JAVA 编程小疑点

2012-01-30

JAVA 编程小问题package cn.edu.ctgu.imagetestimport java.awt.*import javax.swing.*import java.net

JAVA 编程小问题
package cn.edu.ctgu.imagetest;
import java.awt.*;
import javax.swing.*;
import java.net.*;
public class ImageShow {
public static void main(String[] args)
{
ImageFrame frame=new ImageFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}

}
class ImageFrame extends JFrame
{
public ImageFrame()
{
setTitle("ImageShow");
setSize(WIDTH,HEIGHT);
ImagePanel panel=new ImagePanel();
Container contentPane=getContentPane();
contentPane.add(panel);

}
public static final int WIDTH=300;
public static final int HEIGHT=200;
}
class ImagePanel extends JPanel
{
public ImagePanel()
{

URL url=new URL("http://img1.fadmy.net/star/1/1513/151314151513.jpg");
image=Toolkit.getDefaultToolkit().getImage(url);
MediaTracker tracker=new MediaTracker(this);
tracker.addImage(image, 1);
try
{
tracker.waitForID(1);
}
catch(InterruptedException exception)
{}

}
public void paintCompont(Graphics g)
{
super.paintComponent(g);
int imageWidth=image.getWidth(this);
int imageHeigth=image.getHeight(this);
int FrameWidth=getWidth();
int FrameHeight=getHeight();
int x=(FrameWidth-imageWidth)/2;
int y=(FrameHeight-imageHeigth)/2;
g.drawImage(image, x, y, null);
}
private Image image;
}

在本地上显示网络上的图片？
URL url=new URL("http://img1.fadmy.net/star/1/1513/151314151513.jpg");
image=Toolkit.getDefaultToolkit().getImage(url);
这两句有什么错～？

[解决办法]
http://topic.csdn.net/u/20071012/13/298279f1-8247-4714-87c2-8cf1e779fb15.html
这个你还没结呢。

Image image=Toolkit.getDefaultToolkit().getImage(url);

[解决办法]

Java code

String url="http://img.asiaec.com/le365/laugh/qwgx/images/piccyyk0ufy.jpg";         try   {             image   =   getImage(new URL(url));         }   catch(Exception   e){}     }          Graphics g=new Graphics();          g.drawImage(image,   0,   0,this);     }
[解决办法]
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JAVA 编程小疑点