Add CI for Java 25

Closes gh-46907

Author: wilkinsona

.github/workflows/ci.yml

@@ -25,6 +25,9 @@ jobs:
             toolchain: false
           - version: 24
             toolchain: true
+          - version: 25
+            early-access: true
+            toolchain: true
         exclude:
           - os:
               name: Linux

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java

@@ -33,6 +33,9 @@ private GradleVersions() {
 	}
 
 	public static List<String> allCompatible() {
+		if (isJavaVersion(JavaVersion.VERSION_25)) {
+			return Arrays.asList("9.0.0", "9.1.0-rc-1");
+		}
 		if (isJavaVersion(JavaVersion.VERSION_24)) {
 			return Arrays.asList(GradleVersion.current().getVersion(), "9.0.0", "9.1.0-rc-1");
 		}

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/java/org/springframework/boot/maven/JarIntegrationTests.java

@@ -26,6 +26,8 @@
 import java.util.jar.JarFile;
 
 import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.condition.DisabledForJreRange;
+import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.api.extension.ExtendWith;
 
 import org.springframework.boot.loader.tools.JarModeLibrary;
@@ -323,6 +325,8 @@ void whenADependencyHasTestScopeItIsNotIncludedInTheRepackagedJar(MavenBuild mav
 	}
 
 	@TestTemplate
+	@DisabledForJreRange(min = JRE.JAVA_25) // Kotlin Maven integration does not support
+											// Java 25
 	void whenAProjectUsesKotlinItsModuleMetadataIsRepackagedIntoBootInfClasses(MavenBuild mavenBuild) {
 		mavenBuild.project("jar-with-kotlin-module").execute((project) -> {
 			File main = new File(project, "target/jar-with-kotlin-module-0.0.1.BUILD-SNAPSHOT.jar");

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/StaticResourceJarsTests.java

@@ -29,6 +29,8 @@
 import java.util.jar.JarOutputStream;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledForJreRange;
+import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.api.io.TempDir;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -75,6 +77,7 @@ void excludeJarWithoutStaticResources() throws Exception {
 	}
 
 	@Test
+	@DisabledForJreRange(min = JRE.JAVA_25) // Requires -Djdk.net.file.ftpfallback=true
 	void uncPathsAreTolerated() throws Exception {
 		File jarFile = createResourcesJar("test-resources.jar");
 		List<URL> staticResourceJarUrls = new StaticResourceJars().getUrlsFrom(jarFile.toURI().toURL(),