Mortgage Calculator

I am trying to figure out agood formula for calculating MonthlyPayment, MonthlyInterestPaid, and Balance.


import java.text.DecimalFormat; //Required for format output
public class MortgagePaymentCalculator
{
        //Hard code the amount=400,000, the term=30 years, and the interest rate=4.75%
        static double MortgageAmount = 400000;  
          //400,000 is the amount of the mortgage
        static int TermYears = 30;                      
          //30 is the length of time that the amount is to be payed back
        static double InterestRate = 4.75;                
          //4.75 is the percentage of interest to be paid monthly
        static double MonthlyPayment;  
          //Total monthly payment
        static double MonthlyInterest;
        static int Months;
        static double MonthlyInterestRate;
        static int Payment;
        static double Balance;
        static double MonthlyInterestPaid;

  //Main
 
    public static void main(String[] args)
      {

           //Monthly Payment Calculations
            Months = (TermYears * 12);
            //Calculates the total number of months to pay mortgage (360)
            MonthlyInterestRate = (InterestRate *.01);
            //Calculates the rate to a decimal format
            MonthlyInterest = (MonthlyInterestRate/12);
            //Calculates the amount of monthly interest
               
               
            //Calculates monthly payment
            MonthlyPayment =
                //Calculates the monthly payment
                MonthlyInterestPaid =
              //Calculates the monthly interest paid
              Balance =
           //Monthly Mortgage Payment Calculator Heading
                              DecimalFormat Money = new DecimalFormat("$0,000.00");

                  System.out.println("///////////////////////////////////////////////////////////////////////////////");

                  System.out.println("                       Monthly Mortgage Payment Calculator");

                  System.out.println("///////////////////////////////////////////////////////////////////////////////");
                  System.out.println("-------------------------------------------------------------------------------");
                  System.out.println();
                  //data produced from calculations
                  System.out.println("Total Mortgage Financed: "+ Money.format(MortgageAmount));
                  System.out.println();
                  System.out.println("Total Mortgage Term: "+ TermYears);
                  System.out.println();
                  System.out.println("Interest Rate: "+ InterestRate + "%");
                  System.out.println();
                  System.out.println("Monthly Payment At Given Interest Rate: " + Money.format(MonthlyPayment));
                  System.out.println("-------------------------------------------------------------------------------");
                  System.out.println();
                  //requesting the payment amount to be calculated
                    System.out.println("Payment #1");
                    System.out.println();
                  System.out.println("Payment Amount: " + Money.format(MonthlyPayment));
                  System.out.println("Interest Paid: " + Money.format(MonthlyInterestPaid));
                  System.out.println("Loan Balance: " + Money.format(Balance));
                  System.out.println();
                  System.out.println("-------------------------------------------------------------------------------");
                  System.out.println();
                 
                   }//End Payment Calculations            
}//End MortgagePaymentCalulator