🚀 go-pugleaf

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I'd try first spreading that out a bit

Class c = Class.forName("classname");
Inteface i = (Interface) c.newInstance();

Make sure that you have a public no-arg constructor, otherwise this will not
work and you will have to locate the parameters for the constructor and
other nasty sorts of things


Steve Grant wrote:

> I'd like to be able to build a JTree using models that are loaded by
> passing the model name.  The basic idea is to instantiate an instance
> variable of the interface that all the models implement in a separate
> class, and then use the interface methods to build the tree without ever
> knowing in advance which tree will be built. My problem is that I can't
> seem to use the (interface)Class.forname("classname").newInstance() and
> get anything other than null. The other complication is that the models
> take parameters but I think I could handle this with a separate
> interface function as opposed to through a constructor. My thought was
> that if I have trees which can take variable models it would good
> practice to make those trees pluggable. I would appreciate any help on
> how to use the forname/instanceof construction or if I 've got something
> wrong in how I'm conceving this. Thanks.

--
****************************************************************
David J. Graff                               IQXPERT
mailto:david.graff@iqxpert.com               Phone: (770) 953-1464
Direct: (770) 240-2289                       Fax: (770) 953-1574
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