Hello,

If anyone can give me some help of where I am going wrong with creating a java program that will display the mortgage payments of three mortgage loans using a GUI I will be most thankful to you. When I am trying to compile my file, I am receiving 1 error for int b; a; //Counted Loop as well as Exception in thread “main” java.lang.ClassFormatError when I try and run the file. Here is what I have so far.

/*
PRG421: McBride Financial Services SR-mf-003 (Week 3)
Programmer: Thomas Bowden, Jr.
Date: December 8, 2008
Filename: MortgageCalculator2.java
Purpose: Create a Java program that will display mortgage payments
for 3 mortgage loans using a GUI.
– 7 year at 5.35%
– 15 year at 5.5%
– 30 year at 5.75%
//Use an array for different loans.
//Display the mortgage payments for each loan.

import java.lang.Math.*;import java.text.*;import java.io.*;public class MortgageCalculator2{ public static void main(String[] arg) { double pLoan = 200000; //total loan amount double pTerm[] = {7, 15, 30}; //payment term double pAPR[] = {0.0535, 0.055, 0.0575}; //interest rate double pMortgage[] = {0, 0, 0}; double pBalance[] = {0, 0, 0}; int b; a; //Counted Loop for (b = 0; b < 3; b++) { //lets calculate mortgage monthly payments pMortgage[b] = pLoan * dAPR[b] / (1- Math.pow((1 + pAPR[b]), -pTerm[b])) /12; pBalance[b] = pLoan; } system.out.println(“Three Monthly Loan Computations”); //display initial footer system.out.println(“===============================”); footer(b, dMortgage[0], dMortgage[1], dMortgage[2]); for (b = 1; b <= (dLoan[2] * 12); b++) //Looping payments post-incremented by 1 { for (a=0; a<3; a++) { if (pBalance[a] > 0.01) //verifies balance { system.out.format(” %-8.2f%a”, a, pBalance[a] * (pTerm[a] / 12)); //justifies interest paid pBalance[a] -= pMortgage[a] – pBalance[a] * (pAPR[a] / 12); //modifying balance } else { system.out.format(“,”); } } system.out.println(); if(b % 12 == 0 && b < dTerm[2] * 12) //reiterates footer after every fiscal year { footer(b, pMortgage[0], pMortgage[1], pMortgage[2]); } } } private static void footer(int b, double pMortgage0, double pMortgage1, double pMortgage2) throws IOException //footer methodology { if ((b/12+1) % 2 != 0 && b>12) //Displays payment bi-yearly { system.out.println(“Press Enter to perform the next 2 fiscal years”); } if (b>12) { system.in.read(); } system.out.println(); system.out.format(“Term payments on $200,000 Loan #%d”, a/12+1); system.out.format(“5.35%% @ 7yrs $%.2f/mo 5.50%% @ 15yrs $%.2f/mo 5.75%% @ 30yrs $%.2f/mo”, pMortgage0, pMortgage1, pMortgage2); system.out.println(“Interest Paid Balance interest Paid Balance interest Paid Balance”); system.out.println(“——- ————- ——- ————- ——- ————- ——– ————- ———–”); }}

*Edited to add the [ code] tags. please

This post has been edited by pbl: 08 December 2008 – 07:02 PM

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