Answer:

I don't remember that.

Consistent Application of a Rule

Actually, the amount is $1000. If you had trouble remembering that, you would also have trouble remembering to correctly program it every time a check was processed. Luckily, that "rule" has already been programmed into to the processCheck() access method. By always using the method to deal with a check, the rule will always be correctly applied:

bobsAccount.processCheck( 1400 );  // correctly applies the rule

jillsAccount.processCheck( 4500 ); // correctly applies the rule

If there is a bug in the application of the rule, there is only one place to look for the problem: in the access method.

QUESTION 6:

Another bank charges 10 cents per check for accounts with a balance of more that $500. Our bank needs to do the same in order to keep its customers. How hard will it be to make that change?