以下( )不是Object类的方法A)clone()B)finalize()C)toString()D)hasNext()

以下( )不是Object类的方法

A)clone()

B)finalize()

C)toString()

D)hasNext()


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单选题What allows the programmer to destroy an object x?()A x.delete()B x.finalize()C Runtime.getRuntime().gc()D Explicitly setting the object’s reference to null.E Ensuring there are no references to the object.F Only the garbage collection system can destroy an object.

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