Thread: Help with code, Says number is NaN and i cant format it

The code below is for figuring out a loan from user input. I seem to be having trouble with the code towards the bottom. I can not get my output statesment to be in currency format and it says some of the outputs are NaN? please help i have highlighted the area i think the problem is in.

import java.util.*;
 import java.io.*;
 import java.text.*;
public class Item1 {
 
    public static void main(String[] args)  throws NumberFormatException {
    	String loanS;
    	char loan;
    	String creditS;
    	char credit;
    	double moneyBorrow;
    	double timeYears;
    	double serviceCharge= 0;
    	double loanRate=0;
    	boolean goodData=true;
    	Scanner scan = new Scanner (System.in);
    	DecimalFormat decF = new DecimalFormat ("#,###,###.##");
 
    	System.out.println("What type of loan do you want:"
    						+"\n\t (F)irst Home Loan"
    						+"\n\t(H)omeImprovementLoan"
    						+"\n\t (C)ar Loan"
    						+"\n\t (P)ersonal Loan"
    						+"\n\t (B)usiness Loan");
    	System.out.println ("Enter your choice");
    	loanS = scan.next();
    	loan= loanS.charAt(0);
    	System.out.println ("choice is " + loan);
 
    	switch(loan){
    		case 'F':
    		case 'f':
	loanRate=4.75/100/12;
 
    		break;
 
    		case 'H':
    		case 'h':
   loanRate=5.25/100/12;
    		break;
 
    		case 'C':
    		case 'c':
   	loanRate=8.25/100/12;
 
    		break;
 
    		case 'P':
    		case 'p':	
     loanRate=9.5/100/12;
    		break;
 
    		case 'B':
    		case 'b':
     loanRate=6/100/12;	
     default:
     goodData=false;
 
    	}
    	if(goodData=false){
    		System.out.println("Incorrect Data");
    	}				
    System.out.println("What is your credit status"
    					+"\n\t(P)oor"
    					+"\n\t(F)air"
    					+"\n\t(G)ood"
    					+"\n\t(E)xcellent");
 
    	creditS = scan.next();
    	credit= creditS.charAt(0);
    	System.out.println("Answer: "+ credit);	
    		System.out.println("How many thousands of dollars would you like to borrow?");			
    	moneyBorrow = scan.nextDouble();
 
 
    	System.out.println("How many years will it take to pay off loan?");
    		timeYears= scan.nextDouble()*1000;
 
    	double moneyBorrowed =moneyBorrow *1000;
    System.out.println(moneyBorrowed);
    	switch(credit)
    	{
 
    		case'P':
    		case'p':
    serviceCharge=.03*moneyBorrowed;			
    		break;
 
    		case'F':
    		case'f':
    serviceCharge=.02*moneyBorrowed;			
 
    		break;
 
    		case'G':
    		case'g':
    serviceCharge=.01*moneyBorrowed;
    		break;
 
    		case'E':
    		case'e':
 
 
    	}			
 
 
 
 
    //	Monthly payment = (mIR * LoanAmount) / (1 - (1 /  (1+mIR)^(12*TimeInYears)  )  )
//mIR = monthly interest rate = annual interest rate /12
//TimeInYears = number of years needed to pay off loan
 
 
[COLOR="Blue"]moneyBorrowed=moneyBorrowed+serviceCharge;
	int mIR=0;
    double monthlyPay =(mIR*moneyBorrowed)/(1-(1/Math.pow((1+mIR),(12*timeYears))));
   double loanTotal=monthlyPay*timeYears*12;
    double interestPaid=loanTotal-moneyBorrowed;
     double interestPercent=interestPaid/loanTotal*100;[/COLOR]
NumberFormat currF = NumberFormat.getCurrencyInstance();
NumberFormat percentF = NumberFormat.getPercentInstance();
 
 
System.out.println(percentF.format(mIR));
System.out.println(currF.format(monthlyPay));
System.out.printf("interestRate: %11.2f%n",loanRate*100*12);
System.out.printf("Loan Amount: %11.2f%n",moneyBorrowed);
System.out.printf("Monthly Payment: %11.2f%n",monthlyPay);
System.out.printf("Total Amount Paid:%11.2f%n",loanTotal);
System.out.printf("Total Interest Paid: %11.2f%n",interestPaid);
System.out.printf("Interest Paid as a percent of loan: %11.2f%n",interestPercent);
 
   // int timeInYears =
[/color]

thanks i took ur advice but now i cant format the numbers, i get a throw formatexception thats says f != java.lang.string any ideas?

import java.util.*;
 import java.io.*;
 import java.text.*;
public class Item1trytwo {
 
 
 
    public static void main(String[] args)  throws NumberFormatException {
 
    	char loan;
    	char credit;
    	double moneyBorrow;
    	double timeYears;
    	double serviceCharge= 0;
    	double loanRate=0;
    	boolean goodData=true;
    	double monthlyPay;
  	    double loanTotal;
    	double interestPaid;
   		double interestPercent;
   		double moneyBorrowed;
   		String 	sMoneyBorrowed;
    	Scanner scan = new Scanner (System.in);
    	DecimalFormat decF = new DecimalFormat ("#,###,###.##");
 
    	System.out.println("What type of loan do you want:"
    						+"\n\t (F)irst Home Loan"
    						+"\n\t (H)ome Improvement Loan"
    						+"\n\t (C)ar Loan"
    						+"\n\t (P)ersonal Loan"
    						+"\n\t (B)usiness Loan");
    	System.out.println ("Enter your choice");
    	loan = scan.next().charAt(0);
 
    	System.out.println ("choice is " + loan);
 
    	switch(loan){
    		case 'F':
    		case 'f':
	loanRate=.475/10/12;
 
    		break;
 
    		case 'H':
    		case 'h':
   loanRate=.525/10/12;
    		break;
 
    		case 'C':
    		case 'c':
   	loanRate=.825/10/12;
 
    		break;
 
    		case 'P':
    		case 'p':	
     loanRate=.95/10/12;
    		break;
 
    		case 'B':
    		case 'b':
     loanRate=.6/10/12;	
     default:
     goodData=false;
 
    	}
    	if(goodData=false){
    		System.out.println("Incorrect Data");
    	}				
    System.out.println("What is your credit status"
    					+"\n\t(P)oor"
    					+"\n\t(F)air"
    					+"\n\t(G)ood"
    					+"\n\t(E)xcellent");
 
    	credit = scan.next().charAt(0);
 
    	System.out.println("Answer: "+ credit);	
    		System.out.println("How many thousands of dollars would you like to borrow?");			
    	moneyBorrow = scan.nextDouble();
 
 
    	System.out.println("How many years will it take to pay off loan?");
    		timeYears= scan.nextDouble()*1000;
 
     moneyBorrowed =moneyBorrow *1000;
    System.out.println(moneyBorrowed);
    	switch(credit)
    	{
 
    		case'P':
    		case'p':
    serviceCharge=.03*moneyBorrowed;			
    		break;
 
    		case'F':
    		case'f':
    serviceCharge=.02*moneyBorrowed;			
 
    		break;
 
    		case'G':
    		case'g':
    serviceCharge=.01*moneyBorrowed;
    		break;
 
    		case'E':
    		case'e':
 
 
    	}			
 
 
 
 
    //	Monthly payment = (mIR * LoanAmount) / (1 - (1 /  (1+mIR)^(12*TimeInYears)  )  )
//mIR = monthly interest rate = annual interest rate /12
//TimeInYears = number of years needed to pay off loan
 
 
moneyBorrowed=moneyBorrowed+serviceCharge;
	double mIR;
	mIR = loanRate/12;
     monthlyPay =(mIR*moneyBorrowed)/(1-(1/Math.pow((1+mIR),(12*timeYears))));
    loanTotal=monthlyPay*timeYears*12;
     interestPaid=loanTotal-moneyBorrowed;
      interestPercent=interestPaid/loanTotal*100;
 
NumberFormat currF = NumberFormat.getCurrencyInstance();
NumberFormat percentF = NumberFormat.getPercentInstance();
 
 
System.out.printf("interestRate: %11.2f \n",loanRate*100*12);
System.out.printf("Loan Amount: %11.2f\n",moneyBorrowed);
System.out.printf("Monthly Payment: %11.2f \n",monthlyPay);
System.out.printf("Total Amount Paid:%11.2f\n",loanTotal);
System.out.printf("Total Interest Paid: %11.2f\n",interestPaid);
System.out.printf("Interest Paid as a percent of loan: %11.2f\n",interestPercent);
 
   // int timeInYears =	
 
 
 
 
    }
 
}