Java Program to calculate Salary of an Employee

Program

import java.util.*;
public class EmpSalary
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		System.out.println("Enter the basic pay");
		int basic = sc.nextInt();
		Salary sal = new Salary();
		sal.calculateTotal(basic);
	}
}
class Salary
{
	private double da;
	private double hra;
	private double oth;
	void calculateTotal(int basic)
	{
		da = 0.90 * basic;
		hra = 0.20 * basic;
		oth = 0.10 * basic;
		double total = basic + da + hra + oth;
		System.out.println("Basic Salary:\t" + basic);
		System.out.println("Dearness Allowance:\t" + da);
		System.out.println("House Rent Allowance:\t" + hra);
		System.out.println("Other Allowances:\t" + oth);
		System.out.println("Total Salary is: " + total);
	}
}

This Java program calculates the total salary of an employee based on their basic pay and allowances such as Dearness Allowance (DA), House Rent Allowance (HRA), and Other Allowances (OTH).

1. Main Class (EmpSalary):

   • Contains the main() method, which is the entry point of the program.
   • Prompts the user to input the basic pay of the employee using the Scanner class.
   • Creates an object of the Salary class and calls the calculateTotal() method, passing the basic pay as an argument.

2. Class Salary:

   • Contains the logic to calculate the total salary.
   • Private member variables: da, hra, and oth (for different allowances).
   • Method calculateTotal(int basic):
     • Dearness Allowance (DA): Calculated as 90% of the basic pay (0.90 * basic).
     • House Rent Allowance (HRA): Calculated as 20% of the basic pay (0.20 * basic).
     • Other Allowances (OTH): Calculated as 10% of the basic pay (0.10 * basic).
     • The total salary is calculated as the sum of the basic pay, DA, HRA, and OTH.
     • The method prints a detailed breakdown of the basic pay, allowances, and the total salary.

Key Concepts Demonstrated:

1. Modularity:

   • The program separates the salary calculation logic into a separate Salary class and method (calculateTotal), making the code reusable and maintainable.

2. Encapsulation:

   • The private member variables (da, hra, oth) are encapsulated within the Salary class to restrict direct access.

3. User Input Handling:

   • The Scanner class is used to take user input for the basic pay dynamically.

4. Basic Arithmetic and Percentages:

   • The allowances are calculated as percentages of the basic pay.

Output

Enter the basic pay
25000
Basic Salary:	25000
Dearness Allowance:	22500.0
House Rent Allowance:	5000.0
Other Allowances:	2500.0
Total Salary is: 55000.0