수다닷컴

1.

class TestA{
TestB b;
TestA(){
b = new TestB(this);
}
}
class TestB{
TestA test;
TestB(TestA test){
this.a = a;
}
}public class ThisProject {

public static void main(String[] args) {
new ThisProject().makeThings();

}
void makeThings(){
TestA test = new TestA();
}

}
정답
The Object referenced by a is eligible for garbage collection.
The Object referenced by b is eligible for garbage collection.
null로 해주지 않아도 가비지콜렉션 대상이 되는 건가요?2.
void start(){
A a = new A();
B b = new B();
a.s(b);
b=null;
a=null;
System.out.println(start completed);

}When is the B object, created in line 14, eligible for garbage collection?정답:
There is no way to be absolutely certain.
s때문에 그런건가요?

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