java: Enable CodeQL

Author: mpkorstanje

.github/workflows/codeql-java.yaml

@@ -0,0 +1,55 @@
+name: codeql-java
+
+permissions: { }
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - java/**
+      - testdata/**
+      - .github/**
+  pull_request:
+    branches:
+      - main
+    paths:
+      - java/**
+      - testdata/**
+      - .github/**
+  schedule:
+    - cron: '44 5 * * 0'
+
+concurrency:
+  # Cancels in-progress runs only for pull requests
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze Java
+    runs-on: 'ubuntu-latest'
+    permissions:
+      security-events: write
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: github/codeql-action/init@c10b8064de6f491fea524254123dbe5e09572f13 # v4.35.1
+        with:
+          languages: java
+          build-mode: manual
+          tools: linked
+      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
+        with:
+          distribution: 'temurin'
+          java-version: 21
+          cache: 'maven'
+      - name: Build
+        shell: bash
+        run: |
+          mvn compile --batch-mode -Dstyle.color=always --show-version
+        working-directory: java
+      - uses: github/codeql-action/analyze@c10b8064de6f491fea524254123dbe5e09572f13 # v4.35.1
+        with:
+          category: "/language:java"