An event handling example using inner classes

class FrameMenubar  {
   //Other methods
   private void createGUI(){
      //Other components
      MenuItem about = new MenuItem("About");
      about.addActionListener(new AboutAdapter());
      // other components
   }
   class AboutAdapter implements ActionListener{
      OkBox aboutBox;
      public void actionPerformed(ActionEvent e){
         String topString = new String(copyRight+" "+author+"\n");
         String midString = new String(aboutMidText+"\n");
         //OkBox whose code not shown here is a subclass of
         //java.awt.Dialog. Some variables passed to the
         //OkBox constructor are declared in the enclosing
         //classes.FrameMenuApp is the top-most class which
         //is not shown.
         aboutBox = new OkBox(FrameMenuApp.this,
                              256, // width
                              256, // height
                              aboutBoxTitle,
                              topString+midString,
                              false);
         aboutBox.addActionListener(
            new ActionListener() {//Anonymous class
               public void actionPerformed(ActionEvent e){
                  aboutBox.dispose();
               }
            }
          );
          aboutBox.show();
      }
   }//End of AboutAdapter
}//End of FrameMenubar