Create In Java for a Phone book PLEASE USE hashCode()

A HashTable, which is the ADT HashTable. This is the class which contains the PhoneBooks collection of data (all of the People objects in the PhoneBook), as well as the operations which can be performed on that collection of data.

The key is the implementation of a hashCode() method, which translates a key value into a numeric index value, which identifies the location in which an item will be stored in the hash table.

The phonebook contains the add, delete, find, change, quit, save and restore methods and does not necessarily need to be written.