Create maven.yml

Author: shannah

.github/workflows/maven.yml

@@ -0,0 +1,27 @@
+name: Java CI with Maven
+
+on: [push, pull_request]
+env:
+  DEVELOPER_DIR: /Applications/Xcode_11.2.app/Contents/Developer
+jobs:
+  build:
+    runs-on: macos-latest
+    
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Cache local Maven repository
+      uses: actions/cache@v2
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+    
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+    
+    - name: Build with Maven
+      run: mvn --batch-mode --no-transfer-progress --update-snapshots verify