dbTable.getTable().getColumnModel().addColumnModelListener(new TableColumnModelListener(){

 

	public void columnMarginChanged(ChangeEvent e)

	{

	 // Your code goes here..	

	}

 

	public void columnSelectionChanged(ListSelectionEvent e){}

	public void columnAdded(TableColumnModelEvent e){}

	public void columnMoved(TableColumnModelEvent e){}

	public void columnRemoved(TableColumnModelEvent e){}

});