Question

I have the following lines in my code:

    if (command.equals("sort") && args.length == 2) {
    //run some program
    }

Someone suggests that I should use two separate if statements because there’s no need to evaluate any of the other if statements if the command does not equal to “sort”​, regardless of whether or not the args length is correct.

So according to that that, I need to rewrite my code to:

if (command.equals("sort")) {
  if (args.length == 2) {
    //run some program
  }
}

I know they both do the job, but my question is which one is better and more efficient?

Answer 1

No, that’s not true. They call it short circuit, if the first condition evaluates as false, the second one would not be evaluated at all.