travis to github actions

.github/workflows/ci.yaml

@@ -0,0 +1,43 @@
+name: Java CI
+
+on:
+  push:
+    branches: [ '1.x' ]
+  pull_request:
+    branches: [ '1.x' ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        jdk: [ '8', '11' ]
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up JDK ${{ matrix.jdk }}
+      uses: actions/setup-java@v2
+      with:
+        distribution: 'temurin'
+        java-version: ${{ matrix.jdk }}
+
+    - name: Cache Maven packages
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+
+    - name: Set up permissions
+      run: chmod +x ./ci/install-jdk.sh
+
+    - name: Install JDK 11
+      if: matrix.jdk == '11'
+      run: ./ci/install-jdk.sh -F 11 -L GPL
+
+    - name: Build with Maven
+      run: mvn test -B -Dmaven.main.skip=true -Dmaven.test.skip=true