java - 单目运算符问题；

Question

int a=4;
b=a*a++;
b的结果？

单目运算符优先级比双目运算符高，理应是先累加然后相乘得到20，为什么程序运算结果是16？

Answer 1

int a = 4;
int b = a*++a; // 20

The priority of increment and decrement is indeed higher than *. For example, in the above example, is operated first ++a

But there is still a difference between ++a a++

Answer 2

a++ takes the value first and then calculates the increment by 1, ++a takes the value first and then takes the value