I can't seem to find it. What is it? THANKS!
Asked
Active
Viewed 133 times
-3
-
No, the underlying code; – farm ostrich Nov 21 '11 at 19:37
-
possible duplicate of [How is hashCode() calculated in Java](http://stackoverflow.com/questions/2427631/how-is-hashcode-calculated-in-java) – Brian Roach Nov 21 '11 at 19:39
3 Answers
4
Set does not generate any hashcodes. It depends on hashcodes defined for the objects put into the Set.
Any class can override public int hashCode().
Paul Croarkin
- 14,496
- 14
- 79
- 118
2
If you look at the source for Object you can see this is done in native code. The Set interface just calls hashCode() on the objects in the set.
Paul Bellora
- 54,340
- 18
- 130
- 181
Kane
- 4,047
- 2
- 24
- 33
1
As "Set" is just an interface, the hashcode will be generated by the actual implementation you're using, e.g. HashSet or TreeSet (or actually, AbstractSet).
ziesemer
- 27,712
- 8
- 86
- 94
-
Bhesh - you're probably right - though I guess there were 2 different ways to read the question: The hash code generation of the Set itself, or how the Set generates hashcodes for its objects - the later of which would only be applicable if using HashSet, which isn't mentioned. Maybe the OP can clarify the request? – ziesemer Nov 21 '11 at 19:47
-
Your point absolutely makes sense. Problem is with the OP's body which is not even the half of the title itself. – Bhesh Gurung Nov 21 '11 at 20:03