how to compare two hash maps?

Question

How to compare the values in both hash maps with the help of keys ? Since the keys are identical whereas values are\'nt. and return boolean result for each key comparision. like

Answer 1

I was directed here from this (possibly duplicate) question and was surprised to find that Google Guava wasn't mentioned in the answers.

Instead of re-inventing the wheel, use the handy the Maps.difference method.