[20+] fix warning 'The constructor Locale is deprecated since version 20'

update/org.eclipse.update.configurator/.classpath

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="output" path="bin"/>

update/org.eclipse.update.configurator/.settings/org.eclipse.jdt.core.prefs

@@ -10,9 +10,9 @@ org.eclipse.jdt.core.compiler.annotation.nullable.secondary=
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=disabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=17
+org.eclipse.jdt.core.compiler.compliance=21
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -28,6 +28,7 @@ org.eclipse.jdt.core.compiler.problem.deprecationInDeprecatedCode=disabled
 org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod=disabled
 org.eclipse.jdt.core.compiler.problem.discouragedReference=warning
 org.eclipse.jdt.core.compiler.problem.emptyStatement=warning
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.explicitlyClosedAutoCloseable=warning
 org.eclipse.jdt.core.compiler.problem.fallthroughCase=ignore
@@ -84,6 +85,7 @@ org.eclipse.jdt.core.compiler.problem.redundantSpecificationOfTypeArguments=warn
 org.eclipse.jdt.core.compiler.problem.redundantSuperinterface=warning
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=ignore
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=warning
 org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
@@ -120,4 +122,5 @@ org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=error
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.source=17
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

update/org.eclipse.update.configurator/META-INF/MANIFEST.MF

@@ -12,7 +12,7 @@ Export-Package: org.eclipse.update.configurator,
 Require-Bundle: org.eclipse.equinox.common;bundle-version="[3.18.0,4.0.0)",
  org.eclipse.osgi;bundle-version="[3.2.0,4.0.0)",
  org.eclipse.core.runtime;bundle-version="3.29.0"
-Bundle-RequiredExecutionEnvironment: JavaSE-17
+Bundle-RequiredExecutionEnvironment: JavaSE-21
 Import-Package: javax.xml.parsers,
  org.w3c.dom,
  org.xml.sax,

update/org.eclipse.update.configurator/src/org/eclipse/update/internal/configurator/Utils.java

@@ -289,21 +289,21 @@
 		}
 		return false;
 	}
-	
+
 	public static Locale getDefaultLocale() {
 		String nl = getNL();
 		// sanity test
 		if (nl == null)
 			return Locale.getDefault();
-		
+
 		// break the string into tokens to get the Locale object
-		StringTokenizer locales = new StringTokenizer(nl,"_"); //$NON-NLS-1$
+		StringTokenizer locales = new StringTokenizer(nl, "_"); //$NON-NLS-1$
 		if (locales.countTokens() == 1)
-			return new Locale(locales.nextToken(), ""); //$NON-NLS-1$
+			return Locale.of(locales.nextToken());
 		else if (locales.countTokens() == 2)
-			return new Locale(locales.nextToken(), locales.nextToken());
+			return Locale.of(locales.nextToken(), locales.nextToken());
 		else if (locales.countTokens() == 3)
-			return new Locale(locales.nextToken(), locales.nextToken(), locales.nextToken());
+			return Locale.of(locales.nextToken(), locales.nextToken(), locales.nextToken());
 		else
 			return Locale.getDefault();
 	}
@@ -435,7 +435,7 @@
 			return location;
 		IPath relativePath = makeRelative(IPath.fromOSString(base.getPath()), locationPath);
 		try {
 			return new URL(base.getProtocol(), base.getHost(), base.getPort(), relativePath.toString());
 		} catch (MalformedURLException e) {
 			String message = e.getMessage();
 			if (message == null)
@@ -466,7 +466,7 @@
 	 */
 	public static String makeRelative(URL base, String absolute) {
 		try {
 			return makeRelative(base, new URL(absolute)).toExternalForm();
 		} catch (MalformedURLException e) {
 			// returns the original string if is invalid
 			return absolute;
@@ -480,7 +480,7 @@
 		if (!(isWindows && url.startsWith("file:"))) //$NON-NLS-1$
 			return url;
 		try {
 			String path = new URL(url).getPath();			
 			// normalize to not have leading / so we can check the form
 			File file = new File(path);
 			path = file.toString().replace('\\', '/');