Java simplify the syntax

Question

What would be the most terse way in Java to check for the following condition

int m, n;

The condition to check is whether either m or n are negative but both shouldn't be negative. I'm looking for a terse yet simple syntax

Answer 1

(m < 0) ^ (n < 0)

Note that in this context, ^ is the logical XOR operator (yes, I do mean "logical", distinct from "bitwise").