Yeap. I can think of two main uses for Integer: when you have type polymorphism (e.g. my own code often has maps of Object) or nullness. I go on to describe a

Yeap. I can think of two main uses for Integer: when you have type polymorphism (e.g. my own code often has maps of Object) or nullness. I go on to describe a different approach to nullness that suites ints, for example.