Which of the following statements is true the BufferReader class in Java and why?
OPTIONS:
(A) This class reads text from a character output stream.
(B) This class allows reading only one character at a time
(C) This class allows you to wrap any subclass of the Reader class with any other subclass of the reader class.
(D) This class buffers the data to increase performance.
2006-10-08 18:36:55 · 2 answers · asked by K Sengupta 4 in Computers & Internet ➔ Programming & Design
The answer is D, as indicated in the below javadoc:
* Read text from a character-input stream, buffering characters so as to
* provide for the efficient reading of characters, arrays, and lines.
*
*
The buffer size may be specified, or the default size may be used. The
* default is large enough for most purposes.
*
*
In general, each read request made of a Reader causes a corresponding
* read request to be made of the underlying character or byte stream. It is
* therefore advisable to wrap a BufferedReader around any Reader whose read()
* operations may be costly, such as FileReaders and InputStreamReaders. For
* example,
*
*
* BufferedReader in
* = new BufferedReader(new FileReader("foo.in"));
*
Programs that use DataInputStreams for textual input can be localized by
* replacing each DataInputStream with an appropriate BufferedReader.
2006-10-08 18:58:02 · answer #1 · answered by addtheninth 2 · 0⤊ 0⤋
A,B OPTIONS ARE TRUE
2006-10-09 01:44:23 · answer #2 · answered by ch_nagarajind 3 · 0⤊ 0⤋