单项选择题

Given：

Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）

A.Line 16
B.Line 17
C.Line 18
D.Line 19

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单项选择题

A.Exception
B.A NullPointerException is thrown at runtime.
C.Compilation fails because of an error in line 20.
D.Compilation fails because of an error in line 14.

单项选择题

Given： What is the result？（）

A.null
B.zero
C.some
D.Compilation fails.
E.An exception is thrown at runtime.

Given： Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）

Given：

Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection？（）