AccessControlException -- Where is it looking for my file?

I developed part of my program using WebGain, but at my house I'm using NetBeans.
My program (which consists of three .java class files) is using a FileReader to read in a file called "courses.txt".
Example code:
BufferedReader inStream = new BufferedReader (new FileReader("courses.txt"));
When it goes to open this file, it throws an "AccessControlException".
My courses.txt is located in the same directory as my .java files. Is this incorrect? I've tried renaming the courses.txt file to see if it sees the file at all, but it STILL gives me an AccessControlException even when the file is no longer present.
So, where is NetBeans (my java program) looking for my file?

I'm reading in the file from a set file name. I don't
want the user to be able to select it.
I'm getting an error when I do the following (as you
suggested):
BufferedReader inStream = new
BufferedReader(getClass().getResourceAsStream("/courses
txt"));
The error I get is "cannot resolve symbol".Is the above line within a non-static method? If not, then replace "getClass()" with [yourclassname].class
Also, you'll have to play with the API. Since getResourceAsStream returns an InputStream (not a Reader), you may have to wrap it with an InputStreamReader as well.
>
Also, how would I load an image using that method?The Image API have methods/constructors taking file names, as well as URLs. To load from the classpath, use the ones taking a URL. So, for example, instead of Image("fileName"), use Image(getClass().getResource("/filename"))

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