@ Override @ CanIgnoreReturnValue public int read ( byte [ ] bytes , int off , int len ) throws IOException { int numOfBytesRead = in . read ( bytes , off , len ) ; if ( numOfBytesRead != - 1 ) { hasher . putBytes ( bytes , off , numOfBytesRead ) ; } return numOfBytesRead ; }
Reads the specified bytes of data from the underlying input stream and updates the hasher with the bytes read .