MATLAB Object-Oriented Programming

BankAccount Class Discussion

function obj = loadobj(s)

if isstruct(s)

accNum = s.AccountNumber;

initBal = s.AccountBalance;

obj = BankAccount(accNum,initBal);

else

obj.AccountListener = AccountManager.addAccount(s);

end

end

loadobj method:

• If the load operation fails, create the
  object from a struct.


• Recreates the listener using the
  newly created BankAccount object
  as the source.

For more information on saving and

loading objects, see “Save and Load

Process for Objects” on page 13-2

end

end

End of static methods block

End of classdef

Expand for Class Code

classdef BankAccount < handle
properties (Access = ?AccountManager)
AccountStatus = 'open'
end
properties (SetAccess = private)
AccountNumber
AccountBalance
end
properties (Transient)
AccountListener
end
events
InsufficientFunds
end
methods
function BA = BankAccount(accNum,initBal)
BA.AccountNumber = accNum;
BA.AccountBalance = initBal;
BA.AccountListener = AccountManager.addAccount(BA);
end
function deposit(BA,amt)
BA.AccountBalance = BA.AccountBalance + amt;
if BA.AccountBalance > 0
BA.AccountStatus = 'open';
end
end
function withdraw(BA,amt)
if (strcmp(BA.AccountStatus,'closed')&& BA.AccountBalance <= 0)
disp(['Account ',num2str(BA.AccountNumber),' has been closed.'])
return

Developing Classes — Typical Workflow