naprawiono konflikt w pliku DemoApplication.java

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

@@ -12,12 +12,7 @@ public class DemoApplication {
 
         System.out.println("End application");
 
-
-        System.out.println("Yes");
-
-        System.out.println("No");
-
-        System.out.println("Yes");
+        System.out.println("hello");
 	}
 
 }

src/main/java/controller/UserController.java

@@ -1,4 +1,5 @@
 package controller;
 
 public class UserController {
+    int username;
 }