Problem reading .txt-file into JTable

Question

My problem is that I�m reading a .txt-file into a J-Table. It all goes okay, the FileChooser opens and the application reads the selected file (line). But then I get a Null Pointer Exception and the JTable does not get updated with the text from the file.
Here�s my code (I kept it simple, and just want to read the text from the .txt-file to the first cell of the table.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import java.util.*;
import java.lang.*;
import java.io.*;
public class TeamTable extends JFrame implements ActionListener, ItemListener                {
static JTable table;
     // constructor
public TeamTable()                {
super( "Invoermodule - Team Table" );
setSize( 740, 365 );
          // setting the rownames
ListModel listModel = new AbstractListModel()                     {
String headers[] = {"Team 1", "Team 2", "Team 3", "Team 4", "Team 5", "Team 6", "Team 7", "Team 8", "Team 9",
"Team 10", "Team 11", "Team 12", "Team 13", "Team 14", "Team 15", "Team 16", "Team 17", "Team 18"};
public int getSize() { return headers.length; }
public Object getElementAt(int index) { return headers[index]; }
          // add listModel & rownames to the table
          DefaultTableModel defaultModel = new DefaultTableModel(listModel.getSize(),3);
          JTable table = new JTable( defaultModel );
          // setting the columnnames and center alignment of table cells
          int width = 200;
          int[] vColIndex = {0,1,2};
          String[] ColumnName = {"Name Team", "Name Chairman", "Name Manager"};
          TableCellRenderer centerRenderer = new CenterRenderer();          
          for (int i=0; i < vColIndex.length;i++)          {
                         table.getColumnModel().getColumn(vColIndex).setHeaderValue(ColumnName[i]);
                         table.getColumnModel().getColumn(vColIndex[i]).setPreferredWidth(width);
                         table.getColumnModel().getColumn(vColIndex[i]).setCellRenderer(centerRenderer);
          table.setFont(new java.awt.Font("Dialog", Font.ITALIC, 12));
          // force the header to resize and repaint itself
          table.getTableHeader().resizeAndRepaint();
          // create single component to add to scrollpane (rowHeader is JList with argument listModel)
          JList rowHeader = new JList(listModel);
          rowHeader.setFixedCellWidth(100);
          rowHeader.setFixedCellHeight(table.getRowHeight());
          rowHeader.setCellRenderer(new RowHeaderRenderer(table));
          // add to scroll pane:
          JScrollPane scroll = new JScrollPane( table );
          scroll.setRowHeaderView(rowHeader); // Adds row-list left of the table
          getContentPane().add(scroll, BorderLayout.CENTER);
          // add menubar, menu, menuitems with evenlisteners to the frame.
          JMenuBar menubar = new JMenuBar();
          setJMenuBar (menubar);
          JMenu filemenu = new JMenu("File");
          menubar.add(filemenu);
          JMenuItem open = new JMenuItem("Open");
          JMenuItem save = new JMenuItem("Save");
          JMenuItem exit = new JMenuItem("Exit");
          open.addActionListener(this);
          save.addActionListener(this);
          exit.addActionListener(this);
          filemenu.add(open);
          filemenu.add(save);
          filemenu.add(exit);
          filemenu.addItemListener(this);
// ActionListener for ActionEvents on JMenuItems.
public void actionPerformed(ActionEvent e) {       
     String open = "Open";
     String save = "Save";
     String exit = "Exit";
          if (e.getSource() instanceof JMenuItem)     {
               JMenuItem source = (JMenuItem)(e.getSource());
               String x = source.getText();
                    if (x == open)          {
                         System.out.println("open file");
                    // create JFileChooser.
                    String filename = File.separator+"tmp";
                    JFileChooser fc = new JFileChooser(new File(filename));
                    // set default directory.
                    File wrkDir = new File("C:/Documents and Settings/Erwin en G-M/Mijn documenten/Erwin/Match Day");
                    fc.setCurrentDirectory(wrkDir);
                    // show open dialog.
                    int returnVal =     fc.showOpenDialog(null);
                    File selFile = fc.getSelectedFile();
                    if(returnVal == JFileChooser.APPROVE_OPTION) {
                    System.out.println("You chose to open this file: " +
               fc.getSelectedFile().getName());
                    try          {
                         BufferedReader invoer = new BufferedReader(new FileReader(selFile));
                         String line = invoer.readLine();
                         System.out.println(line);
                         // THIS IS WHERE IT GOES WRONG, I THINK
                         table.setValueAt(line, 1, 1);
                         table.fireTableDataChanged();
                    catch (IOException ioExc){
                    if (x == save)          {
                         System.out.println("save file");
                    if (x == exit)          {
                         System.out.println("exit file");
// ItemListener for ItemEvents on JMenu.
public void itemStateChanged(ItemEvent e) {       
          String s = "Item event detected. Event source: " + e.getSource();
          System.out.println(s);
     public static void main(String[] args)                {
          TeamTable frame = new TeamTable();
          frame.setUndecorated(true);
     frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
          frame.addWindowListener( new WindowAdapter()           {
               public void windowClosing( WindowEvent e )                {
     System.exit(0);
frame.setVisible(true);
* Define the look/content for a cell in the row header
* In this instance uses the JTables header properties
class RowHeaderRenderer extends JLabel implements ListCellRenderer           {
* Constructor creates all cells the same
* To change look for individual cells put code in
* getListCellRendererComponent method
RowHeaderRenderer(JTable table)      {
JTableHeader header = table.getTableHeader();
setOpaque(true);
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setHorizontalAlignment(CENTER);
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
* Returns the JLabel after setting the text of the cell
     public Component getListCellRendererComponent( JList list,
Object value, int index, boolean isSelected, boolean cellHasFocus)      {
setText((value == null) ? "" : value.toString());
return this;

Answer 1

My problem is that I�m reading a .txt-file into a J-Table. It all goes okay, the FileChooser opens and the application reads the selected file (line). But then I get a Null Pointer Exception and the JTable does not get updated with the text from the file.
Here�s my code (I kept it simple, and just want to read the text from the .txt-file to the first cell of the table.
A MORE READABLE VERSION !
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import java.util.*;
import java.lang.*;
import java.io.*;
public class TeamTable extends JFrame implements ActionListener, ItemListener                {
static JTable table;
     // constructor
    public TeamTable()                {
        super( "Invoermodule - Team Table" );
        setSize( 740, 365 );
          // setting the rownames
        ListModel listModel = new AbstractListModel()                     {
            String headers[] = {"Team 1", "Team 2", "Team 3", "Team 4", "Team 5", "Team 6", "Team 7", "Team 8", "Team 9",
            "Team 10", "Team 11", "Team 12", "Team 13", "Team 14", "Team 15", "Team 16", "Team 17", "Team 18"};
            public int getSize() { return headers.length; }
            public Object getElementAt(int index) { return headers[index]; }
          // add listModel & rownames to the table
          DefaultTableModel defaultModel = new DefaultTableModel(listModel.getSize(),3);
          JTable table = new JTable( defaultModel );
          // setting the columnnames and center alignment of table cells
          int width = 200;
          int[] vColIndex = {0,1,2};
          String[] ColumnName = {"Name Team", "Name Chairman", "Name Manager"};
          TableCellRenderer centerRenderer = new CenterRenderer();          
          for (int i=0; i < vColIndex.length;i++)          {
                         table.getColumnModel().getColumn(vColIndex).setHeaderValue(ColumnName[i]);
                         table.getColumnModel().getColumn(vColIndex[i]).setPreferredWidth(width);
                         table.getColumnModel().getColumn(vColIndex[i]).setCellRenderer(centerRenderer);
          table.setFont(new java.awt.Font("Dialog", Font.ITALIC, 12));
          // force the header to resize and repaint itself
          table.getTableHeader().resizeAndRepaint();
          // create single component to add to scrollpane (rowHeader is JList with argument listModel)
          JList rowHeader = new JList(listModel);
          rowHeader.setFixedCellWidth(100);
          rowHeader.setFixedCellHeight(table.getRowHeight());
          rowHeader.setCellRenderer(new RowHeaderRenderer(table));
          // add to scroll pane:
          JScrollPane scroll = new JScrollPane( table );
          scroll.setRowHeaderView(rowHeader); // Adds row-list left of the table
          getContentPane().add(scroll, BorderLayout.CENTER);
          // add menubar, menu, menuitems with evenlisteners to the frame.
          JMenuBar menubar = new JMenuBar();
          setJMenuBar (menubar);
          JMenu filemenu = new JMenu("File");
          menubar.add(filemenu);
          JMenuItem open = new JMenuItem("Open");
          JMenuItem save = new JMenuItem("Save");
          JMenuItem exit = new JMenuItem("Exit");
          open.addActionListener(this);
          save.addActionListener(this);
          exit.addActionListener(this);
          filemenu.add(open);
          filemenu.add(save);
          filemenu.add(exit);
          filemenu.addItemListener(this);
// ActionListener for ActionEvents on JMenuItems.
public void actionPerformed(ActionEvent e) {       
     String open = "Open";
     String save = "Save";
     String exit = "Exit";
          if (e.getSource() instanceof JMenuItem)     {
               JMenuItem source = (JMenuItem)(e.getSource());
               String x = source.getText();
                    if (x == open)          {
                         System.out.println("open file");
                    // create JFileChooser.
                    String filename = File.separator+"tmp";
                    JFileChooser fc = new JFileChooser(new File(filename));
                    // set default directory.
                    File wrkDir = new File("C:/Documents and Settings/Erwin en G-M/Mijn documenten/Erwin/Match Day");
                    fc.setCurrentDirectory(wrkDir);
                    // show open dialog.
                    int returnVal =     fc.showOpenDialog(null);
                    File selFile = fc.getSelectedFile();
                    if(returnVal == JFileChooser.APPROVE_OPTION) {
                    System.out.println("You chose to open this file: " +
               fc.getSelectedFile().getName());
                    try          {
                         BufferedReader invoer = new BufferedReader(new FileReader(selFile));
                         String line = invoer.readLine();
                         System.out.println(line);
                         // THIS IS WHERE IT GOES WRONG, I THINK
                         table.setValueAt(line, 1, 1);
                         table.fireTableDataChanged();
                    catch (IOException ioExc){
                    if (x == save)          {
                         System.out.println("save file");
                    if (x == exit)          {
                         System.out.println("exit file");
// ItemListener for ItemEvents on JMenu.
public void itemStateChanged(ItemEvent e) {       
          String s = "Item event detected. Event source: " + e.getSource();
          System.out.println(s);
     public static void main(String[] args)                {
          TeamTable frame = new TeamTable();
          frame.setUndecorated(true);
     frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
          frame.addWindowListener( new WindowAdapter()           {
               public void windowClosing( WindowEvent e )                {
     System.exit(0);
frame.setVisible(true);
* Define the look/content for a cell in the row header
* In this instance uses the JTables header properties
class RowHeaderRenderer extends JLabel implements ListCellRenderer           {
* Constructor creates all cells the same
* To change look for individual cells put code in
* getListCellRendererComponent method
RowHeaderRenderer(JTable table)      {
JTableHeader header = table.getTableHeader();
setOpaque(true);
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setHorizontalAlignment(CENTER);
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
* Returns the JLabel after setting the text of the cell
     public Component getListCellRendererComponent( JList list,
Object value, int index, boolean isSelected, boolean cellHasFocus)      {
setText((value == null) ? "" : value.toString());
return this;