BufferInputStream describe it??
public class BufferedInputStream
A BufferedInputStream adds functionality to another
input stream-namely, the ability to buffer the input and to
support the mark and reset methods. When the
BufferedInputStream is created, an internal buffer array
is created. As bytes from the stream are read or skipped,
the internal buffer is refilled as necessary from the
contained input stream, many bytes at a time. The mark
operation remembers a point in the input stream and the
reset operation causes all the bytes read since the most
recent mark operation to be reread before new bytes are
taken from the contained input stream.