2.(b1 | b2 & b3 ^ b4) 的结果为true还是false?
boolean b1,b2,b3,b4;
b1 = b2 = b3 = b4 = true;
(b1 | b2 & b3 ^ b4)
答案:先b2&b3 = true; 再 true^b4 = false; 最后b1|false = true;
true^true=false
优先级:与非或

2.(b1 | b2 & b3 ^ b4) 的结果为true还是false?
boolean b1,b2,b3,b4;
b1 = b2 = b3 = b4 = true;
(b1 | b2 & b3 ^ b4)
答案:先b2&b3 = true; 再 true^b4 = false; 最后b1|false = true;
true^true=false
优先级:与非或