New to java need help with code been up all night.

From:
"Everett Arndt" <ecarndt@verizon.net>
Newsgroups:
comp.lang.java.help
Date:
Sat, 29 Jul 2006 11:02:09 GMT
Message-ID:
<ReHyg.49$L31.31@trndny06>
I started this program three days ago the books have me confused trying to
keep my wits about what I am trying to do.

Here are my errors and my code:

C:\POS407\JavaPrograms\bin>run

C:\POS407\JavaPrograms\bin>REM Change directory to the classes directory

C:\POS407\JavaPrograms\bin>cd ..\classes

C:\POS407\JavaPrograms\classes>REM Execute Java program

C:\POS407\JavaPrograms\classes>java -classpath . EverettMortgagePayment_CR4
Exception in thread "main" java.lang.NoSuchMethodError: main

C:\POS407\JavaPrograms\classes>REM Change directory back to the bin
directory

C:\POS407\JavaPrograms\classes>cd ..\bin

C:\POS407\JavaPrograms\bin>

here is my code:

//*******************************************************
// Code for storing loan information and printing an
*
// amortization report.
*
//*******************************************************

import java.io.*;
import java.text.DecimalFormat;

public class EverettMortgagePayment_CR4
{
   private double loanAmount; // Loan Amount
   private double interestRate; // Annual Interest Rate
   private double loanBalance; // Monthly Balance
   private double term; // Payment Term
   private double payment; // Monthly Payment
   private int loanYears; // Years of Loan

   //****************************************************
   // The beginning code uses three parameters:
*
   // which is the loan balance, the annual interest
*
   // rate, and term in years of the loan.
*
   // These values are stored in the corresponding
*
   // code of the program. The private calcPayment code
*
   // is then executed.
*
   //****************************************************

   public EverettMortgagePayment_CR4(double loan, double rate, int years)
   {
      loanAmount = loan;
      loanBalance = loan;
      interestRate = rate;
      loanYears = years;
      calcPayment();
   }

   //******************************************************
   // This area is used to calculate the amount paid per
*
   // month. The result put in the payment field. Then it
*
   // save for use later
*
   //******************************************************

   private void calcPayment()
   {
      // Calculate value of Term
      term =
        Math.pow((1+interestRate/12.0), 12.0 * loanYears);

      // Calculate monthly payment
      payment =
        (loanAmount * interestRate/12.0 * term) / (term - 1);
   }

   //********************************************************
   // The getNumberOfPayments is a mathmatical equation
*
   // allows for the number of loan payments over the years.
*
   //********************************************************

   public int getNumberOfPayments()
   {
      return 12 * loanYears;
   }

   //*********************************************************
   // The makeReport saves the amortization report to a file
*
   // that is created by the filename argumentin the code
*
   //*********************************************************

   public void makeReport(String filename) throws IOException
   {
      double monthlyInterest; // The monthly interest rate
      double principal; // The amount of principal

      // Create a DecimalFormat object for output formatting.
      DecimalFormat dollar = new DecimalFormat("#,##0.00");

      // Create objects necessary for file output.
      FileWriter fwriter = new FileWriter(filename);
      PrintWriter outputFile = new PrintWriter(fwriter);

      // Print monthly payment amount.
      outputFile.println("Monthly Payment: $"
                   + dollar.format(payment));

      // Print the report header.
      outputFile.println("Month\tInterest\tPrincipal\tBalance");
      outputFile.println("-----------------------------------"
                       + "--------------");

      // Display the amortization table.
      for (int month = 1; month <= getNumberOfPayments(); month++)
      {
         // Calculate monthly interest.
         monthlyInterest = interestRate / 12.0 * loanBalance;

         if (month != getNumberOfPayments())
         {
            // Calculate payment applied to principal
            principal = payment - monthlyInterest;
         }
         else // This is the last month.
         {
            principal = loanBalance;
            payment = loanBalance + monthlyInterest;
         }

         // Calculate the new loan balance.
         loanBalance -= principal;

         // Display a line of data.
         outputFile.println(month
                      + "\t"
                      + dollar.format(monthlyInterest)
                      + "\t\t"
                      + dollar.format(principal)
                      + "\t\t"
                      + dollar.format(loanBalance));
      }

      // Close the file.
      outputFile.close();
   }

   //********************************************************
   // The getLoanAmount code returns the loan amount.
*
   //********************************************************

   public double getLoanAmount()
   {
      return loanAmount;
   }

   //********************************************************
   // The getInterestRate code returns the interest rate.
*
   //********************************************************

   public double getInterestRate()
   {
      return interestRate;
   }

   //********************************************************
   // The getLoanYears code returns the years of the loan.
*
   //********************************************************

   public int getLoanYears()
   {
      return loanYears;
   }
}

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