? getColumnName()

Question

I can't figure out why the column names are not showing up on my table.
Here is the code.
package mytablemain;
import javax.swing.table.AbstractTableModel;
import java.util.List;
import java.util.ArrayList;
class MyTableModel extends AbstractTableModel {
String[] columnNames = {"Testing", "This", "Table",
"Model", "Today", "Six"};
protected final List<ItemFile> dataList = new ArrayList<ItemFile>();
public int getRowCount() {
return dataList.size();
public int getColumnCount() {
return columnNames.length;
@Override public String getColumnName(int col) {
return columnNames[col];
@Override public Object getValueAt(int row, int col) {
ItemFile item = (ItemFile)dataList.get(row);
switch(col) {
case 0: return item.one;
case 1: return item.two;
case 2: return item.three;
case 3: return item.four;
case 4: return item.five;
case 5: return item.six;
default: assert false; return null;
public void addItem(ItemFile item){
dataList.add(item);
fireTableDataChanged();
public ItemFile getItem(int a) {
return dataList.get(a);
public List<ItemFile> getList(){
return dataList;
public void clearList() {
dataList.clear();
fireTableDataChanged();
} // end class
[\code]//snipet
private MyTableModel tableModel = new MyTableModel();
JTable table = new JTable(tableModel);
table.setPreferredScrollableViewportSize(new Dimension(900, 400));
table.setFillsViewportHeight(true);
JScrollPane scrollPane = new JScrollPane(table);
[\code]

Answer 1

If future, please post Swings questions in the [Swing forum.|http://forums.sun.com/forum.jspa?forumID=57]
In future please post a SSCCE . Your code works for me, at least in my SSCCE:
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
@SuppressWarnings("serial") class MyTableModel extends AbstractTableModel {
    private String[] columnNames = {"ONE", "TWO"};
    @Override public Object getValueAt(int row, int col) {return null;}
    @Override public String getColumnName(int col) {return columnNames[col];}
    @Override public int getColumnCount() {return columnNames.length;}
    @Override public int getRowCount() {return 17;}
public class ModelTest {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable(){
            public void run() {
                JTable table = new JTable(new MyTableModel());
                table.setPreferredScrollableViewportSize(new Dimension(200, 100));
                table.setFillsViewportHeight(true);
                JFrame f = new JFrame();
                f.add(new JScrollPane(table));
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.pack();
                f.setLocationRelativeTo(null);
                f.setVisible(true);
}