Hmm, I know it's a bit of an esoteric language, but Java has a method called "hashCode()" which is common to all objects, and does indeed return an int value.
That's points 2 and 3 covered, I'll leave it up to you whether or not you want to split hairs on what's part of Java's "API" (a sensible reader would probably take that as the Java Class Library in the case of Java).
That's points 2 and 3 covered, I'll leave it up to you whether or not you want to split hairs on what's part of Java's "API" (a sensible reader would probably take that as the Java Class Library in the case of Java).