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Thread: Formatting using Printf()

  1. #1
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    Default Formatting using Printf()

     
    //import Scanner
    import java.util.Scanner;
     
    public class Program3{
     
         public static void main(String[] args) {
     
             //intiate the Scanner
             Scanner input; 
             input = new Scanner(System.in);
     
             //declare loan amount
             System.out.print("Enter Loan Amount: ");
             double loanAmount = input.nextDouble();
     
             //declare int NumOfYears
             System.out.print("Number Of Years: ");
             int NumOfYears = input.nextInt();
     
     
     
             //declare annual interest rate
             double AnnualInterestRate = 5;  // intital
     
              System.out.println("Interest Rate: \t Monthly Rate:\t    Total Payment: \t");
            //intial loop
        while (AnnualInterestRate <= 8) //test
        {
             //Monthly
             double MonthlyInterestRate = AnnualInterestRate/1200;
     
             //Calculate monthly payment
             double monthlyPayment = loanAmount * MonthlyInterestRate / (1 - (Math.pow(1 / (1 + MonthlyInterestRate), NumOfYears * 12)));
     
           //calculate total payment
             double totalPayment = monthlyPayment * 12 * NumOfYears;
     
             //ouput of total, monthly, annual
             System.out.print(AnnualInterestRate + ("          \t") + monthlyPayment + "   \t" + totalPayment);
             System.out.printf("%8.2f", AnnualInterestRate , "8.2f" , monthlyPayment, "%8.2f", totalPayment );
             System.out.println();
    // change
     
             AnnualInterestRate += .125;
     
         } //while
         }//main
    }// class

    I'm really not sure what I'm doing wrong, I've read up on the printf() and formatting but just can't seem to get this to format right. It needs to come out to two decimal places and should stay in a 3 column output. Please any suggestions?


  2. #2
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    Default Re: Formatting using Printf()

    The printf() method takes a String followed by the values that replace the format Specs IN the string:

    System.out.printf( "%8.2f %8.2f %8.2f", AnnualInterestRate, monthlyPayment, totalPayment );

  3. #3
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    Default Re: Formatting using Printf()

    Thank you man.

    --- Update ---

    Thank you man

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