update pipline to use matrix configuration

.github/workflows/pipeline.yml

@@ -5,49 +5,51 @@ name: Java CI with Maven
 
 on:
   push:
-    branches: [ master ]
+    # branches: [ master ]
   pull_request:
     branches: [ master ]
 
 jobs:
-  compile:
-    runs-on: ubuntu-latest
+  # old-school build and jar method. No tests run or compiled.
+  build-1_6: 
+    runs-on: ubuntu-16.04
+    strategy:
+      matrix:
+        # build for java 1.6, however don't run any tests
+        java: [ 1.6 ]
+    name: Java ${{ matrix.java }}
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Compile with Maven
-      run: mvn compile
-    - name: Assemble with Gradle
-      run: sh ./gradlew assemble
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Test with Maven
-      run: mvn test
-    - name: Gradle Check, Gradle Test is inclusive
-      run: sh ./gradlew assemble check
+      - uses: actions/checkout@v2
+      - name: Setup java
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Compile Java ${{ matrix.java }}
+        run: |
+          mkdir -p target/classes
+          javac -d target/classes/ src/main/java/org/json/*.java
+      - name: Create java ${{ matrix.java }} JAR
+        run: |
+          jar cvf target/org.json.jar -C target/classes .
+      - name: Upload Java ${{ matrix.java }} JAR
+        uses: actions/upload-artifact@v1
+        with:
+          name: Java ${{ matrix.java }} JAR
+          path: target/org.json.jar
+      
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-16.04
+    strategy:
+      matrix:
+        # build against supported Java LTS versions:
+        java: [ 1.7, 8, 11 ]
+    name: Java ${{ matrix.java }} Compile
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Build with Maven
-      run: mvn -B package --file pom.xml
-    - name: Build with Gradle
-      run: sh ./gradlew build
-    #- name: Publish to GitHub Packages Apache Maven
-    #  run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml
-    #  env:
-    #    GITHUB_TOKEN: ${{ github.token }}
-
+      - uses: actions/checkout@v2
+      - name: Setup java
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - run: mvn clean compile -Dmaven.compiler.source=${{ matrix.java }} -Dmaven.compiler.target=${{ matrix.java }} -Dmaven.test.skip=true -Dmaven.site.skip=true -Dmaven.javadoc.skip=true
+      - run: mvn test -Dmaven.compiler.source=${{ matrix.java }} -Dmaven.compiler.target=${{ matrix.java }} -Dmaven.test.skip=true -Dmaven.site.skip=true -Dmaven.javadoc.skip=true
+