Java for Testers - Part 232 - Map interface

In this video, I have explained and practically demonstrated the below things on Map Interface of Collections Framework in Java:

* Map is another root interface of Collections Framework
* Its not the child interface of Collection (I)
* Representing a group of objects as key value pairs
* Both key and values are objects
* Keys are unique (i.e. cannot be duplicated)
* Values can be duplicated
* Each Key Value Pair is called on Entry
* Group of Entries is known as Map
* Has several child classes and interfaces
* Difference between Collection and Map
* Group of Key Value Pairs
* Map has its own specific methods which look different from Set
* Map specific methods
* Objects cant be created