finding out weather an object extends a certain class

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hgwoss@gmx.de - 24 Nov 2005 11:03 GMT

I know that I can find out an object's classname with
getClass().getName()

However, I do not know how to find out weather the object extends a
certain Class.

Any help is very much appreciated.

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Chris Uppal - 24 Nov 2005 11:20 GMT

> I know that I can find out an object's classname with
> getClass().getName()
>
> However, I do not know how to find out weather the object extends a
> certain Class.

Look up the keyword/operator:

instanceof

(with that exact case and spelling).

-- chris

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J. Verdrengh - 24 Nov 2005 11:20 GMT

> However, I do not know how to find out weather the object extends a
> certain Class.

You're expressing yourself incorrectly but I suppose you want this:
if(object instanceof Class){...}

> Any help is very much appreciated.

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Robert Klemme - 24 Nov 2005 12:34 GMT

>> However, I do not know how to find out weather the object extends a
>> certain Class.
> You're expressing yourself incorrectly but I suppose you want this:
> if(object instanceof Class){...}

For dynamic solutions see
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Class.html#isInstance(java.lan
g.Object)

robert

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Roedy Green - 24 Nov 2005 12:35 GMT

>However, I do not know how to find out weather the object extends a
>certain Class.

see instanceof operator

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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finding out weather an object extends a certain class

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