RestService.java

package localhost.jettyrestdemo;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/")
public class RestService {
    @GET
    @Path("hello")
    @Produces(MediaType.TEXT_PLAIN + ";charset=utf-8")
    public String hello() {
        return "Hello World!";
    }
}