Hello SpringBoot world

I am "trying" to launch the hello world of SpringBoot for Rest services, Documentation would say that there is little and poorly explained ...

At the moment I am following these links:

link link

Comment:

- I have the Eclipse, I have created a project with maven, I have put it with devtools and with boot and restRepository

I forced the pom.xml I created a new controller:

myController.java:

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

@RestController

public class miController {

    @RequestMapping("/")
    String raiz() {
        return "Bienvenido!!!";
    }

    @RequestMapping("saludo")
    String saludo() {
        return "Hola !!!!!!!!!!";
    }  

}

When I start it

Usage: RealmBase [-a <algorithm>] [-e <encoding>] [-i <iterations>] [-s <salt-length>] [-k <key-length>] [-h <handler-class-name>] <credentials>

And logically the localhost / 8080 does not do anything to me.