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**Sasq** · 29 October 2005, 07:38

Java is case sensitive to class/physical file name.

**Wombat** · 29 October 2005, 13:17

Yup. Also, what are you programming in, Dave? Have you tried Eclipse? I love it.

**GT98** · 30 October 2005, 13:54

I'm still having problems after fixing the case of the file names/classes:

here we go:

Program:

Code:

import java.io.*;
import java.text.NumberFormat;// Number format
import java.util.Locale;//sets location of currency


class Mortgagewk5 //name of program
{
public static void main(String[]arguments) throws IOException
{
	NumberFormat nformat = NumberFormat.getCurrencyInstance(Locale.US); //currency format
	BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

	LoanOptionsWk5[] Loans = new LoanOptionsWk5[3];//array setup for loans

	Loans[0] = new LoanOptionsWk5 (200000, 7, .0525);//first loan @ 200000 over 7 years at 5.25 intrest
	Loans[1] = new LoanOptionsWk5 (200000, 15, .0550);//second loan @ 20000 over 15 years at 5.5 interest
	Loans[2] = new LoanOptionsWk5 (200000, 30, .0575);//third loan @ 20000 over 30 years at 5.75 interest

	 //print out of initial header information: output array data to screen, currency is formatted, and percentages are shown.
	  System.out.println();
	  System.out.println("\tMortgage Calculator");
	  System.out.println();
	  System.out.println("Loan Amount = $" + nformat.format(Loans[0].getloan()));
	  System.out.println("Years\t\t|   " + Loans[0].gettime() + "\t\t" + Loans[1].gettime() + "\t\t" + Loans[2].gettime());
	  System.out.println("Interest Rate\t|   " + Loans[0].getinterest()*100 + "%" + "\t" + Loans[1].getinterest()*100 + "%" + "\t\t" + Loans[2].getinterest()*100 + "%");
	  System.out.println("Monthly Payment\t|   " + nformat.format(Loans[0].getmonthlypay()) + "\t" + nformat.format(Loans[1].getmonthlypay()) + "\t" + nformat.format(Loans[2].getmonthlypay()));
	  System.out.println("__________________________________________________  ___________________");

		//determine max months to determine number of monthly transactions to run
		int months = Loans[0].getmonths();
		for (int i=0; i < Loans.length; i++) {
		        if(Loans[i].getmonths() > months){
		            months = Loans[i].getmonths();   // new maximum
		        }
		}

		//declare variables
		double intpay;
		double balpay;
		double loanbal = 0;

		//execute monthly transactions
		for(int i = 0; i < months+1; i++){
			System.out.println("Month " + (i+1));

			//execute each loan option for month
			for (int c=0; c < Loans.length; c++){

				//declare variables
				double loan = Loans[c].getloan();
				int time = Loans[c].gettime();
				double intrate = Loans[c].getinterest();

				//calculate mortgage information
				intpay = Loans[c].getbalance() * (Loans[c].getinterest()/12); //this is the interested paid each month
				balpay = Loans[c].getmonthlyPay() - intpay; //this is the amount paid towards principal each month
				loanbal = Loans[c].getbalance() - balpay; //this is the new loan balance after payment

				//print out monthly transactional information
				if (intpay > 0){
					if (loanbal > 0){
					  	System.out.println("\t" + time + " year loan - interest $" + nformat.format(intpay) + " Remaining balance $" + nformat.format(loanbal));
					} else {
					  	System.out.println("\t" + time + " year loan - interest $" + nformat.format(intpay) + " Remaining balance $0.00");
					}
				}else{
				  	System.out.println("\t" + time + " Loan Completed");
				}

				//set new loan balance for purposes of figuring monthly transactions
				Loans[c] = new LoanOptionsWk5(loan, time, intrate, loanbal);
			}

			System.out.println();

			//conditional check to allow pause in output at intervals until key press
			if ((i % 10) == 0){
				System.out.print("Press any key...");
				try{
					input.readLine();
		            	}
				catch (Exception e){
					e.printStackTrace();
				}
			}
		}
	 }
	}

Heres the loan options class:

Code:

class LoanOptionsWk5{

	//declare variables
	double aamount;
	int atime;
	int amonths;
	double aloanblance;
	double aintrate;


	//constructor for array and intiziation of variables
	LoanOptionsWk5(int amount,int time,double loanblance,double intrate) {
	aamount = amount;
	atime = time;
	aloanblance = loanblance;
	aintrate = intrate;
	}

	//Method of solving mortgages
	double getmonthlypay(){
	double rate = aintrate / 12; //calculated monthly interest rate
	double payment = (aamount * rate) / (1 - (Math.pow(rate+1,-(atime*12)))); //monthly payment
	return payment;
	}
	int getmonths(){
		amonths = atime * 12;
	return amonths;
	}
	double getinterest(){
	return aintrate;
	}
	double getloan(){
	return aamount;
	}
	int gettime(){
	return atime;
	}
	double getblance(){
	return aloanblance;
}
}

The Errors I'm getting:

Code:

C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:15: cannot find symbol
symbol  : constructor LoanOptionsWk5(int,int,double)
location: class LoanOptionsWk5
	Loans[0] = new LoanOptionsWk5 (200000, 7, .0525);//first loan @ 200000 over 7 years at 5.25 intrest
                   ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:16: cannot find symbol
symbol  : constructor LoanOptionsWk5(int,int,double)
location: class LoanOptionsWk5
	Loans[1] = new LoanOptionsWk5 (200000, 15, .0550);//second loan @ 20000 over 15 years at 5.5 interest
                   ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:17: cannot find symbol
symbol  : constructor LoanOptionsWk5(int,int,double)
location: class LoanOptionsWk5
	Loans[2] = new LoanOptionsWk5 (200000, 30, .0575);//third loan @ 20000 over 30 years at 5.75 interest
                   ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:55: cannot find symbol
symbol  : method getbalance()
location: class LoanOptionsWk5
				intpay = Loans[c].getbalance() * (Loans[c].getinterest()/12); //this is the interested paid each month
                                              ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:56: cannot find symbol
symbol  : method getmonthlyPay()
location: class LoanOptionsWk5
				balpay = Loans[c].getmonthlyPay() - intpay; //this is the amount paid towards principal each month
                                              ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:57: cannot find symbol
symbol  : method getbalance()
location: class LoanOptionsWk5
				loanbal = Loans[c].getbalance() - balpay; //this is the new loan balance after payment
                                               ^
C:\Documents and Settings\Scott\Desktop\Mortgagewk5.java:71: cannot find symbol
symbol  : constructor LoanOptionsWk5(double,int,double,double)
location: class LoanOptionsWk5
				Loans[c] = new LoanOptionsWk5(loan, time, intrate, loanbal);
                                           ^
7 errors

Tool completed with exit code 1

ughhhh

**cjolley** · 31 October 2005, 00:20

Is it because your constructor takes 4 arguments and you call it with only 3?

Sorry if this is wrong, been a while since I wrote any java.

**woel** · 31 October 2005, 09:50

Originally posted by cjolley

Is it because your constructor takes 4 arguments and you call it with only 3?

Sorry if this is wrong, been a while since I wrote any java.

I'm thinking that too. The method signature of the constructor takes 4 arguments (int,int,double,double) and the new statement only includes 3 (int,int,double). You cannot skip an argument in Java and hope the JRE to fill it for you.

The compiler errors a bit down is because the names do not match with those in the LoanOptionsWk5 class. Use cut and paste or a good IDE to avoid that kind of problems. Eclipse and Netbeans are two good IDEs.

/L

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