Object Oriented Programming using C#
Creating And Using EceptionsFeedback 2If the code was amended to allow for the possible NULL value returned it would work – however this protection is insecure
as it relies on the programmer to spot this potential critical error.When writing the GetClient() method the author was fully aware that a client may not be found and in this case decided
to return a NULL value. However this relies on every programmer who ever uses this method to recognise and protect
against this eventuality.If any programmer using this method failed to protect against a NULL return then their program could crash – potentially
in this case losing the bank large sums of money. Of course in other applications, such as an aircraft control system, a
program crash could have life threatening results.A more secure programming method is required to ensure that that a potential crash situation is always dealt with!Such a mechanism exists - it is a mechanism called ‘exceptions’.By using this mechanism we can trap any potential errors in our code – preventing and managing crash situations.Stand out from the crowd
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