ComputeTax.java

import java.util.Scanner;

/**
 * Created by Melissa on 17/04/2017.
 * PAGE 91 - 92
 */
public class ComputeTax {
    public static void main(String[] args) {
        // Create a Scanner Object
        Scanner input = new Scanner(System.in);

        // Prompt the user to enter filing status
        System.out.print("Filing Status\n0 - Single Filer\n1 - Married Jointly or Qualifying Widow(er)\n2 - Married Separately\n3 - Head of Household\n\nEnter the filing status: ");

        int status = input.nextInt();

        // Prompt the user to enter taxable income
        System.out.print("Enter the taxable income: ");
        double income = input.nextDouble();

        // Compute tax
        double tax = 0;

        if(status == 0){ // Comput tax for single filers
            if (income <= 8350)
                tax = income * 0.10;
            else if (income <= 33950)
                tax = 8350 * 0.10 + (income - 8350) * 0.15;
            else if (income <= 82250)
                tax = 8350 * 0.10 + (33950 - 8350) * 0.15 + (income - 33950) * 0.25;
            else if (income <= 171550)
                tax = 8350 * 0.10 + (33950 - 8350) * 0.15 + (82250 - 33950) * 0.25 + (income - 82250) * 0.28;
            else if (income <= 372950)
                tax = 8350 * 0.10 + (33950 - 8350) * 0.15 + (82250 - 33950) * 0.25 + (171550 - 82250) * 0.28 + (income - 171550) * 0.33;
            else
                tax = 8350 * 0.10 + (33950 - 8350) * 0.15 + (82250 - 33950) * 0.25 + (171550 - 82250) * 0.28 + (372950 - 171550) * 0.33 + (income - 372950) * 0.35;
        }
        else if (status == 1) { // Left as an exercise
            // Compute tax for married file jointly or qualifying widow(er)
        }
        else if(status == 2) { // Compute tax for married separately
            // Left as an exercise
        }
        else if(status == 3) { // Compute tax for head of household
            // Left as an exercise
        }
        else {
            System.out.println("Error: Invalid status");
            System.exit(1);
        }

        // Display the result
        System.out.println("Tax is " + (int)(tax * 100) / 100.0);
    }
}