added java

Author: aperez-worklytics

.github/workflows/emulator-test.yml

@@ -18,11 +18,15 @@ jobs:
         with:
           project_id: dummy-project
           install_components: 'beta'
-      - name: Install Java & netcat (required by emulator)
+      - name: Setup Java 21 (Temurin) and netcat
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+      - name: Install netcat
         run: |
           sudo apt-get update
-          # Datastore emulator requires a JRE on the runner
-          sudo apt-get install -y default-jre-headless netcat-openbsd
+          sudo apt-get install -y netcat-openbsd
           java -version || true
       - name: Install Datastore emulator component
         run: |