Mortgage Calculator displays too many numbers after the decimal

I am trying to display a whole number with two digits after the decimal place such as $125.25 and not $125.123456789
Here is my program and it works just fine, I simply need some help implementing this piece of code right here:
DecimalFormat decimalPlaces = new DecimalFormat("$0.00");
Here is my program and any help will be greatly appreciated !!


//Importing the java classes associated with this program
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;

public class MultiMortgage

{
    //MultiMortgage is the existing function
    public static void main(String[] args)

    {


            DecimalFormat decimalPlaces = new DecimalFormat("$0.00");


        //hard code the value of the mortgage
        double mortgage = 200000.00;
        //hard code in the yearly interst rate
        double[][] yearsYearlyRate =

        {
            { 7, 15, 30 },
            { 5.35, 5.5, 5.75 }

        };

        //then code in the value for the number of times a year mulitplied by
        // the amoutn paid each time
        double[][] monthsMonthlyRt =

        {
            {
                    yearsYearlyRate[0][0] * 12, yearsYearlyRate[0][1] * 12,
              yearsYearlyRate[0][2] * 12
            },
            {
                    yearsYearlyRate[1][0] / 1200, yearsYearlyRate[1][1] / 1200,
              yearsYearlyRate[1][2] / 1200
            }
        };

        for (int i = 2; i < 3; i++)

        {

            //Call the method
            double payment = calPayment(monthsMonthlyRt[1][i], monthsMonthlyRt[0][i], mortgage);

            // Display the monthly payment

            System.out.println("\nMortgage Amount \tTerm \t\tRate \t\tPayment");
            System.out.println("$200,000 \t\t" + yearsYearlyRate[0][i] + " years\t"
                    + yearsYearlyRate[1][i] + "%\t\t" + payment);

            System.out.println("\nPayment # \tMonthly Interest Paid \t\tRemaining Loan Balance");

            // Call the method
            interestBalanceList(mortgage, monthsMonthlyRt[1][i], monthsMonthlyRt[0][i], payment);

        }

    }

    // Utility method to calculate the monthly mortgage payment
    // (1st error spotted)public static double calPayment(double param1, double
    // param2, double mortgage);
    public static double calPayment(double param1, double param2, double mortgage) {


               double tmp = 1 + ( param1 ) ;
               for ( int i = 1 ; i < param2 ; i++)
               tmp = tmp * ( 1 + param1 ) ;
               double monthlyPayment = mortgage * tmp * param1 / ( tmp - 1 ) ;

               // Calculate the monthlyPayment of the mortgage
              //double monthlyPayment = (param1 + param2 / (Math.pow((1 + param1), param2) - 1)) * mortgage;

              return monthlyPayment;
    }

    // Utility method to list the interest paid and loan balance
    public static void interestBalanceList(double mortgage, double param1, double param2,
            double payment)

            {

        // Use the for loop to display the list
        for (int i = 1; i < (param2 + 1); i++)

        {

            // Pause the list and go to the next month and next amount
            System.out.println("Hit the 'ENTER' key to view the loan amortization.");

            try

            {                                    
                System.in.read();
            }      catch (Exception e)



            {

            }

            // Calculate the monthlyInterest
            double monthlyInterest = mortgage * param1;

            // Calculate the loanBlance
            double loanRemaining = mortgage - (payment - monthlyInterest);

            // Set the value of mortgageAmount to the value of loanRemaining
            mortgage = loanRemaining;

            // Formate the monthlyInterest into U.S. currency
            NumberFormat n = NumberFormat.getCurrencyInstance(Locale.US);
            String str = n.format(monthlyInterest);

            // Formate the loanRemaining into U.S. currency
            NumberFormat num = NumberFormat.getCurrencyInstance(Locale.US);
            String string = num.format(loanRemaining);

            // Display the payment #, monthly interest paid and remaining loan balance


            System.out.println("\n " + i + "\t\t\t" + str + "\t\t\t" + string);

        }
    }
}