Modified main program and added new file with class

src/main/java/com/example/demo/DemoApplication.java

@@ -9,6 +9,7 @@ public class DemoApplication {
 	public static void main(String[] args) {
     System.out.println("Start application");
 		SpringApplication.run(DemoApplication.class, args);
+    System.out.println("Finish application");
 	}
 
 }

src/main/java/com/example/demo/controller/UserController.java

@@ -0,0 +1,2 @@
+public class UserController{
+}