Example.java

import java.util.*;
class Example{
	public static void main(String [] args){
		Scanner input = new Scanner(System.in);
		
		System.out.println("------------------------------------------------------------------------");
		System.out.println("|                     SALARY INFORMATION SYSTEM                        |");
		System.out.println("------------------------------------------------------------------------");
		System.out.println();
		System.out.println();
		
		int calTax = 1;
		int calBonus = 2;
		int calLoan = 3;
		System.out.printf("%10s%d%s %s %n","[",calTax,"]","Calculate Income Tax");
		System.out.printf("%10s%d%s %s %n","[",calBonus,"]","Calculate Annual Bonus");
		System.out.printf("%10s%d%s %s %n","[",calLoan,"]","Calculate Loan amount");
		
		System.out.print("Enter an option to continue >");
		int option = input.nextInt();
		
		switch(option){
			
		  case 1:
		  
		System.out.println("------------------------------------------------------------------------");
		System.out.printf("| %40s                             | %n","Calculate Income Tax");
		System.out.println("------------------------------------------------------------------------");
		System.out.println();
		System.out.print("Input Employee name   -");
		String name = input.next();
		System.out.print("Input Employee salary -");
		double salary = input.nextDouble();
		System.out.println();
		
		double taxAmount = 41667;
		
		if(100000>=salary){
			taxAmount =taxAmount*0;
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else if(100001<=salary & salary<=141667){
			taxAmount =Math.round(taxAmount*0.06-(141667-salary)*0.06);
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else if(141667<=salary & salary<=183333){
			taxAmount =Math.round(taxAmount*0.18-(183333-salary)*0.12);
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else if(183333<=salary & salary<=225000){
		    taxAmount =Math.round(taxAmount*0.36-(225000-salary)*0.18);
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else if(225000<=salary & salary<=266667){
		    taxAmount =Math.round(taxAmount*0.6-(266667-salary)*0.24);
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else if(266667<=salary & salary<=308333){
		    taxAmount =Math.round(taxAmount*0.9-(308333-salary)*0.3);
		    System.out.println("You have to pay Income Tax per month: "+taxAmount);
		}else{
			//375000 is fixed
	        taxAmount =Math.round((salary-308333)*0.36+37500);
	        System.out.println("You have to pay Income Tax per month: "+taxAmount);
	    }
		break;
		
		  case 2:
		System.out.println("------------------------------------------------------------------------");
		System.out.println("|                     Calculate Annual Bonus                           |");
		System.out.println("------------------------------------------------------------------------");
		System.out.println();
		System.out.print("Input Employee name   -");
		String name2 = input.next();
		System.out.print("Input Employee salary -");
		double salary2 = input.nextDouble();
		System.out.println();
		double bonus;		
		
		if(100000>salary2){
			bonus = 5000;
		    System.out.println("Annual bonus "+bonus);
		}else if(100000<=salary2 & salary2<=199999){
			bonus = salary2*0.1;
		    System.out.println("Annual bonus "+bonus);
		}else if(200000<=salary2 & salary2<=299999){
			bonus = salary2*0.15;
		    System.out.println("Annual bonus "+bonus);
		}else if(300000<=salary2 & salary2<=399999){
		    bonus = salary2*0.2;
		    System.out.println("Annual bonus "+bonus);
		}else{
	        bonus = salary2*0.35;
		    System.out.println("Annual bonus "+bonus);
	    }     
		break;
		case 3:
		System.out.println("------------------------------------------------------------------------");
		System.out.println("|                     Calculate Loan amount                            |");
		System.out.println("------------------------------------------------------------------------");
		System.out.println();
		
		System.out.print("Input Employee name   -");
		String name3 = input.next();
        System.out.print("Input Employee salary -");
		double salary3 = input.nextDouble();
		if(salary3<50000){
			System.out.printf("%10s %n","You can not get a loan because your salary lessthan Rs.50 000...");
		}else{
			
		System.out.print("Input number of year  :");
        double years = input.nextDouble();
		
		if(years>5){
		    System.out.printf("%10s %n","The maximum number of years of the year is 5");
	   	}else{
			double n = years*12;
		    double r = 0.15;
		    double monthlyInstallment = salary3*0.6;
		    double x = Math.pow(1+(r/12), n);
		    double loanAmount = Math.round  (monthlyInstallment*(1-(1 /x))/(r/12));
		    System.out.println();
		    System.out.printf("You can get Loan Amount : "+loanAmount);
		}
	   }
	 }		
   }	
}