How can I convert a 4-byte array to an integer?

Question

I want to perform a conversion without resorting to some implementation-dependent trick. Any tips?

Answer 1

public static int toInt( byte[] bytes ) {
int result = 0;
for (int i=0; i<3; i++) {
  result = ( result << 8 ) - Byte.MIN_VALUE + (int) bytes[i];
}
return result;
}