This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
In our application we use 3rd party checksum digest lib that requited to give source file as a byte array or as a ByteBuffer. Source files can be very to 1Mb to ~1GB . Here what is the most efficient approach to read those files in to byte array or ByteBuffer ?
Are you sure the lib requires the entire file to be passed into one single byte or ByteBuffer? Is it not something like MessageDigest that allows you to update the checksum with chunks at a time? For instance: