Java Program to Implement HashTable API

The Hashtable class implements a hash table, which maps keys to values. Any non-null object can be used as a key or as a value. To successfully store and retrieve objects from a hashtable, the objects used as keys must implement the hashCode method and the equals method.  

To implement Hashtable API first, we create a class “Hashtable” and create all the methods of the Hashtable in this class:

The size of the hashTable: 4
Entry Set of the hashTable: 
Chintu=450 
Nikhil=390 
Akshay=280 
Bina=500 

The keys of the HashTable: 
Chintu Nikhil Akshay Bina 
The values of the HashTable:
450 390 280 500 
The hashTable contains Nikhil: true
The size of the hashTable: 0