Identify and Correct the following Programming Errors:

The following program displays two buttons, OK and Cancel, in the window. A message is displayed on the console to indicate which button is clicked. Find and correct few mistakes in this program. Please list the line number and show how to correct mistakes.

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1 import javax.swing.*;

2 import java.awt.*;

3 import java.awt.event.*;

4

5 public class Test extends JFrame implements ActionListener

6 {

7 /**Default constructor*/

8 public TestActionEvent() {

9 // Create two buttons

10 JButton jbtOk = new JButton("OK");

11 JButton jbtCancel = new JButton("Cancel");

12

13 // Set the window title

14 super("TestActionEvent");

15

16 // Set FlowLayout manager to arrange the components

17 // inside the frame

18 setLayout(new FlowLayout());

19

20 // Add buttons to the frame

21 add(jbtOk);

22 add(jbtCancel);

23 setSize(100, 80);

24 setVisible(true);

25 } //end constructor

26

27 /**Main method*/

28 public static void main(String[ ] args) {

29 TestActionEvent frame = new TestActionEvent();

30 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

31 }//end main method

32

33 /**This method will be invoked when a button is clicked*/

34 public void actionPerformed() {

35 if (event.getSource() == jbtOk) {

36 System.out.println("The OK button is clicked");

37 }

38 else if (event.getSource() == jbtCancel) {

39 System.out.println("The Cancel button is clicked");

40 }

41 }//end actionPerformed method

42 }//end class