Re: [mdr-users] java.lang.ClassCastException in example using MDR

This usually happens when you have a jar with the JMI interfaces for the 
projects metamodel on the classpath but this jar file is not accessible 
from the MDR classloader. How do you run the example? (have you packaged 
the JMI interfaces as a NB module and installed it into NetBeans?)
Martin

Céline Le Jeune wrote:

> Hi!
>  
> I'm trying to execute the Example using MDR but I cannot solve my 
> problem: when I compile it's fine but when I execute, I've got the 
> following:
>  
> java.lang.ClassCastException
>         at 
> org.netbeans.mdrdemo.ProjectCreationDemo.main(ProjectCreationDemo.java:20)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:324)
>         at 
> org.openide.execution.ThreadExecutor.executeClass(ThreadExecutor.java:116)
>         at 
> org.openide.execution.ThreadExecutor$TERunnable.run(ThreadExecutor.java:183)
>         at 
> org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:118)
>  
> I did everything as showed in the example and try to fix the problem 
> with the older reported bug answers but it's still bugging;
>  
> I've printed that too:
> System.out.println("cast type "+repository.getExtent("Projects 
> metadata").getClass().getName());
> which display :
> cast type org.netbeans.jmi.projects.ProjectsPackage$Impl
> what is $Impl  ?
>  
>  
> If anybody can help me...
> Thanks by advance
>  
> C.
>  
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