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POAdding a final double to my program
 

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  1. POAdding a final double to my program
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    <p>I'm attempting to make a few doubles in my code final. I've tried a few methods such as "public static final," just "final," etc.</p> <pre><code>import java.util.Scanner; import java.text.DecimalFormat; public class Pay_stub { public static void main(String[] args) { Scanner input = new Scanner(System.in); DecimalFormat df = new DecimalFormat("#.00"); double fedinctax = .15; double statetax = .035; double socsectax = .0575; double meditax = .0275; double penplan = .05; double healthins = 75; double hoursworked; double hourlyrate; double netpay; double grosspay; String firstname, lastname; System.out.println("Enter employee first name: "); firstname = input.next(); System.out.println("Enter employee last name: "); lastname = input.next(); System.out.println("Enter hours worked: "); hoursworked = input.nextDouble(); System.out.println("Enter hourly rate: "); hourlyrate = input.nextDouble(); grosspay = hoursworked * hourlyrate; double fit = grosspay * fedinctax; double st = grosspay * statetax; double sst = grosspay * socsectax; double mmt = grosspay * meditax; double pp = grosspay * penplan; double total = fit + st + sst + mmt + pp + healthins; double net = grosspay - total; System.out.println(firstname + lastname + "'s monthly paycheck is: "); System.out.println("Gross Pay: " + (df.format(grosspay))); System.out.println("Federal Income Tax: " + fit); System.out.println("State Tax: " + st); System.out.println("Social Security Tax: " + sst); System.out.println("Medicare/Medicaid Tax: " + mmt); System.out.println("Pension Plan: " + pp); System.out.println("Health Insurance: " + healthins); System.out.println("Net Pay: " + (df.format(net))); } } </code></pre> <p>These are what I would like to make final:</p> <pre><code> double fedinctax = .15; double statetax = .035; double socsectax = .0575; double meditax = .0275; double penplan = .05; double healthins = 75; </code></pre> <p>I just am not sure where I'm supposed to put the final lines in the code, or how they are supposed to be written</p>
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    1. COJust add the word "final" and a space at the beginning of each line. "Public" and "static" are not valid for variables like these that are declared inside a method.
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      1. USErnest Friedman-Hill
    2. COIf you're getting an error message, you should say what the error message is, and post a (short) program that actually demonstrates the error.
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      1. USruakh
    3. COyou can think of a 'final' variable as a constant, it can't change. Once you make something final its there with same value for the whole life of that scope (method/block/whole app depending of where you declare it). the example that you give all the double at the beginning (fedinctax etc.) can be final in that method. but since there actual constants you can declare as 'static final' in the current class and use them anywhere (in the class if private or outside if public by doing 'Pay_stub.fedinctax')
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      1. POAdding a final double to my program
      1. USboogie666
 

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