Write a class called Employees with the following details :

Attributes: Employee_id (int), Employee_Name (String), Department (String)

Overloaded constructor Ex: Employees (Employee_id, Employee_Name, Department)

toString() method to return Employees details (Employee_id, Employee_Name, Department)

Write TestHashSet class with main and perform the following operation:

Create 7 Employees objects

Create a HashSet of Employees

Add 7 Employees object to the HashSet.

Print size of HashSet.

Remove an Employee from HashSet

Check if a given Employee is available in the HashSet or not

Remove an Employee from HashSet

Print size of HashSet.

Print the HashSet using forin loop

Print the HashSet using Iterator