SCJP(OCPJP) 考古題解析 第８題

Given:

public class Spock {
    public static void main(String[] args) {
        Long tail = 2000L;
        Long distance = 1999L;
        Long story = 1000L;
        if ((tail > distance) ^ ((story * 2) == tail))
            System.out.print("1");
        if ((distance + 1 != tail) ^ ((story * 2) == distance))
            System.out.print("2");
    }
}

What is the result?


A. 1
B. 2
C. 12
D. Compilation fails.
E. No output is produced.
F. An exception is thrown at runtime.

答案：Ｅ


解析：

運算符號(^) 表示 XOR

true^true→false
false^false→false
true^false→true