Is it possible to update a value of a key in HashMap in Java?

You can update like this if you are reading data form a dataset :

This way you can generalize better and update the value.

This post comes from my answer on Quora https://www.quora.com/Is-it-possible-to-update-a-value-of-a-key-in-HashMap-in-Java/answer/Alket-Cecaj?srid=n9bS