import javax.swing.*; 
 import java.awt.*; 
 import javax.swing.event.*; 
 import java.awt.event.*; 


      public class ExceptionDemo extends JFrame {    // inherit JFrame 

      private JButton button1 = new JButton("Let Java handle it");   // declare and create a button
      private JButton button2 = new JButton("Catch it");   // declare and create a button
 
      int theArray[] = new int[10];  // create an integer array

      /** 
       * Constructor sets up the window and creates a toolbar 
       */ 
        public ExceptionDemo() { 
      // 
      // setup the frames banner/title bar 
      // 
           super("Exception Demo : array out of bound");  // call JFrame's constructor and give it a title 
           setSize(300,200);  // set the width of the window to 300 pixels, height to 200. 
           setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // exit the whole program when this frame is closed 
      //
      // Add the buttons to the frame's content pane, for each button, create a
      // separate inner class object as a listener and tell the button about it.
      //
         getContentPane().add("West",button1);   // add button 1
         button1.addActionListener(new Button1Listener());  // create its listener and tell it

         getContentPane().add("Center",button2);
         button2.addActionListener(new Button2Listener());

       }
 /**
  * Inner class to handle button 1
  */ 
   class Button1Listener implements ActionListener{ 
      public void actionPerformed(ActionEvent event)  { 
       System.out.println("We are intentionally creating an ArrayIndexOutofBoundsException"); 
       System.out.println("The exception is not caught, instead, this is what JAVA gives you!");

       theArray[11] = 42;  // index beyond the array
      } 
    } 
 /**
  * Inner class to handle button 2
  */ 
   class Button2Listener implements ActionListener{ 
      public void actionPerformed(ActionEvent event)  { 
       System.out.println("We are intentionally creating an ArrayIndexOutofBoundsException"); 
       System.out.println("The exception is caught, and a message box popped up");

       try{
         theArray[11] = 42; // index beyond the array
       } 
       catch (ArrayIndexOutOfBoundsException e) {
          JOptionPane.showMessageDialog(ExceptionDemo.this,"Bad index for theArray", 
         "ArrayIndexOutOfBoundException",JOptionPane.ERROR_MESSAGE);  // popup an error message 
       }

      } 
    } 
 
 
      /*********************************************************************** 
       * 
       *  Main routine, Note, this routine can be in any class. 
       */ 
        public static void main(String[] arguments){ 

          ExceptionDemo fr = new ExceptionDemo();  // create the frame 
          fr.setVisible(true);         // allow it to be seen 

        } 
      }