build: upgrade jdk 25 and gradle 9

.github/workflows/build.yml

@@ -17,12 +17,18 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up JDK
+      - name: Set up Java 8 test runtime
         uses: actions/setup-java@v3
         with:
           java-version: '8'
           distribution: 'corretto'
 
+      - name: Set up JDK 25
+        uses: actions/setup-java@v3
+        with:
+          java-version: '25'
+          distribution: 'corretto'
+
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
 
@@ -40,4 +46,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: libs
-          path: build/libs
+          path: build/libs

.github/workflows/release.yml

@@ -22,12 +22,18 @@ jobs:
             exit 1
           fi
 
-      - name: Set up JDK
+      - name: Set up Java 8 test runtime
         uses: actions/setup-java@v3
         with:
           java-version: '8'
           distribution: 'corretto'
 
+      - name: Set up JDK 25
+        uses: actions/setup-java@v3
+        with:
+          java-version: '25'
+          distribution: 'corretto'
+
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
 

README.md

@@ -911,8 +911,9 @@ For deeper design notes, see:
 
 ## Build And Test
 
-The project currently compiles for Java 8 source/target compatibility and uses
-JUnit 5 for tests. Build and test with a JDK that can run Gradle 8.4.
+The project publishes Java 8-compatible bytecode, runs Gradle on JDK 25, and
+executes tests on a Java 8 toolchain. If Java 8 is not installed locally, Gradle
+can provision it through the configured Foojay toolchain resolver.
 
 Run the full CI-style verification command:
 

build.gradle

@@ -8,12 +8,15 @@ plugins {
     id 'java'
     id 'maven-publish'
     id 'signing'
-    id 'org.jreleaser' version '1.13.1'
+    id 'org.jreleaser' version '1.24.0'
 }
 
 group = "blue.language"
 version = determineProjectVersion()
-archivesBaseName = "blue-language-java"
+
+base {
+    archivesName = "blue-language-java"
+}
 
 repositories {
     if (!System.getenv('CI')) {
@@ -25,16 +28,13 @@ repositories {
 java {
     withJavadocJar()
     withSourcesJar()
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
 
-sourceCompatibility = JavaVersion.VERSION_1_8
-targetCompatibility = JavaVersion.VERSION_1_8
-
 tasks.withType(JavaCompile).configureEach {
     options.encoding = 'UTF-8'
-    if (JavaVersion.current().isJava9Compatible()) {
-        options.release = 8
-    }
+    options.release = 8
 }
 
 compileTestJava {
@@ -65,6 +65,9 @@ dependencies {
 }
 
 test {
+    javaLauncher = javaToolchains.launcherFor {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
     useJUnitPlatform()
     reports {
         junitXml.required = false

gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.java.installations.auto-download=true
+org.gradle.java.installations.fromEnv=JAVA_HOME_8_X64,JAVA_HOME_8_ARM64,JAVA8_HOME

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,9 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.0-bin.zip
+networkTimeout=10000
+retries=0
+retryBackOffMs=500
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists