SimpleServer.java

import org.restlet.Application;
import org.restlet.Server;
import org.restlet.data.Protocol;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;

public class SimpleServer extends Application {
    public static void main(String[] args) throws Exception {
        new Server(Protocol.HTTP, 8111, GreetingResource.class).start();
    }

    public static class GreetingResource extends ServerResource {
        @Get
        public String getHello() {
            return "Hello, " + getQueryValue("input");
        }
    }
}