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Java Java Objects Delivering the MVP Validating and Normalizing User Input

Jasper Kop
Jasper Kop
10,423 Points
Posted by Jasper Kop
Jasper Kop
10,423 Points

How can the normalizedGuess and the applyGuess have both a declaration of the char letter?

In the 'normalizeGuess' we define the char letter but in the applyGuess there is also a char defined as letter.

I assume that both char's are in a different method and so in a different scope(?) but why haven't you chosen to declare the variable char on forehand, so you don't have to declare it twice?

I really would like to get my head around it, because I understand the code but I would have never used the double declaration with the same name.

1 Answer

Mark Sebeck
MOD
Mark Sebeck
Treehouse Moderator 37,905 Points
Mark Sebeck
Mark Sebeck
Treehouse Moderator 37,905 Points

Hi Jasper. Yes you are correct. Each method is it's own scope so variables declared in a method are only available to that method. For this example that is what the instructor wants. He only wants the letter that is passed into the method. If you declare letter outside the method it would be global like the answer String. For answer that makes sense since it will never change and needs used by other methods. For letter he only wants it used and to be available inside the methods.