Prepare compiling and testing for Java 23

platforms/core-runtime/java-language-extensions/src/main/java/org/gradle/api/JavaVersion.java

@@ -113,11 +113,9 @@ public enum JavaVersion {
 
     /**
      * Java 23 major version.
-     * Not officially supported by Gradle. Use at your own risk.
      *
      * @since 7.6
      */
-    @Incubating
     VERSION_23,
 
     /**
@@ -147,6 +145,15 @@ public enum JavaVersion {
     @Incubating
     VERSION_26,
 
+    /**
+     * Java 27 major version.
+     * Not officially supported by Gradle. Use at your own risk.
+     *
+     * @since 8.9
+     */
+    @Incubating
+    VERSION_27,
+
     /**
      * Higher version of Java.
      * @since 4.7

platforms/core-runtime/java-language-extensions/src/test/groovy/org/gradle/api/JavaVersionSpec.groovy

@@ -61,7 +61,8 @@ class JavaVersionSpec extends Specification {
         JavaVersion.VERSION_24.toString() == "24"
         JavaVersion.VERSION_25.toString() == "25"
         JavaVersion.VERSION_26.toString() == "26"
-        JavaVersion.VERSION_HIGHER.toString() == "27"
+        JavaVersion.VERSION_27.toString() == "27"
+        JavaVersion.VERSION_HIGHER.toString() == "28"
     }
 
     def convertsStringToVersion() {
@@ -130,6 +131,7 @@ class JavaVersionSpec extends Specification {
         JavaVersion.forClassVersion(68) == JavaVersion.VERSION_24
         JavaVersion.forClassVersion(69) == JavaVersion.VERSION_25
         JavaVersion.forClassVersion(70) == JavaVersion.VERSION_26
+        JavaVersion.forClassVersion(71) == JavaVersion.VERSION_27
         JavaVersion.forClassVersion(999) == JavaVersion.VERSION_HIGHER
     }
 

platforms/documentation/docs/src/docs/userguide/releases/upgrading/upgrading_version_8.adoc

@@ -44,6 +44,10 @@ The previous step will help you identify potential problems by issuing deprecati
 
 The embedded Kotlin has been updated from 1.9.22 to link:https://github.com/JetBrains/kotlin/releases/tag/v1.9.23[Kotlin 1.9.23].
 
+==== Upgrade to JaCoCo 0.8.12
+
+JaCoCo has been updated to https://www.jacoco.org/jacoco/trunk/doc/changes.html[0.8.12].
+
 [[changes_8.8]]
 == Upgrading from 8.7 and earlier
 

platforms/jvm/jacoco/src/main/java/org/gradle/testing/jacoco/plugins/JacocoPlugin.java

@@ -70,7 +70,7 @@ public abstract class JacocoPlugin implements Plugin<Project> {
      *
      * @since 3.4
      */
-    public static final String DEFAULT_JACOCO_VERSION = "0.8.11";
+    public static final String DEFAULT_JACOCO_VERSION = "0.8.12";
     public static final String AGENT_CONFIGURATION_NAME = "jacocoAgent";
     public static final String ANT_CONFIGURATION_NAME = "jacocoAnt";
     public static final String PLUGIN_EXTENSION_NAME = "jacoco";

platforms/jvm/jacoco/src/testFixtures/groovy/org/gradle/testing/jacoco/plugins/fixtures/JacocoCoverage.groovy

@@ -27,6 +27,7 @@ final class JacocoCoverage {
     // Order matters here, as we want to test the latest version first
     // Relies on Groovy keeping the order of the keys in a map literal
     private static final Map<JavaVersion, JacocoVersion> JDK_CUTOFFS = [
+        (JavaVersion.VERSION_23): JacocoVersion.SUPPORTS_JDK_23,
         (JavaVersion.VERSION_21): JacocoVersion.SUPPORTS_JDK_21,
         (JavaVersion.VERSION_20): JacocoVersion.SUPPORTS_JDK_20,
         (JavaVersion.VERSION_18): JacocoVersion.SUPPORTS_JDK_18,
@@ -61,6 +62,7 @@ final class JacocoCoverage {
         static final SUPPORTS_JDK_18 = new JacocoVersion(0, 8, 8)
         static final SUPPORTS_JDK_20 = new JacocoVersion(0, 8, 9)
         static final SUPPORTS_JDK_21 = new JacocoVersion(0, 8, 11)
+        static final SUPPORTS_JDK_23 = new JacocoVersion(0, 8, 12)
 
         private final int major
         private final int minor

platforms/jvm/plugins-java/src/integTest/groovy/org/gradle/java/JavaCrossCompilationIntegrationTest.groovy

@@ -34,7 +34,7 @@ import static org.gradle.internal.serialize.JavaClassUtil.getClassMajorVersion
 class JavaCrossCompilationIntegrationTest extends AbstractIntegrationSpec {
 
     static List<String> javaVersionsToCrossCompileAgainst() {
-        return ["1.6", "1.7", "1.8", "11", "15", "16", "17", "18", "19", "20", "21", "22"]
+        return ["1.6", "1.7", "1.8", "11", "15", "16", "17", "18", "19", "20", "21", "22", "23"]
     }
 
     static JavaVersion toJavaVersion(String version) {

platforms/jvm/scala/src/integTest/groovy/org/gradle/scala/compile/ScalaCompileJavaToolchainIntegrationTest.groovy

@@ -145,7 +145,7 @@ class ScalaCompileJavaToolchainIntegrationTest1 extends AbstractScalaCompileJava
         JavaVersion.forClass(classFile("scala", "test", "ScalaTest.class").bytes) == JavaVersion.VERSION_1_8
 
         where:
-        javaVersion << JavaVersion.values().findAll { JavaVersion.VERSION_1_8 <= it && it <= JavaVersion.VERSION_22 }
+        javaVersion << JavaVersion.values().findAll { JavaVersion.VERSION_1_8 <= it && it <= JavaVersion.VERSION_23 }
     }
 }