Sets up arrays of Java versions

.github/workflows/build.yml

@@ -9,16 +9,18 @@ jobs:
   build:
 
     runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 11
-        uses: actions/setup-java@v2
-        with:
-          java-version: '11'
-          distribution: 'adopt'
-#          cache: gradle
-      - name: Grant execute permission for gradlew
-        run: chmod +x gradlew
-      - name: Build with Gradle
-        run: ./gradlew build 
+    strategy:
+          matrix:
+            java: [ '8', '11', '17' ]
+        name: Java ${{ matrix.Java }} sample
+        steps:
+          - uses: actions/checkout@v2
+          - name: Setup java
+            uses: actions/setup-java@v2
+            with:
+              distribution: '<distribution>'
+              java-version: ${{ matrix.java }}
+          - name: Grant execute permission for gradlew
+            run: chmod +x gradlew
+          - name: Build with Gradle
+            run: ./gradlew build 

.sdkmanrc

@@ -0,0 +1,3 @@
+# Enable auto-env through the sdkman_auto_env config
+# Add key=value pairs of SDKs to use below
+java=11.0.11.j9-adpt