Hashcode

Question

what is meant by hashcode

Answer 1

Ah, let me Google that for you 😁

'The hashCode() Method
The value returned by hashCode() is the object's hash code, which is the object's memory address in hexadecimal.
By definition, if two objects are equal, their hash codemust also be equal. If you override the equals()method, you change the way two objects are equated and Object's implementation of hashCode() is no longer valid. Therefore, if you override the equals()method, you must also override the hashCode()method as well.'
from https://docs.oracle.com/javase/tutorial/java/IandI/objectclass.html