这是源代码:import java.awt.*;
import java.awt.event.*;
import javax.swing.*;class ImagePanel extends JPanel
{ public ImagePanel()
{
//image = Toolkit.getDefaultToolkit().getImage("blue-ball.gif");
image = Toolkit.getDefaultToolkit().getImage("screen.gif");
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(image, 0);
try { tracker.waitForID(0); }
catch (InterruptedException e) {} } public void paintComponent(Graphics g)
{ super.paintComponent(g);
Dimension d = getSize();
int clientWidth = d.width;
int clientHeight = d.height; int imageWidth = image.getWidth(this);
int imageHeight = image.getHeight(this);
System.out.println(imageWidth);
System.out.println(imageHeight);
g.drawImage(image, 0, 0,1024,768, this);
/* for (int i = 0; i * imageWidth <= clientWidth; i++)
for (int j = 0;
j * imageHeight <= clientHeight; j++)
if (i + j > 0)
g.copyArea(0, 0, imageWidth, imageHeight,
i * imageWidth, j * imageHeight);
*/
} private Image image;
}class ImageFrame extends JFrame
{ public ImageFrame()
{ setTitle("ImageTest");
setSize(1024,768);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{ System.exit(0);
}
} );
Container contentPane = getContentPane();
contentPane.add(new ImagePanel());
}
}public class ImageTest
{ public static void main(String[] args)
{ JFrame frame = new ImageFrame();
frame.show();
}
}
import java.awt.event.*;
import javax.swing.*;class ImagePanel extends JPanel
{ public ImagePanel()
{
//image = Toolkit.getDefaultToolkit().getImage("blue-ball.gif");
image = Toolkit.getDefaultToolkit().getImage("screen.gif");
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(image, 0);
try { tracker.waitForID(0); }
catch (InterruptedException e) {} } public void paintComponent(Graphics g)
{ super.paintComponent(g);
Dimension d = getSize();
int clientWidth = d.width;
int clientHeight = d.height; int imageWidth = image.getWidth(this);
int imageHeight = image.getHeight(this);
System.out.println(imageWidth);
System.out.println(imageHeight);
g.drawImage(image, 0, 0,1024,768, this);
/* for (int i = 0; i * imageWidth <= clientWidth; i++)
for (int j = 0;
j * imageHeight <= clientHeight; j++)
if (i + j > 0)
g.copyArea(0, 0, imageWidth, imageHeight,
i * imageWidth, j * imageHeight);
*/
} private Image image;
}class ImageFrame extends JFrame
{ public ImageFrame()
{ setTitle("ImageTest");
setSize(1024,768);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{ System.exit(0);
}
} );
Container contentPane = getContentPane();
contentPane.add(new ImagePanel());
}
}public class ImageTest
{ public static void main(String[] args)
{ JFrame frame = new ImageFrame();
frame.show();
}
}
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