converting byte array to long

[jov]

i would like to copy the contents of a byte array to a long variable. my code looks like this:

long key = 0;
for (i = 0; i < 8; i++) {
key <<= 8;
key |= (long)(buffer[i]); //<- this line causes the problem
}

however, when i run the program, there is an error message saying "unable to handle exception". what may have cause this problem?

[weaknessforcats]

Good trick. An 8-element byte array spans 64 bits and a long is probably 32 bits.

Even if the long is 64 bits, is your machine big endian or little endian and how is your byte array structured ??

Exactly what are you trying to do??