use jdk lts

Author: robberphex

.github/workflows/test.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [7, 8, 9, 10, 11 ]
+        java: [7, 8, 11, 17 ]
     steps:
       - uses: actions/checkout@v2
       - name: Setup java
@@ -16,31 +16,5 @@ jobs:
           java-version: ${{ matrix.java }} 
       - name: Build with Maven
         run: |
-          mvn clean package -DskipTests
-          mvn test
-
-  build_jdk_ge_12:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        java: [12, 13, 14, 15]
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
-        with:
-          java-version: 8
-      - name: save java8 home
-        run: |
-          export JAVA8_HOME=$JAVA_HOME && echo $JAVA8_HOME
-          echo "export JAVA8_HOME=$JAVA_HOME" > ~/.testenv
-
-      - name: Setup java
-        uses: actions/setup-java@v1
-        with:
-          java-version: ${{ matrix.java }}
-      - name: Build with Maven
-        run: |
-          source ~/.testenv 
-          mvn -Dmaven.compiler.fork=true -Dmaven.compiler.executable=$JAVA8_HOME/bin/javac clean package -DskipTests
-          mvn -Dmaven.compiler.fork=true -Dmaven.compiler.executable=$JAVA8_HOME/bin/javac test
+          mvn clean package -DskipTests --batch-mode
+          mvn test --batch-mode