package com.wy.FrameClass;



import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * 测试输入密码和用户名后打印输入的密码和用户名。
 * Created by Administrator on 2016/4/18.
 */
public class PasswordField extends JFrame {
    private JTextField userName;
    private JPasswordField userPassword;
    private JButton logonButton;
    private JButton exitButton;
    public PasswordField(){
        super("密码验证");
        Container container=getContentPane();
        container.setLayout(new GridLayout(3,2,2,2));
        userName=new JTextField(16);
        userPassword=new JPasswordField(16);
        logonButton=new JButton("登录");
        exitButton=new JButton("退出");
        logonButton.addActionListener(new AbstractAction() {
            @Override
            public void actionPerformed(ActionEvent e) {
                char[] pw=userPassword.getPassword();
                String message="你的用户名是："+userName.getText()+"你的密码是："+new String(pw);
                JOptionPane.showMessageDialog(PasswordField.this,message);
            }
        });
        exitButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.exit(-1);
            }
        });
        container.add(new JLabel("      用户名："));
        container.add(userName);
        container.add(new JLabel("      密码："));
        container.add(userPassword);
        container.add(logonButton);
        container.add(exitButton);
        setResizable(false);
        setSize(300,200);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String []args){
        new PasswordField();
    }
}