[Advanced-java] BAsic class question

[justin@xxxxxxxxxx (Justin Couch)]

dovle wrote:

> Suppose I have a class X and I obtain the 
> Class xClass = X.class ; 
> 
> Later, I want to check if an object is instance(exactly) of this class. 
> 
> what is the best way to do this ? 
> 
> obj.getClass() == xClass ;
> 
> It works always ? ( aka : there is only one Class object instantiated for a 
> class). 

Nope. Best bet is to look at the reflection stuff. You'll want the 
isInstance() method in Class.


-- 
Justin Couch                         http://www.vlc.com.au/~justin/
Java Architect & Bit Twiddler              http://www.yumetech.com/
Author, Java 3D FAQ Maintainer                  http://www.j3d.org/
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