Ah. Cheers mate!
I reckon thats just what Im looking for. :-)
-----Original Message-----
From: Daniel H. F. e Silva [mailto:[EMAIL PROTECTED]
Sent: Wednesday, 8 October 2003 19:58
To: Struts Users Mailing List; [EMAIL PROTECTED]
Subject: Re: [OT] [Reflection/Classes] doing something like instanceof
at runtime
Andrew,
I don't know if this is the best way, but you can try something like that:
boolean isInstanceOf(Object o, String klass) {
Class c = null;
try {
c = Class.forName(klass);
} catch (ClassNotFoundException e) {
// TODO
}
return c.isInstance(o);
}
Regards,
Daniel.
--- Andrew Hill <[EMAIL PROTECTED]> wrote:
> I want to be able to check if an object is an instance or a subclass of a
> specified class - where that class is specified in a string that is only
> known at runtime.
> For example to have the following code print out "bobs got a date":
>
> boolean isInstanceof(Object o, String klass)
> {
> //TODO
> }
>
> java.sql.Timestamp bob = new java.sql.Timestamp(0);
> if( isInstanceof( bob, "java.util.Date" ) )
> {
> System.out.println("bobs got a date");
> }
>
>
> One idea that occured to me was to get the classname of bob, and test
> against the string, and if that didnt match, to get the classname of that
> classes superclass ( and test that and so on, but Im wondering if there
> exists a more efficient technique...
>
>
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