Java and C# - byte array to long conversion difference
This is a difference in endianness.
If you reverse the byte array, it works as expected:
BitConverter.ToInt64(new byte[] { 8, 204, 137, 162, 234, 40, 150, 50 }, 0)You can set the endianness in Java by calling bb.order(ByteOrder.LITTLE_ENDIAN).
By the way, the easiest way to play with these things is to use LINQPad.