Scanner vs InputStreamReader

Question

Does anyone happen to know if there is any difference with regards to performance between the two methods of reading input file below? Thanks.

1) Reading a file wit

Answer 1

In terms of performance, Scanner is definitely the slower one, at least from my experience. It's made for parsing, not reading huge blocks of data. InputStreamReader, with a large enough buffer, can perform on par with BufferedReader, which I remember to be a few times faster than Scanner for reading from a dictionary list. Here's a comparison between BufferedReader and InputStreamReader. Remember that BufferedReader is a few times faster than Scanner.