(Urgent help needed) how to read txt file and store the data into 2D-array?

Question

Hi, I have a GUI which allow to choose file from the file chooser, and when "Read file" button is pressed, I want to show the array data into the textarea.
The sample data is like this followed:
-0.0007     -0.0061     0.0006
-0.0002     0.0203     0.0066
0     0.2317     0.008
0.0017     0.5957     0.0008
0.0024     1.071     0.0029
0.0439     1.4873     -0.0003
I want my program to scan through and store these data into 2D array.
However for some reason, my source code issues errors, and I don't know what's wrong with it, seems to have a problem in StringTokenizer though. Can anybody help me?
Thanks in advance.
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.StringTokenizer;
public class FileReduction1 extends JFrame implements ActionListener{
// GUI features
private BufferedReader fileInput;
private JTextArea textArea;
private JButton openButton, readButton,processButton,saveButton;
private JTextField textfield;
private JPanel pnlfile;
private JPanel buttonpnl;
private JPanel buttonbar;
// Other fields
private File fileName;
private String[][] data;
private int numLines;
public FileReduction1(String s) {
super(s);
// Content pane
     Container cp = getContentPane();
     cp.setLayout(new BorderLayout());     
// Open button Panel
pnlfile=new JPanel(new BorderLayout());
     textfield=new JTextField();
     openButton = new JButton("Open File");
openButton.addActionListener(this);
pnlfile.add(openButton,BorderLayout.WEST);
     pnlfile.add(textfield,BorderLayout.CENTER);
     readButton = new JButton("Read File");
readButton.addActionListener(this);
     readButton.setEnabled(false);
pnlfile.add(readButton,BorderLayout.EAST);
     cp.add(pnlfile, BorderLayout.NORTH);
     // Text area     
     textArea = new JTextArea(10, 100);
cp.add(new JScrollPane(textArea),BorderLayout.CENTER);
processButton = new JButton("Process");
//processButton.addActionListener(this);
saveButton=new JButton("Save into");
//saveButton.addActionListener(this);
buttonbar=new JPanel(new FlowLayout(FlowLayout.RIGHT));
buttonpnl=new JPanel(new GridLayout(1,0));
buttonpnl.add(processButton);
buttonpnl.add(saveButton);
buttonbar.add(buttonpnl);
cp.add(buttonbar,BorderLayout.SOUTH);
/* ACTION PERFORMED */
public void actionPerformed(ActionEvent event) {
if (event.getActionCommand().equals("Open File")) getFileName();
     if (event.getActionCommand().equals("Read File")) readFile();
/* OPEN THE FILE */
private void getFileName() {
// Display file dialog so user can select file to open
     JFileChooser fileChooser = new JFileChooser();
     fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
     int result = fileChooser.showOpenDialog(this);
     // If cancel button selected return
     if (result == JFileChooser.CANCEL_OPTION) return;
if (result == JFileChooser.APPROVE_OPTION)
     fileName = fileChooser.getSelectedFile();
textfield.setText(fileName.getName());
     if (checkFileName()) {
     openButton.setEnabled(false);
     readButton.setEnabled(true);
     // Obtain selected file
/* READ FILE */
private void readFile() {
// Disable read button
readButton.setEnabled(false);
// Dimension data structure
     getNumberOfLines();
     data = new String[numLines][];
     // Read file
     readTheFile();
     // Output to text area     
     textArea.setText(data[0][0] + "\n");
     for(int index=0;index < data.length;index++)
for(int j=1;j<data[index].length;j++)
textArea.append(data[index][j] + "\n");
     // Rnable open button
     openButton.setEnabled(true);
/* GET NUMBER OF LINES */
/* Get number of lines in file and prepare data structure. */
private void getNumberOfLines() {
int counter = 0;
     // Open the file
     openFile();
     // Loop through file incrementing counter
     try {
     String line = fileInput.readLine();
     while (line != null) {
     counter++;
          System.out.println("(" + counter + ") " + line);
line = fileInput.readLine();
     numLines = counter;
closeFile();
     catch(IOException ioException) {
     JOptionPane.showMessageDialog(this,"Error reading File",
               "Error 5: ",JOptionPane.ERROR_MESSAGE);
     closeFile();
     System.exit(1);
/* READ FILE */
private void readTheFile() {
// Open the file
int row=0;
int col=0;
     openFile();
System.out.println("Read the file");     
     // Loop through file incrementing counter
     try {
String line = fileInput.readLine();
     while (line != null)
StringTokenizer st=new StringTokenizer(line);
while(st.hasMoreTokens())
data[row][col]=st.nextToken();
System.out.println(data[row][col]);
col++;
row++;
closeFile();
catch(IOException ioException) {
     JOptionPane.showMessageDialog(this,"Error reading File",
               "Error 5: ",JOptionPane.ERROR_MESSAGE);
     closeFile();
     System.exit(1);
/* CHECK FILE NAME */
/* Return flase if selected file is a directory, access is denied or is
not a file name. */
private boolean checkFileName() {
     if (fileName.exists()) {
     if (fileName.canRead()) {
          if (fileName.isFile()) return(true);
          else JOptionPane.showMessageDialog(null,
                    "ERROR 3: File is a directory");
     else JOptionPane.showMessageDialog(null,
                    "ERROR 2: Access denied");
     else JOptionPane.showMessageDialog(null,
                    "ERROR 1: No such file!");
     // Return
     return(false);
/* FILE HANDLING UTILITIES */
/* OPEN FILE */
private void openFile() {
     try {
     // Open file
     FileReader file = new FileReader(fileName);
     fileInput = new BufferedReader(file);
     catch(IOException ioException) {
     JOptionPane.showMessageDialog(this,"Error Opening File",
               "Error 4: ",JOptionPane.ERROR_MESSAGE);
System.out.println("File opened");
/* CLOSE FILE */
private void closeFile() {
if (fileInput != null) {
     try {
          fileInput.close();
     catch (IOException ioException) {
     JOptionPane.showMessageDialog(this,"Error Opening File",
               "Error 4: ",JOptionPane.ERROR_MESSAGE);
System.out.println("File closed");
/* MAIN METHOD */
/* MAIN METHOD */
public static void main(String[] args) throws IOException {
     // Create instance of class FileChooser
     FileReduction1 newFile = new FileReduction1("File Reduction Program");
     // Make window vissible
     newFile.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     newFile.setSize(500,400);
newFile.setVisible(true);
Java.lang.NullpointException
at FileReductoin1.readTheFile <FileReduction1.java :172>
at FileReductoin1.readFile <FileReduction1.java :110>
at FileReductoin1.actionPerformed <FileReduction1.java :71>
.

Answer 1

1) Next time use the CODE tags. this is way too much unreadable crap.
2) The problem is your String[][] data.... the only place I see you do anything approching initializing it is
data = new String[numLines][];I think you want to do this..
data = new String[numLines][3];anyway that's why it's blowing up on the line
data[row][col]=st.nextToken();