What exactly does comparing Integers with == do?

Question

EDIT: OK, OK, I misread. I\'m not comparing an int to an Integer. Duly noted.

My SCJP book says:

When == is used to compare a primitive to a

Answer 1

You're not comparing a primitive to a wrapper. You're comparing two wrappers (reference types). == compares object identity, which returns false because they're different objects.