JDesktopPane in Java Swing

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Many of today's desktop applications use a multiple-document interface (MDI)-a main window containing other windows-to manage several open documents. Java's JDesktopPane and JInternalFrame classes for implementing multiple-document interfaces. The tutorial is intended for students and professionals who are familiar with basic Java GUI and event handling techniques.

With the JInternalFrame class you can display a JFrame-like window within another window. Usually, you add internal frames to a desktop pane. The desktop pane, in turn, might be used as the content pane of a JFrame. The desktop pane is an instance of JDesktopPane, which is a subclass of JLayeredPane that has added API for managing multiple overlapping internal frames.

You should consider carefully whether to base your program's GUI around frames or internal frames. Switching from internal frames to frames or vice versa is not necessarily a simple task. By experimenting with both frames and internal frames, you can get an idea of the tradeoffs involved in choosing one over the other.

/* =========================================================== File Name : JDesktopPaneDemo.java WebSite : http://javaproglang.blogspot.in/ Facebook : https://www.facebook.com/AdvanceJavaProgramming Twitter ID : https://twitter.com/AdvanceJava Created By : Bintu Chaudhary =========================================================== */ import java.awt.*; import java.awt.event.*; import javax.swing.*; public class JDesktopPaneDemo extends JFrame { public JDesktopPaneDemo() { CustomDesktopPane desktopPane = new CustomDesktopPane(); Container contentPane = getContentPane(); contentPane.add(desktopPane, BorderLayout.CENTER); desktopPane.display(desktopPane); setTitle("JDesktopPaneDemo"); setSize(300,500); setVisible(true); } public static void main(String args[]) { new JDesktopPaneDemo(); } } class CustomDesktopPane extends JDesktopPane { int numFrames = 5, x = 30, y = 30; public void display(CustomDesktopPane dp) { for(int i = 0; i < numFrames ; ++i ) { JInternalFrame jif = new JInternalFrame("Internal Frame " + i , true, true, true, true); jif.setBounds(x, y, 250, 85); Container c1 = jif.getContentPane( ) ; c1.add(new JLabel("JDesktopPane")); dp.add( jif ); jif.setVisible(true); y += 85; } } }

C:\>jdk1.4\bin>javac JDesktopPaneDemo.java
C:\>jdk1.4\bin>java JDesktopPaneDemo

"Output of JDesktopPaneDemo.class"

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Java Swing-II

JOptionPane Class	Input Dialog Boxes	JSliders
JProgressBars	JTables	JTabbedPane
JMenu	JPopupMenu	JToolBar
JFileChooser	JScrollBar	JScrollPane
JRootPane	JTextPane	JTree
JSplitPane	JDesktopPane	JEditorPane