java - How to use greater than or equal in a switch statement

Question

What is the best way to check if variable is bigger than some number using switch statement? Or you reccomend to use if-else? I found such an example:

int i;

if(var1>var2) i = 1;
if(var1=var2 i = 0;
if(var1<var2) i = -1;

switch (i);
{
    case -1:
    do stuff;
    break;

    case 0:
    do stuff;
    break;

    case 1:
    do stuff;
    break;

}

What can you tell a novice about using "greater than or equal" in switch statements?

Answer 1

Not sure if this is what you're asking, but you could do it this way:

int var1;
int var2;

int signum = Long.signum((long)var1 - var2);
switch(signum) {
    case -1: break;
    case 0: break;
    case 1: break;
}