Need help with method... wrote an addition program... have most of it

Question

Writing an addition program... have most of it below. Need help in getting the program to work.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Ch10program2 extends JFrame implements ActionListener
private static final int FRAME_WIDTH = 750;
private static final int FRAME_HEIGHT = 150;
private static final int BUTTON_HEIGHT = 50;
private static final int BUTTON_WIDTH = 50;
private static final int BUTTON_Y_POSITION = 50;
private static final String EMPTY_STRING = "";
private int XbuttonPosition = 15;
private JButton[] button;
private String[] buttonLabels = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "+", "=", "c"};
private JTextField mytextfield;
private int[] numberOne;
private int[] numberTwo;
private int[] sum;
private int numberCounter = 0;
private boolean adding = false;
public static void main (String[] args)
Ch10program2 frame = new Ch10program2 ();
frame.setVisible (true);
public Ch10program2 ()
Container contentPane = getContentPane ();
// set the frame properties
setSize (FRAME_WIDTH, FRAME_HEIGHT);
setLocation (200, 200);
setTitle ("Big Integer Adder");
setResizable (false);
//set the content pane properties
contentPane.setLayout (null);
//creating each button
button = new JButton [13];
for (int i = 0 ; i < button.length ; i++)
button = new JButton (buttonLabels [i]);
button [i].setBounds (XbuttonPosition, BUTTON_Y_POSITION, BUTTON_WIDTH, BUTTON_HEIGHT);
XbuttonPosition += 55;
button [i].setForeground (Color.blue);
if (i > 9)
button [i].setForeground (Color.red);
contentPane.add (button [i]);
button [i].addActionListener (this);
//set the arrays
numberOne = new int [50];
numberTwo = new int [50];
//set the needed textfield
mytextfield = new JTextField ("");
mytextfield.setBounds (10, 10, 720, 25);
mytextfield.setBorder (BorderFactory.createLoweredBevelBorder ());
mytextfield.setHorizontalAlignment (JTextField.RIGHT);
contentPane.add (mytextfield);
setDefaultCloseOperation (EXIT_ON_CLOSE);
public void actionPerformed (ActionEvent event)
JButton clickedButton = (JButton) event.getSource ();
String oldText = mytextfield.getText ();
if ((event.getActionCommand ()).equals ("+"))
mytextfield.setText (oldText + " + ");
adding = true;
numberCounter = 0;
else if ((event.getActionCommand ()).equals ("="))
mytextfield.setText (oldText + " = ");
addArrays ();
displayArray ();
else if ((event.getActionCommand ()).equals ("c"))
clearText ();
else if (adding == false)
mytextfield.setText (oldText + event.getActionCommand ());
if (numberCounter == 0)
numberOne [numberCounter] = Integer.parseInt (event.getActionCommand ());
else
for (int i = numberOne.length - 1 ; i > 0 ; i--)
numberOne [i] = numberOne [i - 1];
numberOne [0] = Integer.parseInt (event.getActionCommand ());
numberCounter++;
else
mytextfield.setText (oldText + event.getActionCommand ());
if (numberCounter == 0)
numberTwo [numberCounter] = Integer.parseInt (event.getActionCommand ());
else
for (int i = numberTwo.length - 1 ; i > 0 ; i--)
numberTwo [i] = numberTwo [i - 1];
numberTwo [0] = Integer.parseInt (event.getActionCommand ());
numberCounter++;
oldText = mytextfield.getText ();
public void addArrays ()
int temp = 0;
int carriedDigit = 0;
for (int i = 0 ; i < 50 ; i++)
temp = carriedDigit + numberOne [i] + numberTwo [i];
if (temp > 10)
sum [i] = (temp - 10);
carriedDigit = 1;
else
sum [i] = temp;
public void displayArray ()
private void clearText ()
mytextfield.setText (EMPTY_STRING);

Answer 1

I don't know what you want to do
but i have taken your program to get the GUI then the logic is your's
You try solving it.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Ch10program2 extends JFrame implements ActionListener
private static final int FRAME_WIDTH = 750;
private static final int FRAME_HEIGHT = 150;
private static final int BUTTON_HEIGHT = 50;
private static final int BUTTON_WIDTH = 50;
private static final int BUTTON_Y_POSITION = 50;
private static final String EMPTY_STRING = "";
private int XbuttonPosition = 15;
private JButton[] button;
private String[] buttonLabels = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "+", "=", "c"};
private JTextField mytextfield;
private int[] numberOne;
private int[] numberTwo;
private int[] sum;
private int numberCounter = 0;
private boolean adding = false;
public static void main (String[] args)
Ch10program2 frame = new Ch10program2 ();
frame.setVisible (true);
public Ch10program2 ()
Container contentPane = getContentPane ();
// set the frame properties
setSize (FRAME_WIDTH, FRAME_HEIGHT);
setLocation (200, 200);
setTitle ("Big Integer Adder");
setResizable (false);
//set the content pane properties
contentPane.setLayout (null);
//creating each button
button = new JButton [13];
for (int i = 0 ; i < button.length ; i++)
button[i] = new JButton (buttonLabels);
button[i].setBounds (XbuttonPosition, BUTTON_Y_POSITION, BUTTON_WIDTH, BUTTON_HEIGHT);
XbuttonPosition += 55;
button[i].setForeground (Color.blue);
if (i > 9)
button[i].setForeground (Color.red);
contentPane.add (button[i]);
button[i].addActionListener (this);
//set the arrays
numberOne = new int [50];
numberTwo = new int [50];
//set the needed textfield
mytextfield = new JTextField ("");
mytextfield.setBounds (10, 10, 720, 25);
mytextfield.setBorder (BorderFactory.createLoweredBevelBorder ());
mytextfield.setHorizontalAlignment (JTextField.RIGHT);
contentPane.add (mytextfield);
setDefaultCloseOperation (EXIT_ON_CLOSE);
public void actionPerformed (ActionEvent event)
JButton clickedButton = (JButton) event.getSource ();
String oldText = mytextfield.getText ();
if ((event.getActionCommand ()).equals ("+"))
mytextfield.setText (oldText + " + ");
adding = true;
numberCounter = 0;
else if ((event.getActionCommand ()).equals ("="))
mytextfield.setText (oldText + " = ");
addArrays ();
displayArray ();
else if ((event.getActionCommand ()).equals ("c"))
clearText ();
else if (adding == false)
mytextfield.setText (oldText + event.getActionCommand ());
if (numberCounter == 0)
numberOne [numberCounter] = Integer.parseInt (event.getActionCommand ());
else
for (int i = numberOne.length - 1 ; i > 0 ; i--)
numberOne[i] = numberOne [i - 1];
numberOne [0] = Integer.parseInt (event.getActionCommand ());
numberCounter++;
else
mytextfield.setText (oldText + event.getActionCommand ());
if (numberCounter == 0)
numberTwo [numberCounter] = Integer.parseInt (event.getActionCommand ());
else
for (int i = numberTwo.length - 1 ; i > 0 ; i--)
numberTwo[i] = numberTwo [i - 1];
numberTwo [0] = Integer.parseInt (event.getActionCommand ());
numberCounter++;
oldText = mytextfield.getText ();
public void addArrays ()
int temp = 0;
int carriedDigit = 0;
for (int i = 0 ; i < 50 ; i++)
temp = carriedDigit + numberOne[i] + numberTwo[i] ;
if (temp > 10)
sum[i] = (temp - 10);
carriedDigit = 1;
else
sum[i] = temp;
public void displayArray ()
private void clearText ()
mytextfield.setText (EMPTY_STRING);
All The Best