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|Core java - Interview Questions and Answers for 'Instinet' - 1 question(s) found - Order By Newest|
|Very Frequently asked. Favorite question in walkins and telephonic interviews. Usually among first few questions. Asked in different variants. Must know for intermediate and expert professionals.Among Top 10 frequently asked questions.|
|Ans. A Class must override the hashCode method if its overriding the equals method.|
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|Like Discuss Correct / Improve  java   collections   hashcode  hash code   equals   collections Asked in 44 Companies intermediate   frequent|
Try 1 Question(s) Test
|Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?|
|Write a class and override the equals and hashcode method ?|
|How many threads can access a concurrent hashmap when the hashcode is overridden and always returns a zero.|
|What is the use of defining equals , compareTo and hashcode methods in a class ? Where are they used ?|