Thread: Whats Wrong? Beginning Code!

There are two variables named: custName. One a String and one an int. It does not make sense to have a name that is int.
Is the posted code the same code that you are getting the "cannot find symbol" error from?

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[code=java]
<YOUR CODE HERE>
[/code]
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Thanks guys fixed that, now im down to this. All errors are gone but just trying to run now, and im getting the errors below.
Im getting close!

/***
 Chapter 3 Debugging Assignment
 Programmer:
 Date:
 Program Name: Bert,java
 Purpose:
***/
 
import java.util.Scanner;
 
public class bert
{
    public static void main(String[] args)
    {
 
        //Declaring Variables
        int price, downPayment, tradeIn, months;
 	double annualInterest;
        String custName;
 
        Scanner reader = new Scanner (System.in);
 
        //Get Input from User
        System.out.println("What is your first name? ");
        custName = reader.next();
        System.out.print("What is the price of the car? ");
        price = reader.nextInt();
        System.out.print("What is the downpayment? ");
        downPayment = reader.nextInt();
        System.out.print("What is the trade-in value? ");
        tradeIn = reader.nextInt();
        System.out.print("For how many months is the loan? ");
        months = reader.nextInt();
        System.out.print("What is the decimal interest rate? ");
        annualInterest = reader.nextDouble();
 
 
 
        //Output
calculatePayment (price, downPayment, tradeIn, annualInterest, months, custName);
 
   }
 
    public static void calculatePayment(int price, int downPayment, int tradeIn,
            double annualInterest, int months, String custName)
    {
        int interest;
        double loanAmt;
 	double payment;
 
 
 
 
 
 
	//Calculations
interest = (int)annualInterest / 12;
loanAmt = price-downPayment-tradeIn;
payment = loanAmt/((1/interest)-(1/(interest*Math.pow(1+interest,months))));
 
 
	System.out.print("The monthly payment for " + custName + " is $");
	System.out.println(payment);
 
 
    }
}

Exception in thread "main" java.lang.ArithmeticException: / by zero
at bert.calculatePayment(bert.java:59)
at bert.main(bert.java:40)
Java Result: 1
Line 59 = payment = loanAmt/((1/interest)-(1/(interest*Math.pow(1+interest,months))));
Line 40-46 =
calculatePayment (price, downPayment, tradeIn, annualInterest, months, custName);

I hope I can figure out whats wrong!

/ by zero

Look at the code on line 59 and make sure the divisor is not 0.
Break the code up into simple statements that do one thing at a time and find out why the results are 0.

Print out the values of all the variables used on line 59 .

Did you find what variable was zero?
If not, add a println() statement to print out the values of all the variables used in the divisor to see.

Call the println method to print out the variables used in the statement where the error happens:
System.out.println("yourVar="+ yourVar);

Replace yourVar with the name of the variable in your code.

Print out the values of all the variables and expressions that are used as divisors (what is to the right of the / operator). For example with this: 12/(a+b) you should print out (a+b)

What is your first name?
Logan
What is the price of the car? 150000
What is the downpayment? 500
What is the trade-in value? 1000
For how many months is the loan? 60
What is the decimal interest rate? .05
price=150000
Exception in thread "main" java.lang.ArithmeticException: / by zero
downPayment=500
tradeIn=1000
months=60
at bert.calculatePayment(bert.java:63)
annualInterest=0.05
at bert.main(bert.java:46)
custName=Logan
Java Result: 1

I cannot see where anything is equalling zero, so what else should I check on Norm? And thank you for this information so far.

Did you print out the values of all the expressions that are used as divisors (what is to the right of the / operator). For example with this: 12/(a+b) you should print out (a+b)

Where do you print out the values of all the variables used in this statement:

loanAmt/((1/interest)-(1/(interest*Math.pow(1+interest,months))));

especially those to the right of any /s?

Where do you print out the values of all the variables used in this statement:

loanAmt/((1/interest)-(1/(interest*Math.pow(1+interest,months))));

especially those to the right of any /s?

The ONLY important values for this error are those to the right of any /s. That's where the zero value is that is causing the error:
/ by zero

This took me longer to figure out than I thought.

@ChicoTheMan94 And now the OP will not have the pleasure of finding the problem himself, let alone the things he might learn about how to find problems in code.

You gave a good answer, but I'm not sure the OP ever figured out what was causing the / by zero error. I don't know if he ever saw that the value of interest was 0, causing 1/interest to cause the error.
Once he found that out, then you've given a good explanation of why it was 0 and how to fix it.