Bump the min Gradle and Java requirements to 7.3 and 17

.github/workflows/changelog-print.yml

@@ -10,10 +10,9 @@ jobs:
     name: changelogPrint
     steps:
       - uses: actions/checkout@v4
-      - name: jdk 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: 'temurin'
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4

.github/workflows/ci.yml

@@ -23,11 +23,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Install JDK 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: "temurin"
-          java-version: 11
+          java-version: 21
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4
       - name: spotlessCheck
@@ -41,33 +40,25 @@ jobs:
       matrix:
         kind: [maven, gradle]
         # Test on the latest Java version once Gradle & Maven support it.
-        jre: [11, 17, 21, 24]
-        os: [ubuntu-latest]
+        jre: [17, 21, 24]
+        os: [ubuntu-latest, windows-latest]
         include:
-          # test windows at the diagonals of the above matrix
-          - kind: maven
-            jre: 11
-            os: windows-latest
-          - kind: gradle
-            jre: 17
-            os: windows-latest
           # npm on linux only (crazy slow on windows)
           - kind: npm
-            jre: 11
+            jre: 17
             os: ubuntu-latest
           - kind: shfmt
-            jre: 11
+            jre: 17
             os: ubuntu-latest
             shfmt-version: v3.8.0
           - kind: idea
-            jre: 11
+            jre: 17
             os: ubuntu-latest
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Install JDK ${{ matrix.distribution }} ${{ matrix.java_version }}
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: "temurin"
           java-version: ${{ matrix.jre }}

.github/workflows/deploy.yml

@@ -38,10 +38,9 @@ jobs:
       ORG_GRADLE_PROJECT_gpg_key64: ${{ secrets.GPG_KEY64 }}
     steps:
       - uses: actions/checkout@v4
-      - name: jdk 11
-        uses: actions/setup-java@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'temurin'
       - name: gradle caching
         uses: gradle/actions/setup-gradle@v4

gradle.properties

@@ -3,6 +3,7 @@ org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=1024m -Dfile.encoding=UTF-8
 org.gradle.parallel=true
 org.gradle.caching=true
 org.gradle.configuration-cache=true
+org.gradle.configuration-cache.parallel=true
 
 name=spotless
 description=Spotless - keep your code spotless with Gradle
@@ -32,4 +33,4 @@ VER_JGIT=6.10.1.202505221210-r
 VER_JUNIT=5.13.3
 VER_ASSERTJ=3.27.3
 VER_MOCKITO=5.18.0
-VER_SELFIE=2.5.3
+VER_SELFIE=2.5.3

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-rc-1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepTest.java

@@ -15,11 +15,8 @@
  */
 package com.diffplug.spotless.extra.cpp;
 
-import static org.junit.jupiter.api.condition.JRE.JAVA_17;
-
 import java.util.stream.Stream;
 
-import org.junit.jupiter.api.condition.EnabledForJreRange;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 
@@ -33,7 +30,6 @@ public EclipseCdtFormatterStepTest() {
 
 	@ParameterizedTest
 	@MethodSource
-	@EnabledForJreRange(min = JAVA_17)
 	void formatWithVersion(String version) throws Exception {
 		harnessFor(version).test("main.c",
 				"#include <a.h>;\nint main(int argc,   \nchar *argv[]) {}",

lib/build.gradle

@@ -1,3 +1,5 @@
+import org.gradle.util.GradleVersion
+
 plugins {
 	id 'java-library'
 	id 'io.github.davidburstrom.version-compatibility'
@@ -148,6 +150,11 @@ tasks.withType(Test).configureEach {
 		// https://docs.gradle.org/7.5/userguide/upgrading_version_7.html#removes_implicit_add_opens_for_test_workers
 		jvmArgs "--add-opens=java.base/java.lang=ALL-UNNAMED"
 	}
+
+	if (GradleVersion.current() >= GradleVersion.version('9.0')) {
+		// https://github.com/gradle/gradle/issues/33619
+		failOnNoDiscoveredTests = false
+	}
 }
 
 jar {

plugin-gradle/CHANGES.md

@@ -5,6 +5,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ## [Unreleased]
 
 ## Changed
+* Bump the min Gradle and Java requirements to `7.3` and `17`. ([#2540](https://github.com/diffplug/spotless/pull/2540))
 * Bump default `gson` version to latest `2.11.0` -> `2.13.1`. ([#2414](https://github.com/diffplug/spotless/pull/2414))
 * Bump default `jackson` version to latest `2.18.1` -> `2.19.1`. ([#2352](https://github.com/diffplug/spotless/pull/2352))
 * Bump default `gherkin-utils` version to latest `9.0.0` -> `9.2.0`. ([#2408](https://github.com/diffplug/spotless/pull/2408))

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/GroovyExtension.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 DiffPlug
+ * Copyright 2016-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,11 +18,8 @@
 import javax.inject.Inject;
 
 import org.gradle.api.GradleException;
-import org.gradle.api.internal.plugins.DslObject;
 import org.gradle.api.plugins.GroovyBasePlugin;
 import org.gradle.api.tasks.GroovySourceDirectorySet;
-import org.gradle.api.tasks.GroovySourceSet;
-import org.gradle.util.GradleVersion;
 
 import com.diffplug.spotless.generic.LicenseHeaderStep;
 
@@ -66,12 +63,7 @@ protected void setupTask(SpotlessTask task) {
 			target = getSources(getProject(),
 					message,
 					sourceSet -> {
-						if (GradleVersion.current().compareTo(GradleVersion.version(SpotlessPlugin.VER_GRADLE_javaPluginExtension)) >= 0) {
-							return sourceSet.getExtensions().getByType(GroovySourceDirectorySet.class);
-						} else {
-							final GroovySourceSet groovySourceSet = new DslObject(sourceSet).getConvention().getPlugin(GroovySourceSet.class);
-							return groovySourceSet.getGroovy();
-						}
+						return sourceSet.getExtensions().getByType(GroovySourceDirectorySet.class);
 					},
 					file -> {
 						final String name = file.getName();

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/JvmLang.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2023 DiffPlug
+ * Copyright 2023-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,31 +22,20 @@
 import org.gradle.api.Project;
 import org.gradle.api.file.FileCollection;
 import org.gradle.api.file.SourceDirectorySet;
-import org.gradle.api.plugins.JavaPluginConvention;
 import org.gradle.api.plugins.JavaPluginExtension;
 import org.gradle.api.specs.Spec;
 import org.gradle.api.tasks.SourceSet;
 import org.gradle.api.tasks.SourceSetContainer;
-import org.gradle.util.GradleVersion;
 
 interface JvmLang {
 
 	default FileCollection getSources(Project project, String message, Function<SourceSet, SourceDirectorySet> sourceSetSourceDirectory, Spec<? super File> filterSpec) {
-		final SourceSetContainer sourceSets;
 		FileCollection union = project.files();
-		if (GradleVersion.current().compareTo(GradleVersion.version(SpotlessPlugin.VER_GRADLE_javaPluginExtension)) >= 0) {
-			final JavaPluginExtension javaPluginExtension = project.getExtensions().findByType(JavaPluginExtension.class);
-			if (javaPluginExtension == null) {
-				throw new GradleException(message);
-			}
-			sourceSets = javaPluginExtension.getSourceSets();
-		} else {
-			final JavaPluginConvention javaPluginConvention = project.getConvention().findPlugin(JavaPluginConvention.class);
-			if (javaPluginConvention == null) {
-				throw new GradleException(message);
-			}
-			sourceSets = javaPluginConvention.getSourceSets();
+		final JavaPluginExtension javaPluginExtension = project.getExtensions().findByType(JavaPluginExtension.class);
+		if (javaPluginExtension == null) {
+			throw new GradleException(message);
 		}
+		final SourceSetContainer sourceSets = javaPluginExtension.getSourceSets();
 		for (SourceSet sourceSet : sourceSets) {
 			union = union.plus(sourceSetSourceDirectory.apply(sourceSet).filter(filterSpec));
 		}

plugin-gradle/src/main/java/com/diffplug/gradle/spotless/SpotlessPlugin.java

@@ -27,10 +27,9 @@
 
 public class SpotlessPlugin implements Plugin<Project> {
 	static final String SPOTLESS_MODERN = "spotlessModern";
-	static final String VER_GRADLE_min = "6.1.1";
-	static final String VER_GRADLE_javaPluginExtension = "7.1";
+	static final String VER_GRADLE_min = "7.3";
 	static final String VER_GRADLE_minVersionForCustom = "8.4";
-	private static final int MINIMUM_JRE = 11;
+	private static final int MINIMUM_JRE = 17;
 
 	@Override
 	public void apply(Project project) {

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/GradleIntegrationHarness.java

@@ -43,11 +43,14 @@
 
 public class GradleIntegrationHarness extends ResourceHarness {
 	public enum GradleVersionSupport {
-		JRE_11("5.0"), MINIMUM(SpotlessPlugin.VER_GRADLE_min), CUSTOM_STEPS(SpotlessPlugin.VER_GRADLE_minVersionForCustom),
-		// technically, this API exists in 6.5, but the flags for it change in 6.6, so we build to that
-		CONFIGURATION_CACHE("6.6"),
+		MINIMUM(SpotlessPlugin.VER_GRADLE_min),
+
 		// https://docs.gradle.org/7.5/userguide/configuration_cache.html#config_cache:stable
-		STABLE_CONFIGURATION_CACHE("7.5");
+		STABLE_CONFIGURATION_CACHE("7.5"),
+
+		CUSTOM_STEPS(SpotlessPlugin.VER_GRADLE_minVersionForCustom),
+
+		;
 
 		final String version;
 
@@ -77,18 +80,6 @@ public enum GradleVersionSupport {
 			case 18:
 				minVersionForRunningJRE = "7.5";
 				break;
-			case 17:
-				minVersionForRunningJRE = "7.3";
-				break;
-			case 16:
-				minVersionForRunningJRE = "7.0";
-				break;
-			case 15:
-				minVersionForRunningJRE = "6.7";
-				break;
-			case 14:
-				minVersionForRunningJRE = "6.3";
-				break;
 			default:
 				minVersionForRunningJRE = null;
 				break;

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NativeCmdIntegrationTest.java

@@ -53,7 +53,7 @@ class NativeCmdWithConfigCacheTest extends GradleIntegrationHarness implements N
 		public GradleRunner gradleRunner() throws IOException {
 			setFile("gradle.properties").toLines("org.gradle.unsafe.configuration-cache=true",
 					"org.gradle.configuration-cache=true");
-			return super.gradleRunner().withGradleVersion(GradleVersionSupport.CONFIGURATION_CACHE.version);
+			return super.gradleRunner();
 		}
 	}
 }

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/SpotlessPluginRedirectTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 DiffPlug
+ * Copyright 2020-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,13 +15,10 @@
  */
 package com.diffplug.gradle.spotless;
 
-import static org.junit.jupiter.api.condition.JRE.JAVA_11;
-
 import java.io.IOException;
 
 import org.assertj.core.api.Assertions;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.condition.EnabledForJreRange;
 
 import com.diffplug.common.base.StringPrinter;
 
@@ -39,35 +36,4 @@ void redirectPluginModernGradle() throws IOException {
 						"     To migrate:",
 						"     - Test your build with: id 'com.diffplug.gradle.spotless' version '4.5.1'"));
 	}
-
-	@Test
-	@EnabledForJreRange(max = JAVA_11)
-	void redirectPluginOldGradle() throws IOException {
-		setFile("build.gradle").toLines(
-				"plugins {",
-				"    id 'com.diffplug.gradle.spotless'",
-				"}");
-		Assertions.assertThat(gradleRunner().withGradleVersion(GradleVersionSupport.JRE_11.version)
-				.buildAndFail().getOutput().replace("\r", ""))
-				.contains(StringPrinter.buildStringFromLines(
-						"> Failed to apply plugin [id 'com.diffplug.gradle.spotless']",
-						"   > We have moved from 'com.diffplug.gradle.spotless'",
-						"                     to 'com.diffplug.spotless'",
-						"     To migrate:",
-						"     - Upgrade Gradle to 6.1.1 or newer (you're on 5.0)",
-						"     - Test your build with: id 'com.diffplug.gradle.spotless' version '4.5.1'"));
-	}
-
-	@Test
-	@EnabledForJreRange(max = JAVA_11)
-	void realPluginOldGradle() throws IOException {
-		setFile("build.gradle").toLines(
-				"plugins {",
-				"    id 'com.diffplug.spotless'",
-				"}");
-		Assertions.assertThat(gradleRunner().withGradleVersion(GradleVersionSupport.JRE_11.version)
-				.buildAndFail().getOutput().replace("\r", ""))
-				.contains(StringPrinter.buildStringFromLines(
-						"Spotless requires Gradle 6.1.1 or newer, this was 5.0"));
-	}
 }

testlib/build.gradle

@@ -7,7 +7,7 @@ apply from: rootProject.file('gradle/java-setup.gradle')
 
 dependencies {
 	api projects.lib
-	api files(projects.lib.dependencyProject.sourceSets.sortPom.output.classesDirs)
+	api files(project(projects.lib.path).sourceSets.sortPom.output.classesDirs)
 	api "com.diffplug.durian:durian-core:${VER_DURIAN}"
 	api "com.diffplug.durian:durian-testlib:${VER_DURIAN}"
 	api "org.junit.jupiter:junit-jupiter:${VER_JUNIT}"

testlib/src/main/java/com/diffplug/spotless/TestProvisioner.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2024 DiffPlug
+ * Copyright 2016-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -82,7 +82,7 @@ private static Provisioner createWithRepositories(Consumer<RepositoryHandler> re
 				return config.resolve();
 			} catch (ResolveException e) {
 				/* Provide Maven coordinates in exception message instead of static string 'detachedConfiguration' */
-				throw new ResolveException(config.getDescription(), e);
+				throw new RuntimeException("Error resolving configuration: " + config.getDescription(), e);
 			} finally {
 				// delete the temp dir
 				try {

testlib/src/test/java/com/diffplug/spotless/java/GoogleJavaFormatStepTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2024 DiffPlug
+ * Copyright 2016-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,7 +15,6 @@
  */
 package com.diffplug.spotless.java;
 
-import static org.junit.jupiter.api.condition.JRE.JAVA_13;
 import static org.junit.jupiter.api.condition.JRE.JAVA_15;
 import static org.junit.jupiter.api.condition.JRE.JAVA_20;
 import static org.junit.jupiter.api.condition.JRE.JAVA_21;
@@ -33,7 +32,6 @@
 class GoogleJavaFormatStepTest extends ResourceHarness {
 
 	@Test
-	@EnabledForJreRange(min = JAVA_13)
 	void jvm13Features() throws Exception {
 		try (StepHarness step = StepHarness.forStep(GoogleJavaFormatStep.create(TestProvisioner.mavenCentral()))) {
 			step.testResource("java/googlejavaformat/TextBlock.dirty", "java/googlejavaformat/TextBlock.clean");