separate workflow to test java with sbt (#21978)

Author: wing328

.github/workflows/samples-java-sbt.yaml

@@ -0,0 +1,38 @@
+name: Samples Java (sbt)
+
+on:
+  push:
+    paths:
+      - 'samples/client/petstore/java/okhttp-gson/**'
+  pull_request:
+    paths:
+      - 'samples/client/petstore/java/okhttp-gson/**'
+jobs:
+  build:
+    name: Build sbt/Java client, servers
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          # clients
+          - samples/client/petstore/java/okhttp-gson
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: 11
+      - name: Setup sbt launcher
+        uses: sbt/setup-sbt@v1
+      - name: Cache maven dependencies
+        uses: actions/cache@v4
+        env:
+          cache-name: maven-repository
+        with:
+          path: |
+            ~/.ivy2
+          key: ${{ runner.os }}-${{ github.job }}-${{ env.cache-name }}-${{ hashFiles('**/build.sbt') }}
+      - name: Build and test
+        working-directory: ${{ matrix.sample }}
+        run: sbt -v +test

.github/workflows/samples-scala.yaml

@@ -5,12 +5,10 @@ on:
     paths:
       - 'samples/client/petstore/scala**'
       - 'samples/server/petstore/scala**'
-      - 'samples/client/petstore/java/okhttp-gson/**'
   pull_request:
     paths:
       - 'samples/client/petstore/scala**'
       - 'samples/server/petstore/scala**'
-      - 'samples/client/petstore/java/okhttp-gson/**'
 jobs:
   build:
     name: Build sbt/Scala client, servers
@@ -20,7 +18,6 @@ jobs:
       matrix:
         sample:
           # clients
-          - samples/client/petstore/java/okhttp-gson
           - samples/client/petstore/scalaz
           - samples/client/petstore/scala-pekko
           - samples/client/petstore/scala-http4s