Can Java's hashCode produce same value for different strings?

Question

Is it possible to have same hashcode for different strings using java\'s hashcode function?or if it is possible then what is the % of its possibility?

Answer 1

Yes(not just in Java, it applies to any language), it can produce the same hash-code for different strings. I am recalling a rule taught by my professor, it might be useful here -

Two same strings/value must have the same hashcode, but the converse is not true.

example in python

>>> hash('same-string')
-5833666992484370527
>>> hash('same-string')
-5833666992484370527

There might be another string which can match the same hash-code, so we can't derive the key using hash-code.

The reason for two different string to have the same hash-code is due to the collision.