My code is supposed to read several file names from the console until the "end", sort them by the number that follows the "part" word in the name (tried to do so with the help of my Sorter class), create a file in the same directory and name it the same way as the other files, just without "partN", and then copy the data from the read files to the one I created. According to my logic, I did all of that, while the validator doesn't agree with me at all:(. I wonder what I'm missing here.