public class UI {
 /**
 * 
 */
 public void showIU(){
 //建立新界面
 JFrame frame=new JFrame();
 frame.setSize(600, 900);
 //用戶點(diǎn)擊關(guān)閉窗口時(shí)關(guān)閉界面
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 //流式布局
 FlowLayout layout=new FlowLayout();
 frame.setLayout(layout);
 //插入賬號(hào)文本框
 JTextField register=new JTextField(30);
 frame.add(register);
 //標(biāo)簽1
 JLabel label1=new JLabel("注冊賬號(hào)");
 frame.add(label1);
 //密碼
 JPasswordField word=new JPasswordField(30);
 frame.add(word);
 //標(biāo)簽2
 JLabel label2= new JLabel("找回密碼");
 frame.add(label2);
 
 JCheckBox checkbox=new JCheckBox("記住密碼 ");
 frame.add(checkbox);
 //設(shè)置復(fù)選框大小
 Dimension check =new Dimension(200,35);
 checkbox.setPreferredSize(check);
 
 
 //加入接口類
 lisener lisen=new lisener();
 //給按鈕添加監(jiān)聽器
 butt.addActionListener(lisen);
 //讓監(jiān)聽器的文本框和處理的文本框?qū)?yīng)
 lisen.nameinput=register;
 lisen.passinput=word;
 //讓監(jiān)聽器的框與此相同
 lisen.jiemian=frame;
 
 word.addActionListener(lisen);
 
 /*
 //加入接口
 Listener2 lisen1=new Listener2();
 //添加監(jiān)聽器
 word.addKeyListener(lisen1);
 //對(duì)應(yīng)文本框和密碼框
 lisen1.name1=register;
 lisen1.pass1=word;
 lisen1.frame=frame;
 */
 //設(shè)置界面可見
 frame.setVisible(true);
 
 }
 public static void main(String[] args){
 UI ui=new UI();
 ui.showIU();
 }
}

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import javax.swing.JDialog;
import javax.swing.JTextField;
import javax.swing.JOptionPane;
import javax.swing.JFrame;
public class lisener implements ActionListener{
 JTextField nameinput;
 JTextField passinput;
 JFrame jiemian;
 public void actionPerformed(ActionEvent e){
 System.out.println("鼠標(biāo)點(diǎn)擊了");
 String name=nameinput.getText();
 String password=passinput.getText();
 if(name.equals("majunlong")&&password.equals("12345678")){
  System.out.println("登陸成功");
  jiemian.dispose();
 }
  
  
 else{
  System.out.println("登陸失敗");
  JOptionPane pane=new JOptionPane();
  JOptionPane.showMessageDialog(null, "登陸失敗", "警告", JOptionPane.ERROR_MESSAGE);
  
 }
  
 
 }

}

import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JTextField;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class Listener2 implements KeyListener{
 JTextField name1;
 JFrame frame;
 JTextField pass1;

 public void keyTyped(KeyEvent e) {
 // TODO Auto-generated method stub
 
 
 }

 public void keyPressed(KeyEvent e) {
 // TODO Auto-generated method stub
 
 }

 public void keyReleased(KeyEvent e) {
 // TODO Auto-generated method stub
 System.out.println("鼠標(biāo)點(diǎn)擊了");
 String name=name1.getText();
 String password=pass1.getText();
 if(name.equals("majunlong")&&password.equals("12345678")){
  System.out.println("登陸成功");
  frame.dispose();
 }
  
  
 else{
  System.out.println("登陸失敗");
  JOptionPane pane=new JOptionPane();
  
  JOptionPane.showMessageDialog(null, "登陸失敗", "警告", JOptionPane.ERROR_MESSAGE);
  
 }
  
 
 }
 }