Fastest way to check if two integers are on the same side of 0

Question

I need to check if two integers are on the same side of zero many times. I don\'t care if it\'s positive or negative, just that it\'s the same side... and performance is very im

Answer 1

 int int1    = 3;
 int int2    = 4;
 boolean res = ( (int1 * int2) >= 0) ? true : false;

 System.out.println(res);