Add support for Java 25

Closes gh-1912

Author: mhalbritter

start-site/src/main/java/io/spring/start/site/project/JavaVersionProjectDescriptionCustomizer.java

@@ -37,10 +37,12 @@
  */
 public class JavaVersionProjectDescriptionCustomizer implements ProjectDescriptionCustomizer {
 
-	private static final VersionRange SPRING_BOOT_3_4_OR_LATER = VersionParser.DEFAULT.parseRange("3.4.0");
+	private static final VersionRange SPRING_BOOT_3_5_OR_LATER = VersionParser.DEFAULT.parseRange("3.5.0");
 
 	private static final List<String> UNSUPPORTED_VERSIONS = Arrays.asList("1.6", "1.7", "1.8");
 
+	private static final int MAX_JAVA_VERSION = 25;
+
 	@Override
 	public void customize(MutableProjectDescription description) {
 		String javaVersion = description.getLanguage().jvmVersion();
@@ -61,11 +63,11 @@ public void customize(MutableProjectDescription description) {
 				updateTo(description, "21");
 			}
 		}
-		if (javaGeneration >= 24) {
-			// Spring Boot < 3.4.x supports Java 23 at most
+		if (javaGeneration >= 25) {
+			// Spring Boot < 3.5.x supports Java 24 at most
 			Version platformVersion = description.getPlatformVersion();
-			if (!SPRING_BOOT_3_4_OR_LATER.match(platformVersion)) {
-				updateTo(description, "23");
+			if (!SPRING_BOOT_3_5_OR_LATER.match(platformVersion)) {
+				updateTo(description, "24");
 			}
 		}
 	}
@@ -82,7 +84,7 @@ private void updateTo(MutableProjectDescription description, String jvmVersion)
 	private Integer determineJavaGeneration(String javaVersion) {
 		try {
 			int generation = Integer.parseInt(javaVersion);
-			return (generation > 9 && generation <= 24) ? generation : null;
+			return (generation >= 9 && generation <= MAX_JAVA_VERSION) ? generation : null;
 		}
 		catch (NumberFormatException ex) {
 			return null;

start-site/src/main/resources/application.yml

@@ -2039,7 +2039,7 @@ initializr:
       id: war
       default: false
   javaVersions:
-    - id: 24
+    - id: 25
       default: false
     - id: 21
       default: false

start-site/src/test/java/io/spring/start/site/project/JavaVersionProjectDescriptionCustomizerTests.java

@@ -76,8 +76,8 @@ void java23IsNotSupportedWithKotlin() {
 	}
 
 	@Test
-	void java24IsNotSupportedWithKotlin() {
-		assertThat(mavenPom(kotlinProject("24", SupportedBootVersion.latest().getVersion())))
+	void java25IsNotSupportedWithKotlin() {
+		assertThat(mavenPom(kotlinProject("25", SupportedBootVersion.latest().getVersion())))
 			.hasProperty("java.version", "21");
 	}
 
@@ -93,7 +93,7 @@ static Stream<Arguments> supportedGradleGroovyParameters() {
 	private static Stream<Arguments> supportedJavaParameters() {
 		return Stream.of(java("17", SupportedBootVersion.latest().getVersion()),
 				java("21", SupportedBootVersion.latest().getVersion()),
-				java("24", SupportedBootVersion.latest().getVersion()));
+				java("25", SupportedBootVersion.latest().getVersion()));
 	}
 
 	private static Stream<Arguments> supportedKotlinParameters() {
@@ -102,7 +102,7 @@ private static Stream<Arguments> supportedKotlinParameters() {
 
 	private static Stream<Arguments> supportedGroovyParameters() {
 		return Stream.of(groovy("21", SupportedBootVersion.latest().getVersion()),
-				groovy("24", SupportedBootVersion.latest().getVersion()));
+				groovy("25", SupportedBootVersion.latest().getVersion()));
 	}
 
 	private static Arguments java(String javaVersion, String springBootVersion) {