Check if file is already open

Question

I need to write a custom batch File renamer. I\'ve got the bulk of it done except I can\'t figure out how to check if a file is already open. I\'m just using the java.

Answer 1

If file is in use FileOutputStream fileOutputStream = new FileOutputStream(file); returns java.io.FileNotFoundException with 'The process cannot access the file because it is being used by another process' in the exception message.