Need to add arrays to the below program. The program below works, but I'm not sure where to add arrays.

import java.util.Scanner;

/**

 *

 * @author

 */

public class TaxApplication {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);     // to read the input

        double wageSalTips;

        double taxableInterest;

        double unempCompPerFunds;

        double adjustedIncome;

        double taxableIncome;

        double federalIncomeTax;

        double EIC;

        double totalPayments;

        double tax;

        double healthcare;

        double totalTax;

        double result;

        int line5 = 10150;

        System.out.println("Welcome to the 1040EZ Tax Form Application");

        System.out.println("1 Wages, salaries, and tips. This should be shown in box 1 of your Form(s) W-2. Attach your Form(s) W-2.");

        wageSalTips = input.nextDouble();

        System.out.println("2 Taxable interest.");

        taxableInterest = input.nextDouble();

        System.out.println("3 Unemployment compensation and Alaska Permanent Fund dividends.");

        unempCompPerFunds = input.nextDouble();

        adjustedIncome = wageSalTips + taxableInterest + unempCompPerFunds;

        System.out.println("4 Add lines 1, 2, and 3. This is your adjusted gross income. $" + adjustedIncome);

        System.out.println("5 If no one can claim you (or your spouse if a joint return), enter $10,150 if single; $20,300 if married filing jointly. See back for explanation. " + line5);

        taxableIncome = adjustedIncome - line5;

        System.out.println("6 Subtract line 5 from line 4. If line 5 is larger than line 4, enter -0-. This is your taxable income. $" + taxableIncome);

        System.out.println("7 Federal income tax withheld from Form(s) W-2 and 1040.");

        federalIncomeTax = input.nextDouble();

        System.out.println("8 Earned income credit (EIC)");

        EIC = input.nextDouble();

        totalPayments = federalIncomeTax + EIC;

        System.out.println("9 Add lines 7 and 8. These are your total payments and credits. $" + totalPayments);

        tax = taxableIncome * 0.15;

        System.out.println("10 Tax. Multiply Line 6 by 0.15. $" + tax);

        System.out.println("11 Health care: individual responsibility");

        healthcare = input.nextDouble();

        totalTax = tax + healthcare;

        System.out.println("12 Add lines 10 and 11. This is your total tax. $" + Math.round(totalTax * 100.0) / 100.0);

        result = totalPayments - totalTax;

        System.out.println("13 Subtract line 12 from line 9. If result is positive, it is your refund.  If result is negative, it is the amount you owe.  $" + Math.round(result * 100.0) / 100.0);

    }

}