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分享关于gc的一道题。
Given:
10. public Object m() {
11. Object o = new Float(3.14F);
12. Object [] oa = new Object[1];
13. oa[0] = o;
14. o = null;
15. return oa[0];
16. }
When is the Float object, created in line 11, eligible for garbage collection?
A. Just after line 13.
B. Just after line 14.
C. Never in this method.
D. Just after line 15 (that is, as the method returns).
10. public Object m() {
11. Object o = new Float(3.14F);
12. Object [] oa = new Object[1];
13. oa[0] = o;
14. o = null;
15. return oa[0];
16. }
When is the Float object, created in line 11, eligible for garbage collection?
A. Just after line 13.
B. Just after line 14.
C. Never in this method.
D. Just after line 15 (that is, as the method returns).
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yangjun2 2003-08-20
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class A{
}
public class B{
private A a = new A();
static setA(A a){
a = null;
}
......
}
只是我考scjp遇到的难题，问题是a在什么情况下可以被gc收集！
}
public class B{
private A a = new A();
static setA(A a){
a = null;
}
......
}
只是我考scjp遇到的难题，问题是a在什么情况下可以被gc收集！
lwccb 2003-08-19
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显然是答案错了，我的J@Whiz中的题目答案是C，没错的
我下周就要去考了，断断续续复习了三个月了
我下周就要去考了，断断续续复习了三个月了
iceyou 2003-08-19
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我觉得也是C，然道又是答案错了？
lwccb 2003-08-19
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答案应该是C
iceyou 2003-08-19
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答案是B，谁能解释一下？
