Build with multiple Java versions in CI

Author: rubensworks

.github/workflows/ci.yml

@@ -5,10 +5,20 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  DEFAULT_JAVA_VERSION: 21
+
 jobs:
   build:
-    name: Build
+    name: Build for Java ${{ matrix.java }}
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        java:
+          - 21
+          - 22
+          - 23
     steps:
       - name: 'Checkout'
         uses: actions/checkout@v4
@@ -20,7 +30,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'microsoft'
-          java-version: 21
+          java-version: ${{ matrix.java }}
       - name: 'Setup Gradle'
         uses: gradle/actions/setup-gradle@v3
         with:
@@ -64,17 +74,17 @@ jobs:
           if-no-files-found: error
           path: build/libs/*
       - name: 'Deploy to CurseForge'
-        if: startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/master')
+        if: startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/master') && startsWith(matrix.java, env.DEFAULT_JAVA_VERSION)
         env:
           CURSEFORGE_KEY_SECRET: ${{ secrets.CURSEFORGE_KEY_SECRET }}
         run: ./gradlew publishCurseForge
       - name: 'Deploy to Modrinth'
-        if: startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/master')
+        if: startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/master') && startsWith(matrix.java, env.DEFAULT_JAVA_VERSION)
         env:
           MODRINTH_KEY_SECRET: ${{ secrets.MODRINTH_KEY_SECRET }}
         run: ./gradlew modrinth
       - name: 'Deploy to Maven'
-        if: startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/heads/feature')
+        if: startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/heads/feature') && startsWith(matrix.java, env.DEFAULT_JAVA_VERSION)
         env:
           MAVEN_URL: ${{ secrets.MAVEN_URL }}
           MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}