[Advanced-java] BAsic class question

[sbr@xxxxxxxxxxx (Sybille Breunig)]

Why don't you use :
if (obj instanceof X)
    // do anything

----- Original Message -----
From: "Justin Couch" <justin@xxxxxxxxxx>
To: <advanced-java@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Wednesday, February 27, 2002 9:34 AM
Subject: Re: [Advanced-java] BAsic class question


> 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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