Automated build that will use gradle or raw javac commands if no buil…

…d.gradle file

.github/workflows/simple_build.yml

@@ -5,24 +5,51 @@ name: Java CI
 
 on:
   push:
-    branches: [ master ]
   pull_request:
-    branches: [ master ]
 
 jobs:
-  build:
-
+  # Test for presence of build.gradle file
+  # Only run these raw javac if not found
+  build-with-shell:
+    if: ${{ hashFiles('build.gradle') == '' }}
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
         java-version: 1.8
     - name: Build Java Code
       run: javac -cp lib/hamcrest-core-1.3.jar:lib/junit-4.12.jar *.java
     - name: Run Unit Tests
       run: java -cp .:lib/hamcrest-core-1.3.jar:lib/junit-4.12.jar org.junit.runner.JUnitCore EdgeConnectorTest
+    # Display the files that the action sees in the home directory
     - name: List files
-      run: ls -l
+      run: tree
+
+  # If there's a build.gradle file then run gradle on it
+  build-with-gradle:
+    if: ${{ hashFiles('build.gradle') != '' }}
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    # JDK17 compatible with Gradle 7.2
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        distribution: 'zulu'
+        java-version: 17
+    - name: Setup Gradle
+      uses: gradle/gradle-build-action@v2
+      with: 
+        gradle-version: 7.2
+
+    - name: Execute Gradle wrapper build
+      if: ${{ hashFiles('gradlew') != '' }}
+      run: ./gradlew build
+
+    - name: Execute Gradle build 
+      if: ${{ hashFiles('gradlew') == '' }}
+      run: gradle test