Fix rust ci

.github/workflows/rust.yml

@@ -1,4 +1,4 @@
-name: Rust
+name: Build with Rust
 
 on:
     push:
@@ -11,15 +11,26 @@ env:
 
 jobs:
     build:
-
         runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: rust
+        permissions:
+            contents: read
 
         steps:
             - uses: actions/checkout@v4
-    - name: Build
+            - name: Set up JDK 21
+              uses: actions/setup-java@v4
+              with:
+                  java-version: "21"
+                  distribution: "temurin"
+            - name: Setup Gradle
+              uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582
+            - name: Build JAR with Gradle
+              run: ./gradlew jar
+              working-directory: java
+
+            - name: Build rust
               run: cargo build --verbose
-    - name: Run tests
+              working-directory: rust
+            - name: Run rust tests
               run: cargo test --verbose
+              working-directory: rust