Java HashMap: hashcode() and equals() method Lets override default implemenation of hashcode() and equals(): Lets put this Country objects in hashmap: hashcode() and equals() contracts: equals(): hashcode(): Key points to remember: In this post ,we will try to understand hashcode() and...
This is one of the tricky Java interview questions, which some of you might have encountered. There is a very subtle difference betweengetClass()and instanceof operator, which can cause potential issues with respect to theequals()method. Coming to the point, the key difference between them is...
Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes. 0 - This is a modal window. ...