init

src/main/java/com/backend/webbackend/Service/courseService.java

@@ -0,0 +1,11 @@
+package com.backend.webbackend.Service;
+
+import com.backend.webbackend.domain.Course;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public interface courseService {
+    List<Course> getAllCourseInfo();
+}