Modyfikacja klasy main, dodanie pliku UserEntity.java

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

@@ -8,6 +8,7 @@ public class DemoApplication {
 
 	public static void main(String[] args) {
 		System.out.println("Start application");
+		System.out.println("Hello World");
 		SpringApplication.run(DemoApplication.class, args);
 	}