mainwindow3.java

管理学生信息

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.sql.*;
class MainWindow3 extends MainWindow implements ActionListener{
	//用户界面
	JButton button1,button2,button3,button4;
	public MainWindow3(String s){
		super(s,3);
		setLayout(null);
		Image Background = Toolkit.getDefaultToolkit().getImage("icon3.jpg");
		this.getGraphics().drawImage(Background,0,0,getWidth(),getHeight(),this);
		//添加按钮
		button1=new JButton("选课/撤消");
		button2=new JButton("显示个人信息");
		button3=new JButton("修改个人信息");
		button4=new JButton("退出系统");
		add(button1);
		add(button2);
		add(button3);
		add(button4);
		button1.setBounds(50,50,200,30);
		button2.setBounds(50,100,200,30);
		button3.setBounds(50,150,200,30);
		button4.setBounds(50,200,200,30);
		//注册监听事件
		button1.addActionListener(this);
		button2.addActionListener(this);
		button3.addActionListener(this);
		button4.addActionListener(this);
		psd.addActionListener(this);
		}
		public void actionPerformed(ActionEvent e){
			if(e.getSource()==button1)
				new Insert3(s);
			if(e.getSource()==button2)
				new Display4(s);
			if (e.getSource()==psd)
				new ChangePass(s);
			if (e.getSource()==button3)
			{
				new ChangePersonInformation(s);
			}
			if(e.getSource()==button4)
				System.exit(0);
		}
}