Following are the programs to implement JDesktopPane
1. Java Program to demonstrate a simple JDesktopPane
Below is the implementation of the JDesktopPane:
Java
// Java Program to demonstrate // Simple JDesktopPane import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; // Driver Class public class JDesktopPaneExample { // main function public static void main(String[] args) { // Create and show the main application frame SwingUtilities.invokeLater(() -> { JFrame parentframe = new JFrame("JDesktopPane Example"); parentframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); parentframe.setSize(800, 600); // Create a JDesktopPane to manage internal frames JDesktopPane desktopPane = new JDesktopPane(); parentframe.add(desktopPane, BorderLayout.CENTER); // Create and add two internal frames createInternalFrame(desktopPane, "Child Frame 1"); createInternalFrame(desktopPane, "Child Frame 2"); // Display the main application frame parentframe.setVisible(true); }); } private static void createInternalFrame(JDesktopPane desktopPane, String title) { // Create a new internal frame JInternalFrame internalFrame = new JInternalFrame(title, true, true, true, true); internalFrame.setBounds(50, 50, 300, 200); // Add a text area with the frame's title as content JTextArea textArea = new JTextArea(title); internalFrame.add(textArea); // Create a "Close" button to dispose of the internal frame JButton closeButton = new JButton("Close"); closeButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // Dispose of the internal frame when the "Close" button is clicked internalFrame.dispose(); } }); // Create a panel for the "Close" button and add it to the internal frame JPanel buttonPanel = new JPanel(); buttonPanel.add(closeButton); internalFrame.add(buttonPanel, BorderLayout.SOUTH); // Add the internal frame to the JDesktopPane and make it visible desktopPane.add(internalFrame); internalFrame.setVisible(true); } } |
Output :
2. Java Program to Demonstrate the IS_CLOSED_PROPERTY Field in JDesktopPane
Below is the implementation of the JDesktopPane:
Java
// Java Program to Demonstrate // IS_CLOSED_PROPERTY Field in JDesktopPane import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; public class JDesktopPaneExample { public static void main(String[] args) { // Create and display the main application frame SwingUtilities.invokeLater(() -> { JFrame parentFrame = new JFrame("JDesktopPane Example"); parentFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); parentFrame.setSize(800, 600); // Create a JDesktopPane to manage internal frames JDesktopPane desktopPane = new JDesktopPane(); parentFrame.add(desktopPane, BorderLayout.CENTER); // Create and add an internal frame JInternalFrame internalFrame = createInternalFrame(desktopPane, "Frame 1"); desktopPane.add(internalFrame); // Add a PropertyChangeListener to the internal frame to detect closure internalFrame.addPropertyChangeListener(JInternalFrame.IS_CLOSED_PROPERTY, new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { boolean isClosed = (Boolean) evt.getNewValue(); if (isClosed) { System.out.println("Internal frame is closed."); } else { System.out.println("Internal frame is not closed."); } } }); // Display the main application frame parentFrame.setVisible(true); }); } private static JInternalFrame createInternalFrame(JDesktopPane desktopPane, String title) { // Create a new internal frame JInternalFrame internalFrame = new JInternalFrame(title, true, true, true, true); internalFrame.setBounds(50, 50, 300, 200); // Add a text area to the internal frame JTextArea textArea = new JTextArea(title); internalFrame.add(textArea); // Create a "Close" button to dispose of the internal frame JButton closeButton = new JButton("Close"); closeButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { internalFrame.dispose(); } }); // Create a panel for the "Close" button and add it to the internal frame JPanel buttonPanel = new JPanel(); buttonPanel.add(closeButton); internalFrame.add(buttonPanel, BorderLayout.SOUTH); // Make the internal frame visible internalFrame.setVisible(true); return internalFrame; } } |
Output:
If We Close the Internal Frame in the Pane then it will report to terminal.
Java JDesktopPane
Java JDesktopPane is a part of the Swing library that helps Java Developers to make desktop-like applications, It allows the developers to manage and organize child frames within a parent frame. In this article, we are going to see some constructors, methods, fields, and some examples of JDesktopPane.
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