《Java2图形设计卷II：Swing》配套光盘源码

				import java.awt.*;
				import java.awt.event.*;
				import javax.swing.*;
				
				public class Test extends JApplet {
					JButton b = new JButton("make frame");
					JDesktopPane desktopPane = new JDesktopPane();
					int windowCount = 1;
				
					public void init() {
						Container contentPane = getContentPane();
				
						contentPane.add(b, BorderLayout.NORTH);
						contentPane.add(desktopPane, BorderLayout.CENTER);
				
						desktopPane.setLayout(new FlowLayout());
				
						b.addActionListener(new ActionListener() {
							public void actionPerformed(ActionEvent event) {
								JInternalFrame jif = new JInternalFrame(
								  	"Internal Frame " + windowCount++, // title
								  	true,  // resizable
								  	true,  // closable
								  	true,  // maximizable
								  	true); // iconifiable
				
								jif.setPreferredSize(new Dimension(250, 100));
								desktopPane.add(jif);
								desktopPane.revalidate();
							}
						});
					}
				}