I need help debugging this. the answers that exist already under the textbook is incorrect.

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class DebugFourteen2 extends JFrame implements ItemListener

{

FlowLayout flow = new FlowLayout();

JComboBox payMethod = new JComboBox();

JLabel payList = new JLabel("Pay List");

JTextField totFees = new JTextField(25);

String pctMsg = new String("per cent will be added to your bill");

int[] fees = {5, 2, 0};

int feePct = 0;

String output;

//int fee = 0;

public DebugFourteen2()

{

super("Pay List");

setDefaultClosetOperation(JFrame.EXIT_ON_CLOSE);

setLayout(flow);

payMethod.addItemListener(this);

add(payList);

add(payMethod);

payMethod.addItems("Credit card");

payMethod.addItems("Check");

payMethod.addItems("Cash");

add(totFees);

}

public static void main(String[] arguments)

{

//JFrame cframe = new DebugFourteen2();

DebugFourteen2 cframe = new

DebugFourteen2();

cframe.setSize(350,150);

cframe.setVisible(true);

}

//@Override

public void itemStateChanged(ItemEvent list)

{

Object source = list.getSource();

if(source == payMethod)

{

int fee = payMethod.getSelectedIndex();

feePct = fees[fee];

output = feePct + " " + pctMsg;

totFees.setText(output);

}

}

}