试题详情
- 单项选择题 Given: Which code, inserted at line 16, will cause a java.lang.ClassCastException?()
A、Alpha a = x;
B、Foo f = (Delta)x;
C、Foo f = (Alpha)x;
D、Beta b = (Beta)(Alpha)x;
- B
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A、Alpha a = x;
B、Foo f = (Delta)x;
C、Foo f = (Alpha)x;
D、Beta b = (Beta)(Alpha)x;
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