import javax.swing.JOptionPane;   // for GUI I/O

    public class UsingGUI {
   
   	
       public static void main (String[] args) 
      {
        // String item;
      
      
      // ask the user his/her age
          String item = JOptionPane.showInputDialog (null, "Enter your age", 
            									"A Simple Program", 
            									 JOptionPane.WARNING_MESSAGE);
      
         int entered = Integer.parseInt(item);
      
      
      
      
      // display the message
         JOptionPane.showMessageDialog (null, "I'm not sure you are " +
            									entered + "!", "Danger",
                                       JOptionPane.ERROR_MESSAGE);		
      
      // exit the program
         System.exit(0);
      
      } // end of main method
   
   } // end of class UsingGUI