question: private long fileChannelRead ( IntBuffer slabBuffer ) throws IOException { long filePos = fileChannel . position ( ) ; long count = fileChannel . transferTo ( filePos , slabBuffer . remaining ( ) << 2 , INT_BUFFER_WRAPPER . init ( slabBuffer ) ) ; fileChannel . position ( filePos += count ) ; return count ; }
target:  Special method for reading data into an IntBuffer, this is done to minimize data copy