Disable Menuitem in Java Swing Example

 import java.awt.*; 
 import javax.swing.*; 
 import java.awt.event.*; 
 public class JavaExampleMenuDisableInJApplet extends JApplet implements ActionListener 
       { 
          JMenuBar MnuBar = new JMenuBar(); 
          JMenu MnuOne = new JMenu("File"); 
          JMenu MnuTwo = new JMenu("Edit"); 
          JMenuItem MnuItmOne = new JMenuItem("New..."), 
          MnuItmTwo = new JMenuItem("Open..."), 
          MnuItmThree = new JMenuItem("Exit"), 
          MnuItmFour = new JMenuItem("Disable Bottom Item"), 
          MnuItmFive = new JMenuItem("Enable Bottom Item"), 
          MnuItmSix = new JMenuItem("Enabled Item"); 
          public void init() 
           { 
              MnuOne.add(MnuItmOne); 
              MnuOne.add(MnuItmTwo); 
              MnuOne.addSeparator(); 
              MnuOne.add(MnuItmThree); 
              MnuItmOne.setActionCommand("You Choose New"); 
              MnuItmTwo.setActionCommand("You Choose Open"); 
              MnuItmOne.addActionListener(this); 
              MnuItmTwo.addActionListener(this); 
              MnuTwo.add(MnuItmFour); 
              MnuTwo.add(MnuItmFive); 
              MnuTwo.add(MnuItmSix); 
              MnuItmFour.setActionCommand("You Choose Cut"); 
              MnuItmFive.setActionCommand("You Choose Copy"); 
              MnuItmFour.addActionListener(this); 
              MnuItmFive.addActionListener(this); 
              MnuBar.add(MnuOne); 
              MnuBar.add(MnuTwo); 
              setJMenuBar(MnuBar); 
            } 
              public void actionPerformed(ActionEvent e1) 
                { 
                    JMenuItem MnuItm = (JMenuItem)e1.getSource(); 
                    if(MnuItm == MnuItmFour) 
                   { 
                           MnuItmSix.setText("Disabled Item"); 
                           MnuItmSix.setEnabled(false); 
                       } 
                           if(MnuItm == MnuItmFive) 
                         { 
                                 MnuItmSix.setText("Enabled Item"); 
                                 MnuItmSix.setEnabled(true); 
                             } 
               } 
  } 
 /*<APPLET  CODE = JavaExampleMenuDisableInJApplet.class WIDTH = 350  HEIGHT = 280 ></APPLET>*/