Improve caching

Author: AB-xdev

.github/workflows/check-build.yml

@@ -26,12 +26,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     timeout-minutes: 30
-
     strategy:
       matrix:
-        java: [11, 17, 21]
+        java: [17, 21]
         distribution: [temurin]
-
     steps:
     - uses: actions/checkout@v5
 
@@ -43,8 +41,7 @@ jobs:
         cache: 'maven'
 
     - name: Build with Maven
-      # Java 17 is required for tests
-      run: ./mvnw -B clean package ${{ matrix.java >=17 && '-P run-integration-tests' || '-Dmaven.test.skip=true' }}
+      run: ./mvnw -B clean package -P run-integration-tests
 
     - name: Check for uncommited changes
       run: |
@@ -79,6 +76,31 @@ jobs:
         path: ${{ env.PRIMARY_MAVEN_MODULE }}/target/screenshots
         if-no-files-found: ignore
 
+  # Ensure compatibility with Java 11
+  # See https://github.com/xdev-software/chartjs-java-model/issues/14
+  build-legacy-java-11:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+    - uses: actions/checkout@v5
+
+    - name: Set up JDK
+      uses: actions/setup-java@v5
+      with:
+        distribution: temurin
+        java-version: 11
+
+    - name: Cache Maven
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-mvn-java-11-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-mvn-java-11-
+
+    - name: Build with Maven
+      run: ./mvnw -B clean package -Dmaven.test.skip=true
+
   checkstyle:
     runs-on: ubuntu-latest
     if: ${{ github.event_name != 'pull_request' || !startsWith(github.head_ref, 'renovate/') }}