Another method for loading Pez

Using the fill() method will set pezAmount equal to MAX_PEZ. This will never overfill as it will always be equal to the max amount.

Using the fill(int) method will attempt to add the specified quantity to the dispenser. There are many ways to accomplish this, but in this tutorial (from what I recall) wants to implement a loop of some sort. This will allow you to insert one Pez at a time, then stop once you have filled to the MAX_PEZ quantity.

In a perfect world, you would never attempt to add more Pez than the maximum amount. So you could just simply do pezAmount = pezAmount + quantity and you would never have issues. However, we do not live in a perfect world, so you need a way to prevent overfilling. You could check to see if pezAmount + quantity is greater than the maximum amount. If not, add the specified quantity. If so, set the Pez amount to the maximum.

That solution works, however, the problem with this is that it makes you think less about how that physical object is intended to work in the real world (adding one Pez at a time, hence the loop). Which is what object-oriented programming is all about, especially when you're just learning. Also, as I mentioned earlier, there are a bunch of ways to implement a solution to this. The one in the video is just one of these many solutions. Thinking outside of the box like this is a good thing -- continue to do this and to challenge the instructor's methods.