I didn't understand the fill(MAX_PEZ); thing we are doing in this video

You have two fill methods:

• with fill(int pezAmount) you can fill the number of pez you want, you just pass the amount you want as a parameter
• with fill() you can fill a fixed number of pez, namely the amount MAX_PEZ

But they both add pez. So both methods have the same logic. The only difference is the amount: one uses a variable to find out how many pez to add, and the other has a preset amount MAX_PEZ instead. The fill() method is like a special case of the fill(int pezAmount) method, where pezAmount is equal to MAX_PEZ.

So why make two separate implementations of the same logic? Instead you implement the logic of how to add pez once, in the more generic method fill(int pezAmount). Then you add another method fill(), and inside that method, you call(int pezAmount) and pass it the fixed value MAX_PEZ as a parameter. That way, if you need to do some changes to the logic of adding pez later, you only need to do it in the method fill(int pezAmount).

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