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(1).  ´´½¨Ò»¸ö½Ó¿Ú, Òª´úÀíµÄÀàºÍ ´úÀíÀà¶¼½«¼Ì³ÐËü
package stone;
public interface Image {
    public void show();
}
(2). ´´½¨Òª±»´úÀíµÄÀà:
package stone;
public class BigImage implements Image {
    public BigImage() {
        try {
            Thread.sleep(3000);                      // Ä£Äâ´óͼƬҪÓó¤Ê±¼äÀ´¼ÓÔØ
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("loading big image ");
    }
    public void show() {
        System.out.println("show image");
    }
}
(3). ´´½¨´úÀíÀà
package stone;
public class TestProxy {
    public static void main(String[] args) {
        long start= System.currentTimeMillis();
        Image image= new ImageProxy(null);
        System.out.println("Load time:"+String.valueOf(System.currentTimeMillis()-start));
        image.show();
        System.out.println("Show time:"+String.valueOf(System.currentTimeMillis()-start));
    }
}
(4). ÔËÐвâÊÔÀà,²âÊÔ´úÀíģʽ:
package stone;
public class TestProxy {
    public static void main(String[] args) {
        long start= System.currentTimeMillis();
        Image image= new ImageProxy(null);
        System.out.println("Load time:"+String.valueOf(Syste


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import javax.swing.JOptionPane;
public class San {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
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