Typically, what does it mean when java returns a “The parameter is incorrect”

Question

I am creating a file like so

try {
    File file = new File(workingDir, obj.getName() + \".xls\");
    outputStream = new FileOutputStream(file);
} catch (FileN         


        

Answer 1

Perhaps the application doesn't have the correct access to write to the file? Is it read-only or otherwise protected?

FileOutputStream.open() is a native method, I would assume any sort of exception message such as "The parameter is incorrect" is coming from the underlying OS.

BTW: the File constructor does not call FileOutputStream.open(), so is the exception not actually coming from the code you posted here?