What is hashcode in JAVA..?

What is hashcode in JAVA..?
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Last Answer : Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc. The value received from hashcode() is used as bucket number for storing elements. This bucket number is the address ... () is true or false, or decide if element could be added in the set or not.

There are two objects a and b with same hashcode. I am inserting these two objects inside a hashmap. hMap.put(a,a); hMap.put(b,b); where a.hashCode()==b.hashCode() Now tell me how many objects will be there inside the hashmap?

Description : There are two objects a and b with same hashcode. I am inserting these two objects inside a hashmap. hMap.put(a,a); hMap.put(b,b); where a.hashCode()==b.hashCode() Now tell me how many objects will be there inside the hashmap?

Last Answer : Ans. There can be two different elements with the same hashcode. When two elements have the same hashcode then Java uses the equals to further differentation. So there can be one or two objects depending on the content of the objects.

Which class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

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