bangzhu_gui.java

一个超市收银系统,用eclipse开发,使用了数据库

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

/**
 * 销售系统关于系统类
 * */
public class Bangzhu_gui implements ActionListener,ItemListener {
	JDialog bangzhu;
	public void bangzhu_gui(JFrame j){	
		bangzhu=new JDialog(j,"关于系统",true);
		Container cp=bangzhu.getContentPane();
		JPanel jpl1=new JPanel();
		jpl1.setLayout(new GridLayout(1,2));
		JPanel jpl11=new JPanel(new GridLayout(1,2));
		JPanel jpl12=new JPanel(new GridLayout(3,1));
	//	Icon ico=new ImageIcon("image/user1.jpg");
	//	JLabel jl1=new JLabel(ico);
		JLabel jl2=new JLabel();
		
	//	JButton jb1=new JButton("功能模块详细信息");
		JButton jb2=new JButton("确定");
		jb2.setFont(new Font("TimesRoman",Font.PLAIN,15));
		jb2.addActionListener(this);
		//jb2.action(0, this);
	//	jpl11.add(jl1);
		jpl11.add(jl2);
		jpl11.add(jl2);
		jpl11.add(jl2);
		jpl11.add(jb2);
		jpl1.add(jpl11);
		//jpl1.add(jpl12);
		
		JPanel jpl2=new JPanel();
		//jpl2.setBackground(new Color(255,0,0));
		jpl2.setLayout(new GridLayout(4,1));
		JLabel jl4=new JLabel("    销售简易程序1.0版");
		jl4.setFont(new Font("TimesRoman",Font.PLAIN,15));
		JLabel jl5=new JLabel("    作品设计：傅意哲,张洁钰,姜嫱");
		jl5.setFont(new Font("TimesRoman",Font.PLAIN,15));
		JLabel jl6=new JLabel("    版权所有：2007(c)");
		jl6.setFont(new Font("TimesRoman",Font.PLAIN,15));
		JLabel jl7=new JLabel("    作者单位：华东师范大学");
		jl7.setFont(new Font("TimesRoman",Font.PLAIN,15));
		//jl4.setBackground(new Color(255,0,0));
		jpl2.add(jl4);
		jpl2.add(jl5);
		jpl2.add(jl7);
		jpl2.add(jl6);
		cp.add(jpl2,BorderLayout.NORTH);
		cp.add(jpl1,BorderLayout.SOUTH);
		bangzhu.setBounds(300, 300, 300, 150);
		/*[窗口屏幕中间显示]*/
		 Dimension   screenSize   =   Toolkit.getDefaultToolkit().getScreenSize();   
         Dimension   frameSize   =   bangzhu.getSize();   
         if   (frameSize.height   >   screenSize.height)   {   
             frameSize.height   =   screenSize.height;   
         }   
         if   (frameSize.width   >   screenSize.width)   {   
             frameSize.width   =   screenSize.width;   
         }   
         bangzhu.setLocation((screenSize.width   -   frameSize.width)   /   2,   (screenSize.height   -   frameSize.height)   /   2);   

		bangzhu.show(true);
	}
	/**
	 * 事件触发
	 * @param  e  触发的事件   
	 * */
    public void actionPerformed(ActionEvent e){
    	if(e.getActionCommand().equals("确定"))
    	{
    		bangzhu.dispose();    		
    	}
	}
    public void itemStateChanged(ItemEvent e){
		//str=(String)e.getItem();
	}

}