Add GitHub Actions

.github/workflows/java.yml

@@ -0,0 +1,26 @@
+name: Java
+
+on: [push]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        java-version: [8, 11, 17]
+        #include:
+        #- os: macos-latest
+        #  node-version: 18.x
+        #- os: macos-14
+        #  node-version: 18.x
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v3
+      with:
+        java-version: ${{ matrix.java-version }}
+        distribution: 'zulu'
+    - run: mvn --batch-mode verify
+