+ 2

I think it's always better to use && instead of &. Are there any real life scenarios where & is more useful than && ?

If we're using &&, second part will not be evaluated if first part is false. Which are the scenarios where we need to check second part even if the first part is false?

7th Jun 2017, 5:04 AM
Ashish Kulkarni
Ashish Kulkarni - avatar
2 odpowiedzi
+ 6
These are two different operators that you use for different tasks. First, && is a logical AND operator, you use it to evaluate boolean expressions in if, else if statements, etc. Second, & is a bitwise AND operator, you use it when you are working with binary numbers and need to change their bits. Don't mix them up
7th Jun 2017, 5:47 AM
Eligijus Silkartas
Eligijus Silkartas - avatar
+ 12
@Ashish Kulkarni is actually right the & operator works in an if too, and like he said it evaluates the whole expression even if the first one is false here is an example: int x = 0; if (false & (1 == ++x) { System.out.println("Inside"); } System.out.println(x); //output "1" it's not used very often but there might be some sort of scenario when you need sth like my example imagine a matchmaking system where you need to count the users even when they are not connected yet if (user.connected & (users++ = maxUserAmount){ startgame (); }
7th Jun 2017, 5:55 AM
Kamil
Kamil - avatar