基于JAINSIP的一个proxy源码

				/*				 * PresentityTag.java				 *				 * Created on September 24, 2002, 11:01 AM				 */								package gov.nist.sip.instantmessaging.presence.cpimparser;								/**				 *				 * @author  deruelle				 * @version 1.0				 */				public class PresentityTag  {								    private String id;				    				    /** Creates new PresentityTag */				    public PresentityTag() {				        id=null;				    }								    public void setId(String id) {				        this.id=id;				    }				    				    public String getId() {				        return id;				    }								    public String toString() {				        String result="\n";				        return result;				    }				    				}