Having trouble with throws...

Hey there.
I'm fairly new to java so bear with me here.
I'm having trouble with a program that, in short, reads from a file.
Let me shorten a show the code to you...
//main opens up and in a bit we get to...
if (loginVerify())
//and the if continues.
fileIn.close();
//main ends
public boolean loginVerify() throws IOException
     openIn(); //Checks for validity - It's a long story why I //didn't just put the code in loginVerify(). I //don't think it should matter.
String str = verifyLog(); //Does the actual reading
     str = str.substring(1);
     if (str == placeHold) //Don't worry about not making placeHold,
//I made it global for testing reasons.
          return true;
     else
          return false;
private String verifyLog() throws IOException
     String str;
     while (true)
          str = fileIn.readLine();
          if (str == null)
               break;
          else if (str.charAt(0) == 1)
               return str;
          //ADDITION OF OTHER NUMBERS
          else
               return str = "invalid";
private void readIn() throws IOException
     BufferedReader console =
new BufferedReader(new InputStreamReader(System.in));
openInputFile(fileName);
if (fileIn == null)
System.out.println("*** Can't open " + fileName + " ***");
return;
private static void openInputFile(String fileName)
try
fileIn = new BufferedReader(new FileReader(fileName));
catch (FileNotFoundException e)
So it's fairly simple. It checks for validity and then reads lines until it finds one with the first char as '1' when it finds it, it reads the rest of the line off.
The error I'm getting is as follows: Exception java.io.IOException must be caught, or it must be declared in the throws clause of this method.
I've added throws IOException to them in attempts to fix the error but to no avail. I've tryed putting the catch in different spots... again, doesn't work.
I'm using codewarrior IDE version 5. I'm fairly sure it's the newest. I installed Java SDK 1.3 with codewarrior originally but I installed 1.4.1 recently.
If you need to see anything else about it, please tell me. I'd be more than happy to post a little more if it'll help.
Thanks

Ok. I worked through a bunch of throws and now I've found one I can't seem to conquer.
private String verifyLog()
       String str = "";
       while (true)
            try {
            str = fileIn.readLine();
            catch (FileNotFoundException g) {
            if (str == null)
                 break;
            else if (str.charAt(0) == 1)
                 return str;
            //ADDITION OF OTHER PEOPLE
            else
                 return str = "invalid";
       return str = "invalid";
  }This time the error is at the reference to readLine() and it tells me the same error as before. I have a catch set up there, don't I?
readLine() is something I didn't create so I don't know how I'd tell it to throw an exception if I had to...
Thanks

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