Question

what is buffered reader

Answer 1

The java oi buffered reading class test from a character input stream, buffering characters so that to provide efficient reading of characters, arrays and line

Answer 2

The JAVA.io Buffered reader class reads text from a character- input stream , buffering characters so as to provide for the efficient reading of the characters, arrays and lines.

1) The buffer size may be specified or the default size may be used.
2) Each read request made of a reader causes a corresponding read request be made of the underlying character byte stream.

Hope it is useful :)