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Overriding equals and hashcode for an Object.

 
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The projects that deals with People , for example say , a Employee Object .

For example say a Employee Object


Is it becomes necessary to override the equals and hashcode for that Object .

I am sorry if this is a dumb question , because i have never overridden these methods for any of my Project till i did .

So please tell me .
 
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Suppose you have to use Employee object as the key of a map, how would you acheive it ? The solution for this problem will give you the answer.

And it is not necessary to overide the two methods always , only in some scenarios , like the one stated above.
 
Ravi Kiran Va
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Thank you very much sourav Kaustav Ganguly .
 
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Kaustav Ganguly wrote:And it is not necessary to overide the two methods always , only in some scenarios , like the one stated above.


Although this is true it is highly recommended to override both methods because otherwise you get unpredictable results when using maps and sets.
 
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