package cn.js.fan.mail;import javax.mail.Authenticator;import javax.mail.PasswordAuthentication;public class PopupAuthenticator extends Authenticator{    String username;    String password;    public PopupAuthenticator()    {        username = null;        password = null;    }    public void init(String s, String s1)    {        username = s;        password = s1;    }    protected PasswordAuthentication getPasswordAuthentication()    {        return new PasswordAuthentication(username, password);    }}