JDesktopPane() constructor from JDesktopPane has the following syntax.
public JDesktopPane()
In the following code shows how to use JDesktopPane.JDesktopPane() constructor.
import java.awt.BorderLayout; // ww w . jav a 2 s .co m import javax.swing.JDesktopPane; import javax.swing.JFrame; import javax.swing.JInternalFrame; import javax.swing.JLabel; import javax.swing.JLayeredPane; public class Main { public static void main(String args[]) { JFrame f = new JFrame("Sample"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JLayeredPane desktop = new JDesktopPane(); desktop.setOpaque(false); desktop.add(new SelfInternalFrame("1"), JLayeredPane.POPUP_LAYER); f.add(desktop, BorderLayout.CENTER); f.setSize(300, 200); f.setVisible(true); } } class SelfInternalFrame extends JInternalFrame { public SelfInternalFrame(String s) { getContentPane().add(new JLabel(s), BorderLayout.CENTER); setBounds(50, 50, 100, 100); setResizable(true); setClosable(true); setMaximizable(true); setIconifiable(true); setTitle(s); setVisible(true); } }