《Java2图形设计卷II：Swing》配套光盘源码

				import javax.swing.*;
				
				public class AutoscrollTest extends JApplet {
					public AutoscrollTest() {
						JLabel label = new JLabel(new ImageIcon("pic.gif"));
						JViewport vp = new AutoscrollViewport(label, 3);
				
						getContentPane().add(vp, "Center");
					}
				}