Create java-ci.yml

Author: hyebin-dev

.github/workflows/java-ci.yml

@@ -0,0 +1,27 @@
+name: Java CI (compile)
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "11"   # 네 환경에 맞춤 (JavaSE-11)
+      - name: Compile all .java files
+        run: |
+          mkdir -p out
+          files="$(git ls-files '*.java')"
+          if [ -n "$files" ]; then
+            javac -d out $files
+          else
+            echo "No Java sources found."
+          fi