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inner classes

3 replies on 1 page. Most recent reply: Mar 30, 2003 8:09 AM by Aladdin Mouhaimeed

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Aladdin Mouhaimeed

Posts: 11
Nickname: aladdin11
Registered: Mar, 2003

inner classes

Posted: Mar 26, 2003 3:30 AM

A nested class declared within a method or other smaller block of code has access to any final, local variables in scope.
My question is: why should a local variable in a method be final to be accessed from an inner class in this method.
Can you just tell me what is the point of that?.

Vincent O'Sullivan

Posts: 724
Nickname: vincent
Registered: Nov, 2002

Re: inner classes

Posted: Mar 26, 2003 8:52 AM

I think it is so that the link between the variable and the inner class can be made at compile time.

Vince.

Matt Gerrans

Posts: 1153
Nickname: matt
Registered: Feb, 2002

Re: inner classes

Posted: Mar 26, 2003 10:23 AM

It makes sense, since an instance of the inner class that is created could outlive the scope of the method that created it. In that case, the inner class object (that was probably returned or passed to another method) will have a reference that is in a scope that no longer exists.

Aladdin Mouhaimeed

Posts: 11
Nickname: aladdin11
Registered: Mar, 2003

Re: inner classes

Posted: Mar 30, 2003 8:09 AM

Both of you gentlemen have made me a good favor, thank you very much indeed.

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