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Given :

interface I1{}
class C1 {}
class C2 extends C1{}
class C3 extends C1{}
class C4 implements I1{}
class C5{}

and the following declarations and assignments :


Any comments about the last two sentences would be highly appreciated.

Thanks.
 
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you will find the answer from this url


the complier infer the subclass of c5 maybe implements il interface
so it will compile well,but generate a runtime time error


[ March 31, 2006: Message edited by: Changchun Wang ]
 
Edisandro Bessa
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Thank you Changchun,

Very good link. Thanks.
 
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