Short - Circuit OR and OR

Asked Feb 05 '18 at 16:58

Active Feb 05 '18 at 17:07

Viewed 39 times

I am still getting difficulty in understanding the difference between OR and short-circuit OR Here is the code

package if_else_if;

public class if_Else_if {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        int month = 4;
        String season;

        if(month == 12 || month == 1 || month == 2)
            season = "Winter";
        else if(month == 3 || month == 4 || month == 5)
            season = "Spring";
        else if (month == 6 || month == 7 || month == 8)
            season = "Summer";
        else if (month == 9 || month == 10 || month == 11)
            season = "Autumn";
        else 
            season = "Bogus month";

        System.out.println("April is a " + season + " month");
    }

}

If I simply put 'OR' in place of 'short circuit OR'. I get the same answer. Is it the execution time that makes the difference. As when we use 'OR', it evaluates all the conditions whereas 'Short circuit OR' skips the subsequent conditions after getting 'month == 4'

edited Feb 05 '18 at 17:00

Mad Physicist

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asked Feb 05 '18 at 16:58

Stephen Nollan

Read this : https://stackoverflow.com/questions/8759868/java-logical-operator-short-circuiting – z atef Feb 05 '18 at 17:02
4

Try `int a = 0; if (a == 0 || 100 / a == 2) { System.out.println("a is 0 or 50); }`. Then replace `||` with `|` and see what happens. – DodgyCodeException Feb 05 '18 at 17:06
@DodgyCodeException it shows exception in case of | – Stephen Nollan Feb 05 '18 at 17:12
@StephenNollan exactly! And that demonstrates the difference between `||` and `|`. – DodgyCodeException Feb 05 '18 at 17:15

Short - Circuit OR and OR

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