bookinfodemo.java

微型图书信息管理系统 基本实现所有图书信息管理的功能。

/*
 *程序加载进度
 */
package pkg;

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


class BookinfoDemo extends JWindow implements Runnable{
	
	private Thread th;
	private JProgressBar progressBar;
	private	boolean end;	
	private Back backimg;	
	private JPanel load=new JPanel();
	private int value=0;
	
	
	public BookinfoDemo(){
		
		th=null;
		end=false;
		setSize(200,50);
		setLocation(400,350);
		backimg=new Back();
		setSize(backimg.width,backimg.heighth);
		setLocation((1000-backimg.width)/2,(700-backimg.heighth)/2);
		progressBar=new JProgressBar(0,100);
		progressBar.setValue(value);
		load.setBackground(Color.CYAN);
		load.add(progressBar,"Center");
		load.add(new JLabel("程序加载中..."),"Center");
		getContentPane().add(backimg,"Center");
		getContentPane().add(load,"South");
		setVisible(true);
		th=new Thread(this);
		th.start();
		}
	
	public void run(){
		while(value<100){
			value+=10;
			progressBar.setValue(value);
			try{
				th.sleep(100);
				}
				catch(InterruptedException e){
					}
			}//while
		end=true;
		this.dispose();
	}
	
	public boolean IsEnd(){
		if(end)
			return true;
		return false;
		}
}

//加载背景
class Back extends JPanel
{
	MediaTracker mTracker;
	Image image;
	int width,heighth;
	
	public Back()
	{
		mTracker=new MediaTracker(this);
		image=Toolkit.getDefaultToolkit().getImage("BackDemo.jpg");
		mTracker.addImage(image,0);
		try
		{
			mTracker.waitForAll();
		}
		catch(InterruptedException e){}
		width=image.getWidth(this);
		heighth=image.getHeight(this);
	}
	public void paint(Graphics g)
	{
		g.drawImage(image,0,0,this);
	}
}