How to sort HashMap based on keys in Java

In this video, we can see How to sort HashMap based on keys.

Solution:
Just use a TreeMap. It implements the SortedMap interface
It automatically sorts the keys it contains.
keySet() which returns a set of keys in ascending order
values() which returns a collection of all values in the ascending order of the corresponding keys.

00:00 Problem and solution
0:26 See coding in Action

We can see in this video below user query addressed, Sort hashmap by key, Also sort hashmap by key and value