Indeed, Reader/Writer framerwork provides buffering (esp. now). However, in my experience the writers are not very commonly used which is a stark contrast to B

Indeed, Reader/Writer framerwork provides buffering (esp. now). However, in my experience the writers are not very commonly used which is a stark contrast to BufferedReader that's everywhere (it comes with readLine()). Instead, writing is commonly implemented via encoding/conversion/etc. to a byte[] and then written directly to the output stream.