Search:

From that error message (and that error message alone), it looks like you're passing in a JTextField (whose toString() method returns that stuff) into the File you want to open, instead of the text...

I'm still trying to work through that code, and honestly I'm not sure what the problem is. Are you just trying to strip something out of a String?

What do you expect to happen, and what happens...

That's a lot of code to wade through- you might consider posting an SSCCE instead.

Can't you just use String.replaceAll() or use a different path separator, like "/"? Or use the system file path...