10 //这里通过drawRenderedImage方法将源图像变换后的结果直接写入目的BufferedImage
11 //注意：源图像并未发生变换
12 g.drawRenderedImage(bufferedImage, at);
13 ImageIO.write(destImage, "JPG", new File("D:/desktop.jpg"));
14 System.out.println("Over.");
15 }
16 }
6) Icon文件的读入： www.2cto.com
1 public class MyTest extends JPanel {
2 public static void main(String[] args) throws IOException {
3 JFrame frame = new JFrame();
4 frame.setTitle("Read Icon");
5 frame.setSize(300, 300);
6 frame.addWindowListener(new WindowAdapter() {
7 public void windowClosing(WindowEvent e) {
8 System.exit(0);
9 }
10 });
11 Container contentPane = frame.getContentPane();
12 contentPane.add(new MyTest());
13 frame.show();
14 }
15 public void paintComponent(Graphics g) {
16 super.paintComponent(g);
17 ImageIcon icon = new ImageIcon("D:/desktop.jpg");
18 int width = icon.getIconWidth();
19 int height = icon.getIconHeight();
20 int x = 0;
21 int y = 0;
22 //1. 利用ImageIcon的功能直接绘制
23 icon.paintIcon(this, g, x, y);
24 Graphics2D g2d = (Graphics2D)g;
25 //2. 转换到BufferedImage后在绘制
26 BufferedImage bi = icon.getImage();
27 g2d.drawImage(bi, x + 100, y + 100, null);
28 System.out.println("Width = " + width + " Height = " + height);
29 }
30 }