Update workflow

.gitea/workflows/build_and_test.yml

@@ -6,14 +6,14 @@ jobs:
   Explore-Gitea-Actions:
     runs-on: ubuntu-latest
     steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
-      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
       - name: Check out repository code
         uses: actions/checkout@v3
-      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
+      - name: Install java
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+        uses: actions/setup-java@v4
-      - name: List files in the repository
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+          cache: 'maven'
+      - name: Run tests
         run: |
-          ls ${{ gitea.workspace }}
+          mvn test
-      - run: echo "🍏 This job's status is ${{ job.status }}."