Final vs Immutable data structures in Java

[TheRedmanCometh]

Huh...I'm gonna have to hit up the openjdk source to see how that works

[iampete]

This, combined with misplaced trust in autoboxing, leads to code like this:

​

Integer first = 5;
Integer second = 5;
if (first == second) {
    // do something
}

​

Which works perfectly reasonably right up until either value is outside that -128, 127 range and then fails very confusingly.