Help formatting array outputs

[rockybalboa]

Hi,
I am hoping someone can help me get this cleaned up.
My calculations are working fine but I can't seem to get the format right.
I would like to break down each loan display by year and month, ie.
Yr 1
Month
1
2
3
.
.
6
Yr2
Month
blah
blah
and so on.
One of my problems has been that it is taking the term data from the array. I was able to get this to work fine when the term value was hard coded, but I haven't been able to get this part figured out since I started taking the value assignments from the arrays.
Before the array implementation I had it set up to display a year and it's 12 months, paused, and then started again with the next year.
Anyway, I'd appreciate any advice anyone could offer.
Thank you,
Dan

P.S. I am currently getting each payment listed one line after another without any break. Also the only val I am currently getting in the month column is the total months -1.

import java.text.*;
import java.util.*;
import java.lang.*;
import java.io.*;

public class MCalcv5
{  
    public static void main(String[] args) 
    {
        double monthlyPayment;//monthly payment calculation (includes interest)
        double []principal={200000,200000,200000};//principal amount, same for all three loans
        double []interestRateYears={5.35,5.5,5.75};//annual interest rate
        int []termYears={7,15,30};//length of loan in years
        double interestPaid;//accumulator for total interest over whole loan
        double interest;//monthly interest payment
        double monthlyPrincipalPayment;//monthly payment to principal only
        double totalPaid;//accumulator for total payments over whole loan
        
        for (int i=0;i<principal.length; i++)//loop to run until pricipal has expired
        {
            double loan=principal[i];//set var loan equal to val in array
            double prt=interestRateYears[i];//set var prt equal to val in array
            double interestRateMonths = (interestRateYears[i] / 1200);//calculate monthly interest rate from annual
            int termMonths = (termYears[i] * 12);//calculate months from years
            monthlyPrincipalPayment = 0;//monthly payment excluding interest
            double balance = principal[i];//set balance from principal
            interest = 0;
            interestPaid = 0;
            totalPaid = 0;
            int x = termYears[i];
            {
                for (int y = 0; y < x; y++);//loop to calculate display monthly values
                {
                    DecimalFormat dec = new DecimalFormat(",   ###.00  ");//needed to output currency
                    termMonths--;
                    System.out.println("\n\n\t*** Mortgage Calculator***\n\n"+//display column headings
                            "\nLoan   "+(i+1)+//
                            "\nLoan Amount: \t$" + dec.format(principal[i]) +//
                            "\nInterest Rate: \t" + interestRateYears[i] +"%" +//
                            "\nTerm (years): \t" + termYears[i]);//
                    
                    monthlyPayment = (loan * interestRateMonths)/
                            (1-Math.pow(1+ interestRateMonths, - termMonths));//calculate monthly payment
                    
                    System.out.println("\n Monthly payment = " + "$" + dec.format (monthlyPayment));
                    System.out.println("\n\nMonths\tPrincipal Paid\t\tInterest Paid\t\tBalance");
                    System.out.println("------\t---------\t\t--------\t\t-------\t");
                    {
                        for(int k = 0; k<=termMonths; k++)
                        {
                            interest= balance * interestRateMonths;                         //formula for monthly intrest
                            interestPaid=interestPaid+interest;                             //totals interest paid
                            monthlyPrincipalPayment = monthlyPayment-interest;              //subtracts interest from principal
                            balance= balance - monthlyPrincipalPayment;                     //subtracts principal from balance
                            totalPaid= interestPaid + principal[i];            //displays total interest and original loan balance
                            
                            System.out.println(termMonths + "\t$"+dec.format(monthlyPrincipalPayment)+"\t\t$"+
                                    dec.format(interest) +"\t\t$"+ dec.format(balance));
                        }
                        try                                                 //for display delay
                        {
                            Thread.sleep(200);                              //
                        }
                        catch (InterruptedException e)                      //
                        {
                        }
                    }
                    System.out.println("\n Total Interest Paid = " + "$" + dec.format (interestPaid));  //total interest paid
                    System.out.println("\n Total Amount Paid ="+"$"+ dec.format (totalPaid));           //total amount paid
                }
            }
        }
    }
}

[Belisarius]

You have a lot of frivilous brackets that you should get rid of. Also, you might want to read the Java Coding Conventions link in the Java Resources sticky.

Now, I understand what the first for loop is doing; cycling through all the term lengths. I understand what the second for loop is doing; going through all the years in any particular term. I don't understand what the third for loop is doing, however. If you want to go through all the months, why not simply have it go 12 months? It's not like any of the terms go for a fraction of a year. As it is now, you seem to have that particular loop go for 12 * the number of years the term is for. That would mean that your first year of a 7 year loan would be 84 months long.