anonymous inner class

[gangqiang zhang]

Hello,everybody

Given the following,

class Bing{
  Bing(){}
  Bing(String s){}
}
 
class Bang extends Bing{
  Bang(){}
  Bang(String bangs){Super(bangs);}
  //insert code here
}

Which two create an anonymous inner class from within the class Bang ?

Bang b = new Bing("Foo"){};

Bing b = new Bing(343){};

Bing b = new Bing(){"Foo";};

Bing b = new Bang(){};

Bing b = new Bing.Bang("Foo"){};

The reference answer is C & D.Why the answer C is correct answer? Could anybody give me a explanation.

[Seb Mathe]

Imagine that the statement Super(bangs); is replaced with super(bangs) (code won't compile otherwise), C is incorrect because the statement "Foo"; is invalid.

[gangqiang zhang]

thanks, seb

The question is on the CD of K&B's book.

[Kevin Lam]

what makes the answer>annonymous class ? I thought to make it annonymous you haveto extends or implements there and then the answer looks like a normal innerdass only

[gangqiang zhang]

thx,

[gangqiang zhang]

Bing b1 = new Bing("Foo"){};  

Hence,I can get another anonymouse inner class like the preceding code.It is a subclass of Bing class.

Regards

zhang

[Leoo yu]

That's lapsus calami .