Is the left-to-right order of operations guaranteed in Java?

Question

Consider this function:

public static final int F(int a, int b) {
    a = a - 1 + b;
    // and some stuff
    return a;
}

Is it required

Answer 1

You can see here the operator precedence in Java: http://bmanolov.free.fr/javaoperators.php . Because + and - have the same precedence, they will be executed in the order in which they appear.

If you want to be more clear about what which operation takes place first (or if you want to break the built-in precedence), you can (and should) use parantheses (( and )), like this:

x = (a - b) + (c * (d - e))