基于JAINSIP的一个proxy源码

				/*				 * UserTag.java				 *				 * Created on October 31, 2002, 9:15 PM				 */								package gov.nist.sip.instantmessaging.authentication;								/**				 *				 * @author  deruelle				 */				public class UserTag {				    				    private String userName;				    private String userRealm;				    private String userPassword;				    				    /** Creates a new instance of UserTag */				    public UserTag() {				        userName=null;				        userRealm=null;				        userPassword=null;				    }				    				    public void setUserName(String userName) {				        this.userName=userName;				    }				     				    public void setUserRealm(String userRealm) {				        this.userRealm=userRealm;				    }				       				    public void setUserPassword(String userPassword) {				        this.userPassword=userPassword;				    }				    				    public String  getUserName() {				        return userName;				    }				    				    public String  getUserRealm() {				        return userRealm;				    }				     				    public String  getUserPassword() {				        return userPassword;				    }				    				    public String toString() {				        String res="				        if (userName!=null ) res+="name="+"\""+userName+"\"\n";				        if (userRealm!=null ) res+="realm="+"\""+userRealm+"\"\n";				        if (userPassword!=null ) res+="password="+"\""+userPassword+"\"\n";				        res+="/>\n";				        				        return res;				    }				    				}