Expain me what is hashCode() method

[sandip sangale]

1) why to override hashCode() method
we what difference it makes when override.

[Muhammad Khojaye]

See why we need to override hashcode when write equality method in Java here

[Alessandro Ilardo]

The article actually says how to override those methods, not why we should.

[Jesper de Jong]

Alessandro Ilardo wrote:The article actually says how to override those methods, not why we should.

Really? Pitfall #2 in the article explains quite clearly what hashCode() is used for, so this makes it clear when and why you should implement a hashCode() method.