novajug : Message: Re: [novajug] Re: What's the point??

if only that were true...

On Fri Jul 3 18:31 , David Medinets <david.medinets@...> sent:

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> On Fri, Jul 3, 2009 at 5:30 PM, David Bock<dbock@...> wrote:
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>> Code that doesn't matter becomes garbage collected by the forces of time.
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>This quote deserves to live forever!
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I'm trying to understand why someone would want to create an empty interface (ex: java.io.Serializable). What does the Java API Documentation mean when it...

stoicllc

Jun 12, 2009
7:07 pm

Serializable is a "marker interface<http://en.wikipedia.org/wiki/Marker_interface_pattern>". The methods you refer to are usually implemented when your class...

Rich Cariens
richcariens

Jun 12, 2009
7:11 pm

Correction: Externalizable does not require the methods you describe....

Rich Cariens
richcariens

Jun 12, 2009
7:14 pm

Hi Steve, Serializable is a "marker" interface - as such it gives permission for instances of marked classes to use the built-in serialization process baked ...

Michael Aube
feelthe4c

Jun 12, 2009
7:48 pm

Thanks...the mention of "marker" interface helps. I don't know if I've got the concept entirely, but I think one would implement a marker interface like...

stoicllc

Jun 13, 2009
6:35 pm

Steve - Check out the example class at: http://gist.github.com/129520 I try to show that if you implement Cloneable, but don't override clone(), you may not...

Keith R. Bennett
krbennettmd

Jun 14, 2009
2:29 am

Steve - I cleaned the file up a little, renamed it CloneTestA.java, and added an example with the probable desired behavior, called CloneTestB.java. They are...

Keith R. Bennett
krbennettmd

Jun 14, 2009
10:09 pm

Keith, Thanks for the example. Steve...

stoicllc

Jun 15, 2009
2:01 pm

you don't have to implement clone() method, in many cases, if your object's shallow, e.g....

jawabean

Jun 15, 2009
5:53 pm

... Shallow? Please don't start a flame war by insulting someone's objects. That's low......

David Medinets
medined

Jun 15, 2009
6:29 pm

Sorry I didn't respond sooner - just catching up on about a month's worth of emails. The notion of a 'marker' interface is somewhat retired in Java now that we...

David Bock
javaguy_98

Jul 3, 2009
9:31 pm

... This quote deserves to live forever!...

David Medinets
medined

Jul 4, 2009
1:31 am

... i doubt that annotations would make it easier to understand the "marker" concept. they're nice feature, but it's a new thing to understand for a newbie,...

jawabean

Jul 4, 2009
3:33 pm

I would much rather see @Serializable than implements Serializable and have to explain because of historical reasons, why it is an interface. Although I agree...

David Bock
javaguy_98

Jul 11, 2009
6:54 pm

You can think of the Serializble interface as a class level annotation. I is a way to add meta-data to a class without adding any methods or attributes. ...

clay_shooter

Jun 13, 2009
11:38 am

if only that were true......

steve-vago@...
SAV_3096

Jul 4, 2009
1:53 am

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