j2se中java.awt.Frame和java.awt.event.WindowListener合作写的登陆窗口(Login Window)

来源：互联网发布：windows xp 安装版编辑：程序博客网时间：2024/05/29 08:59

import java.awt.*;
import java.awt.event.*;

public class EntranceFrame extends Frame{

/**
* @param args
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  new EntranceFrame("登陆");
}

public EntranceFrame(String title){
  super(title);
  setLocation(400,200);
  setSize(400,300);
  setResizable(false);

  setLayout(new GridLayout(3,1));

  Panel user=new Panel();
  Panel passWord=new Panel();
  Panel button=new Panel();

  user.setLayout(new FlowLayout());
  passWord.setLayout(new FlowLayout());
  button.setLayout(new FlowLayout());

  Label luser=new Label("账号：");
  Label lpassWord=new Label("密码：");
  TextField tfuser=new TextField(10);
  TextField tfPassWord=new TextField(10);
  Button ok=new Button("登陆");
  Button exit=new Button("退出");

  ok.addActionListener(new ButtonActionEvent());
  exit.addActionListener(new ButtonActionEvent());

  user.add(luser);
  user.add(tfuser);
  passWord.add(lpassWord);
  passWord.add(tfPassWord);
  button.add(ok);
  button.add(exit);

  add(user);
  add(passWord);
  add(button);

  pack();
  setVisible(true);

  addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    setVisible(false);
    System.exit(0);
   }
  });
}

class ButtonActionEvent implements ActionListener{

  @Override
  public void actionPerformed(ActionEvent e) {
   //System.out.println(e.getActionCommand());
   if(e.getActionCommand().equalsIgnoreCase("退出")){
    setVisible(false);
    System.exit(0);
   }

   if(e.getActionCommand().equalsIgnoreCase("登陆")){
    System.out.println("正在登陆，请稍候片刻...");
    /*
     * 调用另外一线程验证用户的账号密码是否正确
     * 如果正确，调用主窗口(Primary Frame)关闭登陆窗口(Entrance Frame)
     * 如果不正确，弹出提示清空用户名和密码等待重新验证
     */
   }
  }

}
}