日期:2014-05-20 浏览次数:20744 次
import java.awt.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
/**
* @version 1.33 2007-04-14
* @author Cay Horstmann
*/
public class ImageTest
{
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
ImageFrame frame = new ImageFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
/**
* A frame with an image component
*/
class ImageFrame extends JFrame
{
public ImageFrame()
{
setTitle("ImageTest");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
// add component to frame
ImageComponent component = new ImageComponent();
add(component);
}
public static final int DEFAULT_WIDTH = 300;
public static final int DEFAULT_HEIGHT = 200;
}
/**
* A component that displays a tiled image
*/
class ImageComponent extends JComponent
{
public ImageComponent()
{
// acquire the image
try
{
image = ImageIO.read(new File("blue-ball.gif"));
}
catch (IOException e)
{
e.printStackTrace();
}
}
public void paintComponent(Graphics g)
{
if (image == null) return;
int imageWidth = image.getWidth(this);
int imageHeight = image.getHeight(this);
// draw the image in the upper-left corner
g.drawImage(image, 0, 0, null);
// tile the image across the component