}
@Override
public void setValueAt(Object aValue, int row, int column) {
boolean valid = validateCell(aValue, row, column);
TaskOrder order = getOrder(row);
switch (column) {
case 0: order.symbol = aValue.toString(); break;
case 1: order.type = (TaskOrder.Type)aValue; break;
case 2:
if (valid) order.size = Double.parseDouble(aValue.toString());