Builds and tests all major Java versions on the Ubuntu and MacOS.

.github/workflows/build-and-test.yml

@@ -4,21 +4,26 @@ on: [push, pull_request]
 
 jobs:
   build-and-test:
-    runs-on: ubuntu-latest
-
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        java: [8, 11, 15]
+        os: [ubuntu-latest, macOS-latest]
+      fail-fast: false
+      max-parallel: 3
+    name: Build and Test JDK ${{ matrix.java }}, ${{ matrix.os }}
     steps:
-
       - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
+      - name: Set up JDK
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: ${{ matrix.java }}
       - uses: actions/cache@v1
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
           restore-keys: |
-                ${{ runner.os }}-maven-
+            ${{ runner.os }}-maven-
       - name: Build with Maven
         run: mvn clean install
       - name: Remove JTS artifacts from cache