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Hashcode in Java

Well Hashcode is a method of object class, we can say it is a bucket number for a particular object.

Hashcode method return bucket number for the object.

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.

Object class Hashcode method.

public native int hashCode();

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