Java Program to Implement LinkedHashMap API

The LinkedHashMap is just like HashMap with an additional feature of maintaining an order of elements inserted into it. HashMap provided the advantage of quick insertion, search, and deletion but it never maintained the track and order of insertion which the LinkedHashMap provides where the elements can be accessed in their insertion order.

To implement LinkedHashMap  API first we create a class “ LinkedHashMapImplmentation” and create all the methods of the  LinkedHashMap in this class.

Implementation of the  LinkedHashMap API:

Size of the LinkedHashMap: 3

The key value pairs of LinkedHashMap:
Anuj : 500
Ashok : 460
Aakansha : 495

LinkedHashMap contains Aakansha: true

LinkedHashMap contains 450: false

Size of the LinkedHashMap: 0