Restful service with springboot in Java

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloWorld {

   /**
   * This method return a String with the message "Hello World".
   * @return String Obtains the message "Hello World".
   */   
   @RequestMapping(value = "/hello", method = RequestMethod.GET)
   public String hello() {
      return "Hello World";
   }
}