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    <p>The <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/Action.html"><code>Action</code></a> interface is an effective approach "if you have two or more components that perform the same function," as discussed in <a href="http://download.oracle.com/javase/tutorial/uiswing/misc/action.html"><em>How to Use Actions</em></a>. In particular, an <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/Action.html"><code>Action</code></a> would allow your buttons and menu items to use the same code.</p> <p>Addendum: The example below shows how a <code>JMenu</code> and a <code>JToolBar</code> can share the same <a href="http://download.oracle.com/javase/6/docs/api/javax/swing/Action.html"><code>Action</code></a> for each of several files.</p> <pre><code>import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.io.File; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JToolBar; /** @see http://stackoverflow.com/questions/4038605 */ public class FileMenu { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { new FileMenu().create(); } }); } void create() { File userDir = new File(System.getProperty("user.dir")); File[] files = userDir.listFiles(); JMenu menu = new JMenu("Recent Files"); JToolBar toolBar = new JToolBar(JToolBar.VERTICAL); JLabel label = new JLabel(" ", JLabel.CENTER); for (File f : files) { if (f.isFile() &amp;&amp; !f.isHidden()) { RecentFile rf = new RecentFile(f, label); menu.add(new JMenuItem(rf.getAction())); toolBar.add(rf.getAction()); } } JMenuBar menuBar = new JMenuBar(); menuBar.add(menu); JFrame f = new JFrame("FileMenu"); f.setJMenuBar(menuBar); f.add(toolBar, BorderLayout.CENTER); f.add(label, BorderLayout.SOUTH); f.pack(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setLocationRelativeTo(null); f.setVisible(true); } } class RecentFile extends AbstractAction { private final File file; private final JLabel label; public RecentFile(final File file, final JLabel label) { this.file = file; this.label = label; this.putValue(Action.NAME, file.getName()); this.putValue(Action.SHORT_DESCRIPTION, file.getAbsolutePath()); } public void actionPerformed(ActionEvent e) { label.setText(file.getName()); } public Action getAction() { return this; } } </code></pre>
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    1. POSwing: link toggle buttons together with a button group, along with corresponding menu items
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    1. CO+1, Actions are just as easy to write as an ActionListener but provide far more overall functionality.
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    2. COCan you explain why you add (rf.getAction()) and not just (rf) to the toolbar in this code: `toolBar.add(rf.getAction());`, as well as in the line above?
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    3. CO@userunknown: Good question; it looks like I adapted this from another example that used composition rather than extension.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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