messageboxlistener.java

一个学籍管理系统。

/*
 * Created on 2004-5-29
 */

/**
 * @author Zhou Qi
 * @Use to handle different MessageBox event
 */
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;

public class MessageBoxListener
{
	public static void main(String args[])
	{}
}

class MessageBoxEmpty
{
	public void actionPerformed(ActionEvent e)
	{
		JButton myjb=(JButton)e.getSource();
		String empty="UserName and Password fields must be filled!";
		JOptionPane.showConfirmDialog(null,empty,"Invalid Input",JOptionPane.ERROR_MESSAGE);
	}
}