一道垃圾的问题

[iceyou]

QUESTION NO: 76
Given:
1. class Bar { }
1. class Test {
2. Bar doBar() {
3. Bar b = new Bar();
4. return b;
5. }
6. public static void main (String args[]) {
7. Test t = new Test();
8. Bar newBar = t.doBar();
9. System.out.println(“newBar”);
10. newBar = new Bar();
11. System.out.println(“finishing”);
12. }
13. }
At what point is the Bar object, created on line 3, eligible for garbage collection?
A. After line 8.
B. After line 10.
C. After line 4, when doBar() completes.
D. After line 11, when main() completes.
Answer: C

我感觉是B

[taolei]

我怎么觉得是D

[taolei]

哦，看错。
我也认为应该是B

[pbMaster]

我有没有看错啊？
答案我认为是B啊！
如果是C，那8行的newBar 将指向一个空。

[pbMaster]

哪位兄弟加个测试代码试验以下嘛。

[peacock_king]

就是B呀！
当一个对象没有任何参照时，就会被回收。