what is the purpose of hash code and equals method in hashset
what is the purpose of hash code and equals method in hashset
To that matter , hashCode() and equals() method in any Object , is a way of specifying what it means for two objects to be equal .
Say you have two integers 2 and 3 . You simply say they are not equal . But when it comes to Objects , say an Employee object , you have to very clearly put down when you can say two employee objects are equal (or not equal) . hashCode() and equals() are the methods that put down this logic
Say you have two integers 2 and 3 . You simply say they are not equal . But when it comes to Objects , say an Employee object , you have to very clearly put down when you can say two employee objects are equal (or not equal) . hashCode() and equals() are the methods that put down this logic
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