// set up a Help menu with About MenuItem on it
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
...
JMenuBar mb = new JMenuBar();
frame.setJMenuBar( mb );

JMenu help = new JMenu( "Help", /* tearoff */ false);
help.getAccessibleContext().setAccessibleDescription( "Help" );

mb.add( help );

JMenuItem about = new JMenuItem( "About" );
about.setActionCommand( "About" );
help.add( about );

about.addActionListener
(
new ActionListener()
   {
   /**
    * Handle Menu Selection Request
    *
    * @param e event giving details of selection
    */
   public void actionPerformed( ActionEvent e )
      {
      // pop up About box
      ...
      } // end ActionListener
   } // end anonymous class
); // end addActionListener line