confused with return value of assignment operation in java

Question

I tried to understand how exactly the return value of assignment operation works. followed by this post "Java returns the assigned value".

    boolean b1 = false, b2 = false;
    if (b2 = b1 == false) {
        System.out.println("true");
    } else {
        System.out.println("false");
    }

b2 is true because of (b1 == false) return true, then the return of b2 assignment b2 = true

Or is it because of some other reason?

Answer 1

You've got it right. The operator precedence rules make sure that first the == operator is evaluated. That's b1==false, yielding true. After that, the assigned is executed, setting b2 to true. Finally, the assignment operator returns the value as b2, which is evaluated by the if statement.