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Last Updated on 4th January 2021 at 09:24 amIntroduction In this Java HashMap example I am going to tell you how to use custom object as a key in HashMap. In custom object as a key in HashMap example, I Continue reading
What is HashSet HashSet extends AbstractSet and is an implementation of Set interface. HashSet also implements Serializable and Cloneable interfaces. HashSet is backed by hash table(actually HashMap instance), i.e., the HashSet uses hash table(HashMap) to store collection elements. Like HashMap, Continue reading
Last Updated on 6th June 2020 at 07:58 pmIntroduction Here we will discuss how to override equals() and hashCode() method in Java. In Java language the important contract is whenever you override one the methods (equals() and hashCode()), then you Continue reading