java - Specific difference between bufferedreader and filereader -

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i know specific difference between bufferedreader , filereader.

i know bufferedreader more efficient opposed filereader, can please explain why (specifically , in detail)? thanks.

in simple manner:

a filereader class general tool read in characters file. bufferedreader class can wrap around readers, filereader, buffer input , improve efficiency. wouldn't use 1 on other, both @ same time passing filereader object bufferedreader constructor.

very detail

filereader used input of character data disk file. input file can ordinary ascii, 1 byte per character text file. reader stream automatically translates characters disk file format internal char format. characters in input file might other alphabets supported utf format, in case there 3 bytes per character. in case, also, characters file translated char format.

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as output, practice use buffer improve efficiency. use bufferedreader this. same class we've been using keyboard input. these lines should familiar:

bufferedreader stdin =     new bufferedreader(new inputstreamreader( system.in ));

these lines create bufferedreader, connect input stream keyboard, not file.

source: http://www.oopweb.com/java/documents/javanotes/volume/chap84/ch84_3.html


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