問題詳情
第41題Given:1. public class KungFu{2. public static void main(String[] args){3. Integer x = 400;4. Integer y = x;5. x++;6. StringBuilder sb1 = new StringBuilder("123");7. StringBuilder sb2 = sb1;8. sb1.append("5");9. System.out.println((x == y) + " " + (sb1 == sb2));10. }11. }What is the result?SCJP 6.0 認證教戰手冊 黃彬華著 碁峰出版22
(A) true true
(B) false true
(C) true false
(D) false false
(E) Compilation fails.F. An exception is thrown at runtime.
參考答案
答案：B
難度：簡單0.798561
統計：A(4),B(111),C(7),D(7),E(5)