StackOverflow2013

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copied!<ol> <li><p>Create a JWindow (or an undecorated JFrame) with a JPanel. Leave the JWindow invisible, initially. (The wiring of this new JPanel to the same data model used by the original JPanel is left as an exercise.)</p></li> <li><p>When your maximize-panel button's ActionListener executes, it must:</p> <p>2.1. Update the (invisible) JWindow's location and size to match the (visible) JFrame's.</p> <p>2.2. Make your JFrame invisible.</p> <p>2.3. Make your JWindow visible.</p></li> <li><p>When your unmaximize-panel button's ActionListener executes, it must:</p> <p>3.1. Update the (invisible) JFrame's location and size to match the (visible) JWindow's.</p> <p>3.2. Make your JWindow invisible.</p> <p>3.3. Make your JFrame visible</p></li> </ol> <p>Example:</p> <pre><code>package stackoverflow; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.HeadlessException; import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MaximizingPanelApp extends JFrame { private JPanel framePanel; private JPanel windowPanel; private JFrame maximizedFrame; public static void main(String[] args) { JFrame appFrame = new MaximizingPanelApp(); appFrame.setVisible( true ); } public MaximizingPanelApp() throws HeadlessException { super( "Application" ); setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE ); initialize(); } private void initialize() { // JFrame { Container container = getContentPane(); container.setLayout( new BorderLayout() ); framePanel = new JPanel(); framePanel.setBackground( Color.ORANGE ); container.add( framePanel, BorderLayout.CENTER ); JButton button = new JButton( new MaximizeAction() ); container.add( button, BorderLayout.SOUTH ); setSize( 400, 300 ); } // JWindow { maximizedFrame = new JFrame(); Container container = maximizedFrame.getContentPane(); container.setLayout( new BorderLayout() ); windowPanel = new JPanel(); windowPanel.setBackground( Color.ORANGE ); container.add( windowPanel, BorderLayout.CENTER ); JButton button = new JButton( new UnMaximizeAction() ); container.add( button, BorderLayout.SOUTH ); maximizedFrame.setSize( getSize() ); maximizedFrame.setUndecorated( true ); } } private class MaximizeAction extends AbstractAction { private MaximizeAction() { super( "Maximize" ); } public void actionPerformed(ActionEvent e) { maximizedFrame.setSize( getSize() ); maximizedFrame.setLocation( getLocation() ); setVisible( false ); maximizedFrame.setVisible( true ); } } private class UnMaximizeAction extends AbstractAction { private UnMaximizeAction() { super( "Un-Maximize" ); } public void actionPerformed(ActionEvent e) { setLocation( maximizedFrame.getLocation() ); setSize( maximizedFrame.getSize() ); maximizedFrame.setVisible( false ); maximizedFrame.dispose(); setVisible( true ); } } } </code></pre>

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