Question

I am trying to calculate this if/else statement through the JOption Message window. Prompt 1 is fine and returns the name, but I am not getting any calculations through prompt 2. I’m guessing I need to do something with my double number1, but I’m not exactly sure.

Thanks in advance!

public static void main(String[] args)
{

    Scanner imput = new Scanner(System.in);   //ALLOW USER TO INPUT NAME AND MONTHLY INCOME

    long monthlyIncome = 0;
    double newSocSecTax = 0.0;
    double oldSocSecTax = 0.0;

    String name = JOptionPane.showInputDialog( "Please enter your name: "); //PROMPT 1

    String income = JOptionPane.showInputDialog("\nPlease enter your gross monthly income:  "); //PROMPT 2
    double number1 = Double.parseDouble( income );

    if(monthlyIncome >= 110100.00)
    {
       newSocSecTax = 110100.00 * .062;
       oldSocSecTax = 106800.00 * .042;
    }
    else
    {
       if(monthlyIncome >= 106800.00)
       {
         newSocSecTax = monthlyIncome * .062;
         oldSocSecTax = 106800.00 * .042;
       }
   else
   {
       newSocSecTax = monthlyIncome * .062;
       oldSocSecTax = monthlyIncome * .042;
   }
   }


   String message = String.format( "%s, your monthly social security tax will be $%.2f." +
                                 "\nThis is an increase of $%.2f.", name, newSocSecTax, oldSocSecTax );

   JOptionPane.showMessageDialog( null, message );
   System.exit(0);
}

}

Answer 1

Change your code to

double monthlyIncome = Double.parseDouble( income );

because in if-else statement you are using monthlyIncome but in your original code you assigned the value to number1