Prepare testing java tests in github actions

Author: ktoso

.github/workflows/pull_request.yml

@@ -1,16 +1,32 @@
 name: pull_request
 
 on:
-    pull_request:
-      types: [opened, reopened, synchronize]
+  pull_request:
+    types: [ opened, reopened, synchronize ]
 
 jobs:
-   tests:
-        name: tests
-        uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+  test-java:
+    name: Java tests (${{ matrix.swift_version }} - ${{ matrix.os_version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        swift_version: ['6.0', 'nightly-main']
+        os_version: ['jammy']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
-          exclude_swift_versions: "[{\"swift_version\": \"5.8\"}, {\"swift_version\": \"5.9\"}, {\"swift_version\": \"5.10\"}]"
-          pre_build_command: "apt-get update -y -q && apt-get install -y -q openjdk-21-jdk make"
-          build_command: "make"
-          env_vars: |
-            JAVA_HOME="/usr/lib/jvm/java-21-openjdk-amd64"
+          distribution: 'zulu'
+          java-version: '22'
+          cache: 'gradle'
+      - run: ./gradlew build --no-daemon
+  test-swift:
+    name: Swift tests (${{ matrix.swift_version }} - ${{ matrix.os_version }})
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      exclude_swift_versions: "[{\"swift_version\": \"5.8\"}, {\"swift_version\": \"5.9\"}, {\"swift_version\": \"5.10\"}]"
+      pre_build_command: "apt-get update -y -q && apt-get install -y -q openjdk-21-jdk make"
+      build_command: "make jextract-run"
+      env_vars: |
+        JAVA_HOME="/usr/lib/jvm/java-21-openjdk-amd64"