imageshow.java

一个非常简单的图片显示程序 哈哈哈哈哈哈哈哈爱荷华

import java.awt.*;
import javax.swing.*;
public class ImageShow
{
	public static void main(String [] args)
	{
		ImageFrame  f = new ImageFrame();
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.show();
	}
}
class ImageFrame extends JFrame
{
	public ImageFrame()
	{
		setTitle("Mouse Draw");
		setSize(300,200);
		ImagePanel Panel = new ImagePanel();
		Container contentPane = getContentPane();
		contentPane.add(Panel);
	}
}
class ImagePanel extends JPanel
{
	public ImagePanel()
	{
		//smileing = Toolkit.getDefaultToolkit().getImage("simle.gif");
		smileing = getImage(getCodeBase(),"simle.gif");
		MediaTracker tracker = new MediaTracker(this);
		tracker.addImage(smileing,0);

		try
		{
			tracker.waitForID(1);
			
		}
		catch(InterruptedException Exception)
		{
		}
			
	}
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		
		int imageWidth = smileing.getWidth(this);
		int imageHeight = smileing.getHeight(this);
		
		int x = (getWidth() - imageWidth)/2;
		int y = (getHeight() - imageHeight)/2;
		g.drawImage(smileing, 20, 20, null);
	}
			
	private Image smileing;
}