return ((columnIndex == 3) && (((Call) filteredCallerData.get(rowIndex))
return ((columnIndex == 4) && (((Call) filteredCallerData.get(rowIndex))
	public boolean isCellEditable(int rowIndex, int columnIndex) {		return ((columnIndex == 3) && (((Call) filteredCallerData.get(rowIndex))				.getPhoneNumber() != null));	}