Excellent. Though, you don’t need the last line in there since you build the full name in getFullName.
Ok now you really blew my mind. So the full name is built in getFullName even if that method isn’t called? 
You have only two internal variables, lastName and firstName. In your constructor, getFullName, getFirstName, and getLastName methods you only use those two variables, so in your set* methods you only need to update those two variables.
no, but your return statement there is return firstName + " " + lastName
you don’t need to update firsrAndLast as you don’t use it anywhere else
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