Class<?> optionalClass = Class.forName("java.util.Optional");
        /*
         * We don't *need* to use reflection to access Optional: It's available on all JDKs we
         * support, and Android code won't get this far, anyway, because ProcessHandle is
         * unavailable. But given how much other reflection we're using, we might as well use it

 * in the Maven configuration.
 * </p>
 *
 * <p>
 * The following are key functionalities provided by the Toolchain interface:</p><ul>
 *   <li>Access to the type of the toolchain (e.g., JDK, compiler).</li>
 *   <li>Retrieval of the specific version of the toolchain.</li>
 *   <li>Configuration of toolchain properties to match the project's requirements.</li>
 * </ul>
 *
 * <p>Example usage:</p>
 * <pre>

if ERRORLEVEL 1 (
    echo Error: Apache Maven 4.x requires Java 17 or newer to run. >&2
    "%JAVACMD%" -version >&2
    echo Please upgrade your Java installation or set JAVA_HOME to point to a compatible JDK. >&2
    goto error
)

:chkMHome
set "MAVEN_HOME=%~dp0"
set "MAVEN_HOME=%MAVEN_HOME:~0,-5%"
if "%MAVEN_HOME%"=="" goto error

:checkMCmd
if not exist "%MAVEN_HOME%\bin\mvn.cmd" goto error

# - Visual Studio 2022 Build Tools
# - MSVC 14.39
# - LLVM/Clang 18.1.4
# - MSYS2 + curl, git, patch, vim, unzip, zip
# - Python 3.9 - 3.14
# - Bazelisk 1.22.1
# - JDK 21 (Azul Zulu)

FROM mcr.microsoft.com/windows/servercore:ltsc2022

SHELL ["powershell.exe", "-ExecutionPolicy", "Bypass", "-Command", \

   * Comparable<? super E>} in order to accommodate users of obsolete javac versions affected by <a
   * href="https://bugs.openjdk.org/browse/JDK-6468354">JDK-6468354</a>.
   */
  public static <E extends Comparable<?>> Builder<E> reverseOrder() {
    return new Builder<>(Ordering.<E>natural().reverse());
  }

  /**

fun <reified T : ComponentMetadataRule> ComponentMetadataHandler.applyRule(module: String, vararg modulesToRemove: Any) {
    withModule<T>(module) {
        params(*modulesToRemove)
    }
}


/**
 * The JDK now provides these.
 */
abstract class RemoveXmlApisRule : ComponentMetadataRule {
    override fun execute(context: ComponentMetadataContext) {
        context.details.allVariants {
            withDependencies {

        findLatest("junit-jupiter", "org.junit.jupiter:junit-jupiter-api:[5,)", versionProperties)
        findLatest("testng", "org.testng:testng:[6.0,7.6.0)", versionProperties) // TestNG 7.6.0 and above require JDK 11; see https://groups.google.com/g/testng-users/c/BAFB1vk-kok
        findLatest("slf4j", "org.slf4j:slf4j-api:[2.0.17,)", versionProperties)

                );
            }
        }
    }

    public void testLocalBwcArchives() {
        for (Platform platform : Platform.values()) {
            // note: no non bundled jdk for bwc
            String configName = projectName(platform.toString(), true);
            configName += (platform == Platform.WINDOWS ? "-zip" : "-tar");

   * of Java 20, it always throws an exception, and as of Java 26, the method does not even exist.
   * For now, we continue using it to clean up under older JDKs.
   *
   * Our usages should at least be *relatively* safe: Typically, threads started by a test are dying
   * at the end of the test, so there is no object state put at risk by stopping the threads

	set JVM_DLL=\bin\server\jvm.dll
	goto foundJVM
)

rem Fallback to 'client' JRE
if exist "%JAVA_HOME%"\bin\client\jvm.dll (
	set JVM_DLL=\bin\client\jvm.dll
	echo Warning: JAVA_HOME points to a JRE and not JDK installation; a client (not a server^) JVM will be used...
) else (
	echo JAVA_HOME points to an invalid Java installation (no jvm.dll found in "%JAVA_HOME%"^). Exiting...
	goto:eof
)

:foundJVM