请问如下代码执行后a和b的值分别是什么

int a = 22;
int b = 11;
a = b + (b = a) * 0;
答案：a=11 b=22
public class InterviewDemo {
public static void main(String[] args) {
int a = 22;
int b = 11;
a = b + (b = a) * 0;
System.out.println(a);
System.out.println(b);
}
}