//最近在教学JavaMail时采用的username/password认证代码，zfluynu 
import javax.mail.*;
public class MailAuthenticator extends Authenticator...{

String authenName; //用户名 

String authenPass; //密码 
public MailAuthenticator(String authenName,String authenPass) ...{

super();

this.authenName=authenName;

this.authenPass=authenPass;

}
public PasswordAuthentication getPasswordAuthentication()...{

//若服务器需要身份认证，Session会自动调用这个方法 
return new PasswordAuthentication(authenName,authenPass);

}

}