Given： Which statement is true？（） A: 420 is the output. B: An exception is thrown at runtime. C: All constructors must be declared public. D: Constructors CANNOT use the private modifier. E: Constructors CANNOT use the protected modifier.

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2022-06-03 问题

Given： Which statement is true？（） A: 420 is the output. B: An exception is thrown at runtime. C: All constructors must be declared public. D: Constructors CANNOT use the private modifier. E: Constructors CANNOT use the protected modifier.