Hi,


I have a class which takes a list of filenames as argument.  Before processing

them, I want to make sure they are PDF files. Right now, what I do is to start 

processing and catch the associated exception, then I know it's not a valid PDF.



But I'm convinced there's a better way of doing this.  Is there a method

such as isValidPDF(), or something similar, I can use to validate a document

before starting to process it?



What I want to do is simple:

1. loop through all files

2. if not PDF, print error message, discard file, move to next file

3. Process remaining (valid) files.



Thx.



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