() {
 		}
 	}
 
+	/**
+	 * Creates the Java 24 compliant project
+	 */
+	synchronized void assert24Project() {
+		IJavaProject jp = null;
+		ArrayList<ILaunchConfiguration> cfgs = new ArrayList<>(1);
+		try {
+			if (!loaded24) {
+				jp = createProject(TWENTYFOUR_PROJECT_NAME, JavaProjectHelper.TEST_24_SRC_DIR.toString(), JavaProjectHelper.JAVA_SE_24_EE_NAME, false);
+				jp.setOption(JavaCore.COMPILER_PB_ENABLE_PREVIEW_FEATURES, JavaCore.ENABLED);
+				jp.setOption(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_24);
+				jp.setOption(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_24);
+				cfgs.add(createLaunchConfiguration(jp, "Main1"));
+				cfgs.add(createLaunchConfiguration(jp, "Main2"));
+				cfgs.add(createLaunchConfiguration(jp, "Main21"));
+				loaded24 = true;
+				waitForBuild();
+				assertNoErrorMarkersExist(jp.getProject());
+			}
+		} catch (Exception e) {
+			try {
+				if (jp != null) {
+					jp.getProject().delete(true, true, null);
+					for (int i = 0; i < cfgs.size(); i++) {
+						cfgs.get(i).delete();
+					}
+				}
+			} catch (CoreException ce) {
+				// ignore
+			}
+			handleProjectCreationException(e, TWENTYFOUR_PROJECT_NAME, jp);
+		}
+	}
+
 	/**
 	 * Creates the 'BoundJRE' project used for the JRE testing
 	 */
@@ -959,6 +999,16 @@ protected IJavaProject get23Project() {
 		return getJavaProject(TWENTYTHREE_PROJECT_NAME);
 	}
 
+	/**
+	 * Returns the 'Two_Four' project, used for Java 24 tests.
+	 *
+	 * @return the test project
+	 */
+	protected IJavaProject get24Project() {
+		assert24Project();
+		return getJavaProject(TWENTYFOUR_PROJECT_NAME);
+	}
+
 	/**
 	 * Returns the 'BoundJRE' project
 	 *

org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/launching/InstanceMainMethodsTests.java

@@ -6,6 +6,10 @@
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
+ * This is an implementation of an early-draft specification developed under the Java
+ * Community Process (JCP) and is made available for testing and evaluation purposes
+ * only. The code is not compatible with any specification of the JCP.
+ *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
@@ -26,7 +30,7 @@ public InstanceMainMethodsTests(String name) {
 
 	@Override
 	protected IJavaProject getProjectContext() {
-		return super.get23Project();
+		return super.get24Project();
 	}
 
 	public void testStaticMainWithoutArgs() throws Exception {

org.eclipse.jdt.launching/plugin.properties

@@ -5,6 +5,10 @@
 # are made available under the terms of the Eclipse Public License 2.0
 # which accompanies this distribution, and is available at
 # https://www.eclipse.org/legal/epl-2.0/
+#
+# This is an implementation of an early-draft specification developed under the Java
+# Community Process (JCP) and is made available for testing and evaluation purposes
+# only. The code is not compatible with any specification of the JCP.
 # 
 # SPDX-License-Identifier: EPL-2.0
 #
@@ -85,6 +89,7 @@ environment.description.24 = Java Platform, Standard Edition 20
 environment.description.25 = Java Platform, Standard Edition 21
 environment.description.26 = Java Platform, Standard Edition 22
 environment.description.27 = Java Platform, Standard Edition 23
+environment.description.28 = Java Platform, Standard Edition 24
 
 classpathVariableInitializer.deprecated = Use the JRE System Library instead
 

org.eclipse.jdt.launching/plugin.xml

@@ -7,6 +7,10 @@
      are made available under the terms of the Eclipse Public License 2.0
      which accompanies this distribution, and is available at
      https://www.eclipse.org/legal/epl-2.0/
+
+	This is an implementation of an early-draft specification developed under the Java
+	Community Process (JCP) and is made available for testing and evaluation purposes
+	only. The code is not compatible with any specification of the JCP.
      
  	 SPDX-License-Identifier: EPL-2.0
 
@@ -393,6 +397,11 @@
             id="JavaSE-23"
             compliance="23">
       </environment>
+      <environment
+            description="%environment.description.28"
+            id="JavaSE-24"
+            compliance="24">
+      </environment>
       <analyzer
             class="org.eclipse.jdt.internal.launching.environments.ExecutionEnvironmentAnalyzer"
             id="org.eclipse.jdt.launching.eeAnalyzer"/>