// Set up a Help Menu with an About MenuItem on it.
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
...

MenuBar mb = frame.getMenuBar();
if ( mb == null )
   {
   mb = new MenuBar();
   frame.setMenuBar( mb );
   }

Menu help = mb.getHelpMenu();
if ( help == null )
   {
   help = new Menu( "Help", /* tearoff */ false );
   mb.setHelpMenu( help );
   }

help.add( new MenuItem( "About" ) );
help.addActionListener
(
new ActionListener()
   {
   /**
    * Handle Menu Selection Request
    *
    * @param e event giving details of selection
    */
   public void actionPerformed( ActionEvent e )
      {

      String command = e.getActionCommand();
      if ( command.equals( "About" ) )
         {
         // pop up about help box
         ...
         } // end if
      } // end actionPerformed
   } // end anonymous class
); // end addActionListener