单选题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;
单选题
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;
参考解析
解析:
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