Add gradle build without wrapper

Author: PhilWakelin

.github/workflows/java.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Build with Maven
         run: ./mvnw --batch-mode --update-snapshots --file pom.xml -Djava.version=${{ matrix.jdk }} package
 
-  build-gradle:
+  build-gradlew:
     name: Build Gradle wrapper
 
     runs-on: ubuntu-latest
@@ -67,3 +67,26 @@ jobs:
     - name: Build with Gradle
       run: ./gradlew build bootWar -Pjava_version=${{ matrix.jdk }}
 
+  build-gradle:
+        name: Build Gradle
+        
+        runs-on: ubuntu-latest
+        strategy:
+          matrix:
+             jdk: [8, 11, 17]
+             
+        steps:
+        - uses: actions/checkout@v4
+        - name: Set up JDK ${{ matrix.jdk }}
+          uses: actions/setup-java@v4
+          with:
+            java-version: ${{ matrix.jdk }}
+            distribution: 'semeru'
+        - name: Setup Gradle
+          uses: gradle/actions/setup-gradle@v4
+          id: setup-gradle
+          with:
+            gradle-version: 8.6          
+        - name: Build with Gradle
+          run: ./gradle build bootWar -Pjava_version=${{ matrix.jdk }}
+