what is the Debugging solution for this java programming problem? (DebuggingFour

Question

what is the Debugging solution for this java programming problem? (DebuggingFourteen 4 java progamming 7th)

// Beverage selector

// Milk and cola are $2

// all other drinks are $1

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class DebugFourteen4 extend JFrame implements ItemListener

{

FlowLayout flow = new FlowLayout();

String title = new String("Beverage Selector");

Font bigFont = new Font("Arial", Font.PLAIN, 24);

ButtonGroup drinkGrp = new ButtonGroup();

JCheckBox cola = new JCheckBox("Cola",false);

JCheckBox lemon = new JCheckbox("Lemonade",false);

JCheckBox tea = new JCheckBox("Iced tea");

JCheckBox milk = new JCheckBox("Milk");

JCheckBox coffee = new JcheckBox("Coffee");

JTextField totPrice = new JTextField(10);

String output;

int totalPrice = 0;

public DebugFourteen4()

{

super("Beverage Selector");

setDefaultcloseOperation(EXIT_ON_CLOSE);

setLayout(flow);

add(cola);

add(lemon);

add(teas);

add(milk);

add(coffee);

add(totPrice);

coffee.adItemListener(this);

drinkGrp.add(cola);

drinkGrp.add(lemon);

drinkGrp.add(tea);

drinkGrp.add(milk);

drinkGrp.add(coffee);

totPrice.setText("0");

}

public static void main(String[] arguments)

{

JFrame bFrame = new DebugFourteen4();

bFrame.setVisible(true);

}

public void itemStateChanged(ItemEvent check)

{

Object source = check.getItem();

if(source == cola)

{

int select = check.getStateChange();

if(select = ItemEvent.SELECTED)

totalPrice += 2;

else if(select == ItemEvent.DESELECTED)

totalPrice += 2;

output = " " + totalPrice;

totPrice.setText(output);

}

if(source == lemon)

{

int select = check.getStateChange();

if(select == SELECTED)

totalPrice += 1;

else if(select == ItemEvent.DESELECTED)

    totalPrice -= 1;

output = " " + totalPrice;

totPrice.setText(output);

}

if(source == tea)

{

int select = check.getStateChange();

if(select == ItemEvent.SELECTED)

totalPrice += 1;

else if(select == ItemEvent.DESELECTED)

    totalPrice = 1;

output = " " + totalPrice;

totPrice.setText(output);

}

if(course == milk)

{

int select = check.getStateChange();

if(select == ItemEvent.SELECTED)

totalPrice += 20;

else if(select == ItemEvent.DESELECTED)

totalPrice -= 2;

output = " " + totalPrice;

totPrice.setText(output);

}

if(source == coffee)

{

int select = check.getStateChange();

if(select == ItemEvent.SELECTED)

totalPrice += 1;

else if(select == ItemEvent.DESELECTED)

totalPrice -= 1;

output = " " + totalPrice;

totPrice.setText(output);

}

}

}

Explanation / Answer

This id debugged code. Marked bold where corrections are done

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class DebugFourteen4 extends JFrame implements ItemListener

{

FlowLayout flow = new FlowLayout();

String title = new String("Beverage Selector");

Font bigFont = new Font("Arial", Font.PLAIN, 24);

ButtonGroup drinkGrp = new ButtonGroup();

JCheckBox cola = new JCheckBox("Cola",false);

JCheckBox lemon = new JCheckBox("Lemonade",false);

JCheckBox tea = new JCheckBox("Iced tea");

JCheckBox milk = new JCheckBox("Milk");

JCheckBox coffee = new JCheckBox("Coffee");

JTextField totPrice = new JTextField(10);

String output;

int totalPrice = 0;

public DebugFourteen4()

{

    super("Beverage Selector");

    setDefaultCloseOperation(EXIT_ON_CLOSE);

    setLayout(flow);

    add(cola);

    add(lemon);

    add(tea);

    add(milk);

    add(coffee);

    add(totPrice);

    coffee.addItemListener(this);

    drinkGrp.add(cola);

    drinkGrp.add(lemon);

    drinkGrp.add(tea);

    drinkGrp.add(milk);

    drinkGrp.add(coffee);

    totPrice.setText("0");

}

public static void main(String[] arguments)

{

    JFrame bFrame = new DebugFourteen4();

    bFrame.setVisible(true);

}

public void itemStateChanged(ItemEvent check)

{

   Object source = check.getItem();

   if(source == cola)

   {

     int select = check.getStateChange();

     if(select == ItemEvent.SELECTED)

       totalPrice += 2;

     else if(select == ItemEvent.DESELECTED)

     totalPrice += 2;

     output = " " + totalPrice;

     totPrice.setText(output);

   }

   if(source == lemon)

   {

     int select = check.getStateChange();

     if(select == ItemEvent.SELECTED)

       totalPrice += 1;

     else if(select == ItemEvent.DESELECTED)

       totalPrice -= 1;

     output = " " + totalPrice;

     totPrice.setText(output);

   }

   if(source == tea)

   {

     int select = check.getStateChange();

     if(select == ItemEvent.SELECTED)

       totalPrice += 1;

     else if(select == ItemEvent.DESELECTED)

       totalPrice = 1;

     output = " " + totalPrice;

     totPrice.setText(output);

   }

   if(source == milk)

   {

     int select = check.getStateChange();

     if(select == ItemEvent.SELECTED)

       totalPrice += 20;

     else if(select == ItemEvent.DESELECTED)

     totalPrice -= 2;

     output = " " + totalPrice;

     totPrice.setText(output);

    }

    if(source == coffee)

    {

      int select = check.getStateChange();

      if(select == ItemEvent.SELECTED)

         totalPrice += 1;

      else if(select == ItemEvent.DESELECTED)

         totalPrice -= 1;

      output = " " + totalPrice;

      totPrice.setText(output);

    }

}

}

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