A <code>BufferedInputStream</code> adds functionality to another input stream-namely, the ability to buffer the input and to support the <code>mark</code> and <code>reset</code> methods. When the <code>BufferedInputStream</code> 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 <code>mark</code> operation remembers a point in the input stream and the <code>reset</code> operation causes all the bytes read since the most recent <code>mark</code> operation to be reread before new bytes are taken from the contained input stream.