问题:
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;
Given:
Which code, inserted at line 16, will cause a java.lang.ClassCastException?()
● 参考解析
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