Thread: 2DArry from Textbox input (pls hlp)

This is for a school assignment. I am unable to populate my 2D array with user input from GUI textbox and then have it return values from the array in a text area. There are some calculations that need to be performed, but I haven't gotten that far because I cannot get this 2D array to work right. I am new at Java, so any help is apprieciated. Below is my code: (pls forgive the long variable names, like i said, i'm new @ this)

/**
 * This application provides a GUI where the user enters the session
 * minutes and rates.
 */
 
package gtt1t1;
//import Java class
import javax.swing.JFrame;
/**
 *
 * @author MDH
 */
public class Gtt1T1 {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        //create new Gtt1T1Frame
        JFrame frame = new Gtt1T1Frame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
 
}

/*
 * This is the Frame class for Gtt1T1 package
 * all methods and classes included.
 */
package gtt1t1;
//import Java classes
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
 
/**
 *
 * @author Monica Dorsey-Hull
 */
public class Gtt1T1Frame extends JFrame
{
    //frame variables
    static final int FRAME_WIDTH = 200;
    static final int FRAME_HEIGHT = 400;
    static final int AREA_ROWS = 10;
    static final int AREA_COLS = 12;
    static final int SESSION_MINS = 0;
    static final int SESSION_RATE = 0;
    public JLabel minsLabel;
    public JTextField minsField;
    public JLabel rateLabel;
    public JTextField rateField;
    public JTextArea reportArea;
    public JButton enterButton;
    public JButton reprtButton;
    public JButton quitButton;
    public JPanel panel;
    public static int minInt;
    public static int rateInt;
    public int index = 0;
    int[][] tArray = new int[index][2];
    public String txtArray;
 
 
    public Gtt1T1Frame()
    {
        //text area variables & parameters
        reportArea = new JTextArea(AREA_ROWS, AREA_COLS);
        reportArea.setEditable(false);
        //methods for the GUI to operate
        createTextField();
        createButton();
        createPanel();
        setSize(FRAME_WIDTH, FRAME_HEIGHT); //GUI size
    }
 
    private void createTextField()
    {
        minsLabel = new JLabel("Session Minutes"); //label for minutes
        int fwidth = 6; //label width for all text fields
        minsField = new JTextField(fwidth); //text field for minites
        minsField.setText("30"); //preset value of text field
        rateLabel = new JLabel("Session Rate    "); //label for payrate
        rateField = new JTextField(fwidth);
        rateField.setText("15"); //preset value of text field
    }
 
    private void createButton()
    {
        enterButton = new JButton("Enter"); //create Enter button
        class AddEnterListener implements ActionListener
        {
            public void actionPerformed(ActionEvent event)
            {
                Scanner input = new Scanner(System.in);
                //convert text input to integer for array
                int minInt = Integer.parseInt(minsField.getText());
                int rateInt = Integer.parseInt(rateField.getText());
 
                //input array values in a loop
                while (index > 0)
                {
                    tArray[index][0] = input.nextInt(minInt);
                    tArray[index][1] = input.nextInt(rateInt);
                }
                index++;
                //checks for incorrect values entered
                if (minInt < 0) {
                    IllegalArgumentException exception
                            = new IllegalArgumentException("Invalid Value");
                    throw exception;
                }
                if (rateInt < 0) {
                    IllegalArgumentException exception
                            = new IllegalArgumentException("Invalid Value");
                    throw exception;
                }
                //resets the text fields for new values
                minsField.setText("");
                rateField.setText("");
 
            }
        }
        ActionListener eListener = new AddEnterListener();
        enterButton.addActionListener(eListener);
 
        quitButton = new JButton("Quit");
        class AddQuitListener implements ActionListener
        {
            public void actionPerformed(ActionEvent event)
            {
                System.exit(0); //closes GUI
            }
        }
        ActionListener qListener = new AddQuitListener();
        quitButton.addActionListener(qListener);
 
        reprtButton = new JButton("Report");
        class AddReportListener implements ActionListener
        {
            public void actionPerformed(ActionEvent event)
            {
                //prints array items in text area
                for (int cols = 0; cols <= 2; cols++){
                String txtArray = Integer.toString(tArray[index][cols]);
                reportArea.append(txtArray + "\n");}
 
            }
        }
        ActionListener rListener = new AddReportListener();
        reprtButton.addActionListener(rListener);
    }
 
    private void createPanel()
    {
        panel = new JPanel();
        panel.add(minsLabel);
        panel.add(minsField);
        panel.add(rateLabel);
        panel.add(rateField);
        panel.add(enterButton);
        panel.add(quitButton);
        panel.add(reprtButton);
        JScrollPane scrollPane = new JScrollPane(reportArea);
        panel.add(scrollPane);
        add(panel);
    }
 
 
}

As long as the variable names are meaningful, long names are good

Could you describe what you mean by "2D arrays don't work right"? If you're getting any exceptions, please post the exception code in its entirety.

Also, in the future please surround your code with highlight tags. I've modified this post accordingly this time.