alert.java

本系统是鞋厂管理系统

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

//弹出一个对话框
public class Alert extends JFrame implements ActionListener, KeyListener
{

	//用构造函数,使用字符str1,str2警示用户
	public Alert(String str1,String str2)
	{
		setLocation(420,310);
		setSize(200,150);
		
		Container c=getContentPane();
		
		JPanel p1=new JPanel();
		JPanel p2=new JPanel();
		JPanel p3=new JPanel();
		JPanel p4=new JPanel();
		JPanel p5=new JPanel();
		
		JPanel p6=new JPanel();
		
		JLabel j1=new JLabel(str1);
		JLabel j2=new JLabel(str2);
		
		JButton b=new JButton("确定");
		
		c.setLayout(new BorderLayout());
		
		p1.add(j1);
		p2.add(j2);
		p3.add(b);
		
		p4.setLayout(new GridLayout(3,1));
		p4.add(p1);
		p4.add(p2);
		p4.add(p3);
		
		
		c.add(p5,BorderLayout.NORTH);
		c.add(p4,BorderLayout.CENTER);
		c.add(p6,BorderLayout.SOUTH);
		
		b.addActionListener(this);
		b.addKeyListener( this );
	}
	
	//用构造函数,使用字符str警示用户
	public Alert(String str)
	{
		setLocation(420,310);
		setSize(200,150);
		
		Container c=getContentPane();
		JPanel p1=new JPanel();
		JPanel p2=new JPanel();
		JPanel p3=new JPanel();
		JPanel p4=new JPanel();
		JPanel p5=new JPanel();
		JPanel p6=new JPanel();
		
		JLabel jl=new JLabel(str);
		
		JButton b=new JButton("确定");
		
		c.setLayout(new BorderLayout());
		
		p1.add(jl);
		p3.add(b);
		
		p4.setLayout(new GridLayout(3,1));
		p4.add(p1);
		p4.add(p2);
		p4.add(p3); 
		
		c.add(p5,BorderLayout.NORTH);
		c.add(p4,BorderLayout.CENTER);
		c.add(p6,BorderLayout.SOUTH);
		
		b.addActionListener(this);
		b.addKeyListener( this );
	}
	
	public void actionPerformed(ActionEvent e)
	{
		if("确定".equals(e.getActionCommand()))
		{
			setVisible(false);
		}
	}
	
	//以下采用键盘事件监听
	public void keyPressed( KeyEvent e ) 
	{
	
	}
	
	public void keyReleased( KeyEvent e ) 
	{
	
	}
	
	public void keyTyped( KeyEvent e )
	{
		if( e.getKeyCode() == 0 ) 
			setVisible( false );		
	}

}