Spring Boot REST not showing or linking to RESTController page/class

please i wrote this spring boot rest base application bellow, which when runs it starts the application but i can not call or been link to the REST Controller page/class .

this is the main class:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan
public class SoccerglueApplication {

public static void main(String[] args) {
    SpringApplication.run(SoccerglueApplication.class, args);
}

}

this is the controller class:

@RestController
@RequestMapping(value = "/root")
public class SoccerNewsAPI {

@GetMapping(value = "/in")
public String getMessage(){
return "Welcome to the Spring Boot Test"; }

}