public static int copy ( InputStream input , OutputStream output , int byteCount ) throws IOException { byte buffer [ ] = new byte [ ioBufferSize ] ; int count = 0 ; int read ; while ( byteCount > 0 ) { if ( byteCount < ioBufferSize ) { read = input . read ( buffer , 0 , byteCount ) ; } else { read = input . read ( buffer , 0 , ioBufferSize ) ; } if ( read == - 1 ) { break ; } byteCount -= read ; count += read ; output . write ( buffer , 0 , read ) ; } return count ; }
Copies specified number of bytes from input stream to output stream using buffer .