Format the output

[Roger Fed]

hello every one
this program compares loans with various interest rates

    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        //Prompt the user to enter the loan amount
        System.out.print("Enter the loan amount:");
        int loanAmount=input.nextInt();
        //Promp the user to enter the period in number of years
        System.out.print("Enter number of years:");
        int numberOfYears=input.nextInt();
        System.out.println("Interest Rate   Monthly Payment   Total Payment");
        int months=numberOfYears*12;
        double interestRate=5;
        double monthlyPayment;
        double rate;
        double totalPayments;
        while(interestRate<=8)
        {
            rate=interestRate/1200;
            //Calculating monthly payment
             monthlyPayment=(rate+(rate/((Math.pow((1+rate),months))-1)))*loanAmount;
            //Calculating total payments
             totalPayments=monthlyPayment*months;
            System.out.printf("%-13f   %-15.2f   %-13.2f\n",interestRate,monthlyPayment,totalPayments);
            interestRate+=(double)1/8;
        }
    }

}
 

I've used here the printf method in this line

   System.out.printf("%-13f   %-15.2f   %-13.2f\n",interestRate,monthlyPayment,totalPayments); 

the problem in the format of this first column of the output
5.000000
5.125000
5.250000
5.375000
5.500000
5.625000
5.750000
5.875000
6.000000
6.125000
6.250000
6.375000
6.500000
6.625000
6.750000
7.000000
7.125000
7.250000
7.375000
7.625000
7.750000
7.875000
8.000000
i want to remove zeros and make the format like this
5%
5.125%
5.25%
....
....
8.0%
thanks

[Stephan van Hulst]

Not an answer to your question, but you really need to know the following:

Never never never ever ever ever *ever* use binary floating point to do calculations with money. Use BigInteger instead.

[Campbell Ritchie]

There is something in the Java™ Tutorials; go through "Numbers" and note particularly the links to java.util.Formatter.