[HELP] Updating/Refreshing JTable connected to database

I've been trying to update/refresh a JTable but still no success. I'm using an AbstractTableModel. What am I doing wrong here?

	   	
                model = new AbstractTableModel()
	        {


	        public int getColumnCount()
	        {
	        	return columnNames.length;
	        }

	        public String getColumnName(int column)
	        {

	        	return columnNames[column];
	        }

	        public int getRowCount()
	        {
	        	return rowData.length;
	        }

	        public Object getValueAt(int row, int column)
	        {
	        	return rowData[row][column];

	        }

	        public void setValueAt(Object value, int row, int column)
	        {
	        	rowData[row][column] = value;
	        	fireTableCellUpdated(row, column);
		    }

	        public boolean isCellEditable(int row, int column)
	        {
	        	return false;
	        }

   		 };

   		model.addTableModelListener(new TableModelListener()
   		{
	        public void tableChanged(TableModelEvent e)
	        {
				//Don't know what to add.
	        }
   		});

Thank you in advance for the help..