试题详情
多项选择题 class A {  }  class Alpha {  private A myA = new A（）；  void dolt（ A a ） {  a = null；  }  void tryIt（） {  dolt（ myA ）；  }  }  Which two statements are correct？（）  

A、 There are no instanced of A that will become eligible for garbage collection.

B、 Explicitly setting myA to null marks that instance to be eligible for garbage collection.

C、 Any call on tryIt（） causes the private instance of A to be marked for garbage collection.

D、 Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection.

  • B,D

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