The code you have to prompt for the information and display it works fine in
my AppletViewer.

The problem with the fee happens is in the calculateCharges method: you
define an input parameter named 'fee' (all lower case) that is an int, then
you immediately create another variable named 'Fee' (capitalized) that is a
double. You then calculate a value for 'Fee' but then never refer to it
again; I would have expected you to at least try to display that value
somewhere in your outputArea. To complicate matters further, the input
parameter called 'fee' is called 'noOfHours' when you pass it to the
calculateCharges method; that suggests further confusion on your part about
exactly what you are trying to do.

I think you need to modify the definition of calculateCharges so that it
receives 'numberOfHours' as an input and returns 'fee' as an output; then,
in your init method, after you have calculated the fee, display it in the
outputArea.

Something like this:

public double calculateCharges(int hoursParked) {

   double fee = 0.00; //initialize the output of the method

   /* Calculate fee. */
   if (hoursParked <= 3) fee = 2.00;
   ...

   return fee;
}

The invocation of the calculateCharges method should be something like this:

   double charges = calculateCharges(noOfHours);

Then, be sure to display the value of 'charges' in your outputArea, perhaps
by including it in the 'output' variable you create in your for loop.

Please note that the revised calculateCharges method refers to 'noOfHours'
as 'hoursParked' within the method signature and the return value named
'fee' within that method is called 'charge' in the init method; that was
deliberate to show you that the names don't have to be the same as long as
the datatypes match. However, you could use 'noOfHours' where I have
'hoursParked' and 'charge' where I have 'fee' and everything will still
work.

The other main change I made was to make calculateCharges return the
fee/charge as the output from the method. If you had to describe the purpose
of calculateCharges, I think you would agree that it was supposed to
calculate the parking fee given the number of hours that the customer had
parked so it seemed logical to make the fee the value returned by the method
and to make the hours parked the input.

Does this make sense to you?

Also, a few style things; your instructor may not care to much about style
at this stage and the same might apply to you but I think it's a good idea
to develop good habits early. Two things that will help you (and others)
read and understand your code are:
- use consistent indentation for your code. I know that newsreaders tend to
mangle indentation so yours may already be perfect but it was definitely
ragged in my newsreader.
- a variable name shouldn't start with a capital letter (as in the case of
'Fee' and 'NoOfHours') with the exception of constants, which should be
written entirely in capitals.

--
Rhino