ci: runs on ubuntu, macOS and windows. Also set multiple JDK versions

.github/workflows/ci.yml

@@ -11,17 +11,30 @@ env:
 
 jobs:
   build_and_test:
-    name: Rust project - latest
-    runs-on: ubuntu-latest
+    name: Build and Test
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest ]
+        java: [ '11', '17', '21']
         toolchain:
           - stable
           - beta
           - nightly
     steps:
       - uses: actions/checkout@v3
-      - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
-      - run: cargo build --verbose
-      - run: cargo test --verbose
-
+
+      - name: Setup JDK
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.java }}
+
+      - name: Set Rust toolchain
+        run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
+
+      - name: Build
+        run: cargo build --verbose
+
+      - name: Test
+        run: cargo test --verbose