public FastBufferedInputStream(final InputStream is,final int bufferSize){
  this(is,new byte[ensureBufferSize(bufferSize)]);
}

public FastBufferedInputStream ( final InputStream is , final int bufferSize ) { this ( is , new byte [ ensureBufferSize ( bufferSize ) ] ) ; }
creates a new fast buffered input stream by wrapping a given input stream with a given buffer size .
