Question

For instance can I have a variable

int x;

and tell the compiler x can never be greater than 20 or less than -20 without having to write a method to check the value every iteration through the loop? (I should mention here this is for a vector-based game’s velocity variable.

Answer 1

Only set the variables via a setter method. Inside of this method, throw an exception if it attempts to set the value out of range. Note that this won’t work on the compiler side of things but rather at runtime which is where I believe this sort of check is necessary.