Project Euler | Problem 2

public class Prob2 {
    public static void main(String[ ] args) {
        int a = 0;
        int b = 1;
        int sum = 0;

        while (b < 4000000) {
            sum += (b & 1) == 0 ? b : 0;

            int temp = a;
            a = b;
            b = temp + b;
        }

        System.out.println(sum);
    }
}