Setup GitHub action

Author: canabrook

.github/workflows/test.yml

@@ -14,6 +14,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set up Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
       - name: Set up Python
         uses: actions/setup-python@v5
         with: