Complete the program, as shown below, that displays head (H) or tail (T) for each of nine coins

(represented by a group of JButton). When a cell is clicked, the coin is flipped. A cell is a JButton.

When the program starts, all cells initially display H. (10 marks)

import java.awt.*;

import javax.swing.*;

____1____; //import the package for event handling

public class CoinButtonDemo ____2____ { //inherit JFrame and implements the listener

private JButton[] buttons;

public CoinButtonDemo() {

super("Flipping coins");

____3____; //set the size to 300 * 200

____4____; //set the close operation to EXIT_ON_CLOSE

setLocationRelativeTo(null);

setLayout(____5____); //set the layout manager to GridLayout

buttons = new JButton[9];

for(int i=0; i

buttons[i] = ____6____; //initialize the buttons

add(buttons[i]);

____7____;

//register the listener to the buttons

}

setVisible(true);

}

public void actionPerformed(ActionEvent ae) {

JButton clicked = ____8____; //get the source component

if(Math.random() < 0.5) {

clicked.setText("T");

} else {

clicked.setText("H");

}

}

____9____ {

//method header for the main

____10____;

//create the GUI object

}

}