checkid.java

一般的延时子程序

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;

public class CheckID extends JFrame implements ActionListener   //后台管理登陆界面
{ 
	//JFrame c;
	JDialog c =new JDialog();   
    private JTextField zhanghaoField = new JTextField();
    private JPasswordField passwordField = new JPasswordField();
    private JButton jbOK = new JButton("确定");
    private JButton jbCancel = new JButton("取消");
    
    private String name = "jgj";  //帐号名
    private String pw = "052";    //密码
   
    
    public CheckID()
    {	
    	c.setTitle("管理员登陆");
    	c.setLayout(new GridLayout(3,2));  //窗口布局
    	c.add(new JLabel("帐号:",SwingConstants.CENTER)); //居中显示
    	c.add(zhanghaoField);
    	c.add(new JLabel("密码:",SwingConstants.CENTER));
    	c.add(passwordField);
    	c.add(jbOK);
    	c.add(jbCancel);
    	c.pack();   	
    	c.setBounds(400,300,200,150);
    	c.setVisible(true);
    	
    	jbOK.addActionListener(this);
    	jbCancel.addActionListener(this);
    }
    
    public void actionPerformed(ActionEvent e)  //管理员后台管理登陆
    {
    	String zhanghao = zhanghaoField.getText().trim();
    	String password = passwordField.getText().trim();    	
	
		if (e.getSource() == jbOK)
		{
			if (zhanghao.length() == 0) //帐号为空
			{
				JOptionPane.showMessageDialog(null,"请输入帐号!","错误信息",JOptionPane.ERROR_MESSAGE);
				zhanghaoField.setText("");
				passwordField.setText("");				
				return;
			}
			   
			if (!zhanghao.equals(name) ) //帐号不正确
			{
				JOptionPane.showMessageDialog(null,"对不起!你的帐号不正确!",
				                              "帐号错误",JOptionPane.ERROR_MESSAGE);
				zhanghaoField.setText("");
				passwordField.setText("");			
				return;
			}
			
			if (password.length() == 0) //密码为空
			{
				JOptionPane.showMessageDialog(null,"请输入密码!","错误信息",JOptionPane.ERROR_MESSAGE);
				zhanghaoField.setText("");
				passwordField.setText("");				
				return;
			}
			  
			if (!password.equals(pw)) //密码不正确
			{
				JOptionPane.showMessageDialog(null,"对不起!你的密码不正确!",
				                              "帐号错误",JOptionPane.ERROR_MESSAGE);
				zhanghaoField.setText("");
				passwordField.setText("");				
				return;
			}
			
			if (zhanghao.equals(name) && password.equals(pw))  //帐号密码正确
			{
				this.setVisible(false);
				c.dispose();
				
				Interface.manager = new TestDB();
			
				Interface.manager.setSize(470,370);
				Interface.manager.setResizable(false);
			    Interface.manager.setTitle("航班管理系统");
			    Interface.manager.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
				Interface.manager.setVisible(true);
			}
		}
		else if(e.getSource() == jbCancel)
		{
			//this.setVisible(false);
			c.dispose();		
		}
	
    }
    
    
	
}