Making a double into a constant...how do i do it?

Question

i'm writing a program for my comp 1900 class to compute a salary and print out a paycheck and stub for each employee the info is entered in for.
i need to make the salary a constant (i think)....is there a way to make the user-inputed number into a constant?
i have salary = scan.nextDouble(); and i need to make that salary into a constant.
i have most of the program written, but i re-read the instructions and found some stuff that needs fixing, this being one of them.
thanks much.

Answer 1

import java.util.Scanner;
public class Paycheck
public static void main (String [] args)
Scanner scan = new Scanner (System.in);
double workedHours, overtimeHours, sSecurity, medicareTax, federalWithhold, paycheck;
double health, dentalInsurance, visionInsurance;
double salary = 0, deductions, rate = 0
String employeeType, employeeName, fulltime, parttime, yes, no, fedHold, healthIns, chosenHealth = "boo", minimal;
String standard, premium, dentIns, visIns;
//fix the address to its correct form.
final String COMPANY_LOGO = "Best Widgets, Inc" + "/nADDRESS";
//computing salary
System.out.println ("Enter the name of the employee.");
employeeName = scan.nextLine();
System.out.println ("Is this employee part time or full time? parttime or fulltime");
employeeType = scan.next();
if (employeeType.equals("fulltime"))
System.out.println ("Please enter the number of hours worked, not including overtime.");
workedHours = scan.nextDouble();
System.out.println ("Please enter the number of overtime hours worked this pay period.");
overtimeHours = scan.nextDouble();
System.out.println ("Enter the salary rate for " + employeeName);
rate = scan.nextDouble();
// initialize and declare constant for adding deductions together later
salary = (workedHours + (overtimeHours * 1.5)) * rate;
else
if (employeeType.equals("parttime"))
System.out.println ("Please enter the number of hours worked.");
workedHours = scan.nextDouble();
System.out.println ("Enter the salary rate for " + employeeName);
salary = (workedHours * rate);
else
System.out.println ("You entered an incorrect value.");
//computing deductions
sSecurity = (.062 * salary);
medicareTax = (.015 * salary);
if (employeeType.equals("fulltime"))
federalWithhold = (.095 * salary);
else
System.out.println ("Did you choose to have federal income withhold? yes or no");
fedHold = scan.next();
if (fedHold.equals("yes"))
federalWithhold = (.095 * salary);
else
federalWithhold = 0;
//optional deduction items for ALL employees
System.out.println ("Is medical health insurance taken out of the employee's salary? yes or no");
healthIns = scan.next();
if (healthIns.equals("yes"))
System.out.println ("Did the employee chose the minimal coverage plan, standard coverage plan,"
+ " or premium coverage plan? minimal, standard, or premium");
chosenHealth = scan.next();
if (chosenHealth.equals("minimal"))
health = (salary - 54.00);
else
if (chosenHealth.equals("standard"))
health = (salary - 82.00);
else
health = (salary - 110.00);
else
health = (salary - 0);
System.out.println ("Did this employee choose to take Dental Insurance? yes or no");
dentIns = scan.next();
if (dentIns.equals("yes"))
dentalInsurance = (health - 27.62);
else
dentalInsurance = (health - 0);
System.out.println ("Did this employee choose to take vision insurance? yes or no");
visIns = scan.next();
if (visIns.equals("yes"))
visionInsurance = (dentalInsurance - 7.88);
else
visionInsurance = (dentalInsurance - 0);
//deductions added.
deductions = (sSecurity + medicareTax + federalWithhold + visionInsurance);
System.out.println ("Your salary for this pay period is " + (salary - deductions));
what do i change the 2 bolded items to so i don't get an error saying they haven't been initialized (even though they are later on IMO) and i don't get a negative number when the math is done....i just executed the program and input 27.50 for rate and 80 hours worked with 12 OT hours. i should have come out with $2896 - whatever deductions i "picked" but i came out with -396.00 or something close.