第108題

Given:
11. class Snoochy {
12. Boochy booch;
13. public Snoochy(){booch = new Boochy(this);}
14 }
15.
16. class Boochy{
17. Snoochy snooch;
18. public Boochy(Snoochy s){snooch = s;}
19. }
And the statements.
21. public static void main(String[] args){
22. Snoochy snoog = new Snoochy();
23. snoog = null;
24. //more code here
25. }

Which statement is true about the objects referenced by snoog, snooch, and booch immediately after line 23
executes?

A. None of these objects are eligible for garbage collection.
B. Only the object referenced by booth is eligible for garbage collection.
C. Only the object referenced by snoog is eligible for garbage collection.
D. Only the object referenced by snooch is eligible for garbage collection.
E. The objects referenced by snooch and booth are eligible for garbage collection.

答案：E
參考：8-7 資源回收機制
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