// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org)package org.xbill.DNS;/** * A special-purpose thread used by Resolvers (both SimpleResolver and * ExtendedResolver) to perform asynchronous queries. * * @author Brian Wellington */class ResolveThread extends Thread {private Message query;private Object id;private ResolverListener listener;private Resolver res;/** Creates a new ResolveThread */publicResolveThread(Resolver res, Message query, Object id,	      ResolverListener listener){	this.res = res;	this.query = query;	this.id = id;	this.listener = listener;}/** * Performs the query, and executes the callback. */public voidrun() {	try {		Message response = res.send(query);		listener.receiveMessage(id, response);	}	catch (Exception e) {		listener.handleException(id, e);	}}}