Invoke RESTful webservice with parameter

I have a simple RESTful web service that print "Hello World !" I'm using NetBeans and the code looks like:

package resource;

import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.Consumes;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;


@Path("simple")
public class SimpleResource {

    @Context
    private UriInfo context;

    /** Creates a new instance of SimpleResource */
    public SimpleResource() {
    }

    @GET
    @Produces("application/xml")
    public String getXml() {
        //TODO return proper representation object
        return "<greeting>Hello World !</greeting>";
    }

    @PUT
    @Consumes("application/xml")
    public void putXml(String content) {
    }
}

I call this web service from this URL : http://localhost:8080/WebService/resources/simple. Now, I want to send a parameter to this web service, then print this parameter after the "Hello world" message.

How can we do that?

Thanks!