}//deleteService
//Utility method to get user input and update attributes of a service
private void updateService(UserInterface ui, Service aService
, bool retainOldValue)
{
try
{
String input;
//Get value for code if it has not already been set
if (aService.getCode() == null) //code may not be changed
{
input = ui.promptForString("Code: ");
aService.setCode(input);
}
//get value for name
input = ui.promptForString("Name: ");
if (input.Length == 0 && retainOldValue)
{
aService.setName(aService.getName()); //ensure valid name
}
else
{
aService.setName(input);
}
//get value for fee
double fee;
if (retainOldValue)
{
fee = ui.promptForDouble("Fee: ", aService.getFee());
}
else
{
fee = ui.promptForDouble("Fee: ");
}
aService.setFee(fee);
}
catch (ArgumentException ex)
{
ui.errorMessage(ex.Message);
ui.message("Current details:");
ui.message(aService.toFormattedString());
ui.message("\nPlease repeat input. "
+ "Press Enter for details that are correct.");
updateService(ui, aService, true); //Give the user another chance
}
}//updateService