[GR-Jug] inheritance ?

[Derek Vredevoogd]

OK.  Great Thanks a lot Jeremy.
I've never used some of those last modifiers either.
Just thought I would through them in the mix since they exist.
The best reference I've found is the 
"Java Complete Java 2 Certification Study Guide"
It mentions a lot of the things you said here.
Unfortunately, it doesn't mention much about it.
Let me know if you find a book that explains it.

THanks again.

-----Original Message-----
From: Jeremy Frens [mailto:jdfrens at calvin.edu]
Sent: Monday, February 02, 2004 9:56 PM
To: Grand Rapids Java Users Group Mailing List
Subject: Re: [GR-Jug] inheritance ?


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On Feb 2, 2004, at 6:02 PM, Derek Vredevoogd wrote:
> But, I still have my original question concerning if modifiers affect
> inheritance.

Do these factoids at least partially answer your question:

final class: cannot be subclassed.

private method: subclass inherits it, but cannot access it directly.  
Methods  defined in the superclass can still get at it.  Cannot be 
overridden.

public & protected method: subclass inherits it, and can access it 
directly, and can override it.

final method: subclass is not allowed to override it regardless of its 
visibility.

An overridden method cannot have a more restrictive visibility; it 
*can* have a more open visibility.

I'm just spitting out random facts I know about the modifiers and 
inheritance.  Is there a particular modifier you're interested in (like 
"synchronize" which I know nearly nothing about)?

jdf

***  Jeremy D. Frens --- Professor of Computer Science --- Calvin 
College ***
"Oh, for the love of puppies!"  -- Ned Flanders, _The Simpsons_

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