Add CodeQL analysis workflow for Java projects

Author: ludoch

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,59 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "CodeQL Java (Maven)"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '30 1 * * 1' # Runs every Monday at 1:30 UTC
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    # 1. Setup the Java Environment
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+        cache: 'maven' # Speeds up subsequent runs by caching dependencies
+
+    # 2. Initialize CodeQL
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: java
+        # Optional: queries: security-extended,security-and-quality
+
+    # 3. Manual Build (More reliable than Autobuild for Maven)
+    - name: Build with Maven
+      run: ./mvnw clean package -DskipTests # Skip tests to save time during analysis
+
+    # 4. Perform Analysis
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3