Assignment Title: Employee Management System Implementation in Java

Instructions: In this assignment, you are required to create a Java program that implements an Employee

Management System using object$-$oriented principles. The system should consist of the following classes:

Employee Class:

Attributes: employeeID, name, department, salary, designation

Methods:

Accessor and mutator methods for all attributes

equals method to compare employees based on their designations

addBonus method to calculate the salary with a default bonus of $$\frac{200}{?}$ month

Manager Class $($Subclass of Employee$)$:

Methods:

Override the addBonus method to calculate the salary with a bonus of $$\frac{300}{?}$ month

Clerk Class $($Subclass of Employee$)$:

Methods:

Override the addBonus method to calculate the salary with a bonus of $$\frac{100}{?}$ month

Main Class:

Testbed for the system

Create instances of Employee, Manager, and Clerk with sample data

Demonstrate the use of methods like display, addBonus, and calculateDeductions

Calculate and display the total deductions for all employees based on their leave records $($considering $20$ working days per month$)$

Your program should showcase the following concepts:

Inheritance: Use of subclass $($Manager and Clerk$)$ extending superclass $($Employee$)$

Method Overriding: Override the addBonus method in subclasses to customize behavior

Polymorphism: Use of overridden methods to achieve different behaviors based on the object's type

Submit your Java program with appropriate comments and test cases to demonstrate the functionality of the Employee Management System.