[java-dev] Strange NoClassDefFoundError when inside MaxClock

hey adam.
definitely seems to be some sort of strange classloader interaction.  
is org/jruby/runtime/callback in your
jruby classpath??

regardless, i would probably do file watcher with a java thread too.

t


On Apr 8, 2008, at 22:43 PM, Adam Murray wrote:

>
> I'm getting a NoClassDefFoundError when I try to run some code from  
> a MaxClock. This code can be executed repeatedly outside of a  
> MaxClock with no problems. How is that possible?
>
> I'm interacting with JRuby here, so it may be a bad interaction  
> with JRuby's ClassLoader. I'm trying to implement a file autowatch  
> mechanism for ruby scripts in my max ruby object. I gave up on the  
> MaxClock approach and implemented the file watcher in a Java  
> Thread, which is probably a more appropriate solution. That seems  
> to work fine so far.
>
> Anyway, thought this was pretty weird! Maybe if anyone else is  
> having issues with MaxClock you should just switch to using  
> standard Java Threads.
>
> The class in question is definitely on Max's classpath.
>
> java.lang.NoClassDefFoundError: org/jruby/runtime/callback/ 
> FastInvocationCallback
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
> at org.jruby.util.JRubyClassLoader.defineClass 
> (JRubyClassLoader.java:25)
> ...<snip>...
> sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at com.cycling74.max.Callback.execute(Callback.java:300)
> at com.cycling74.max.MaxClock.tick(MaxClock.java:149)
>
>
> --
> Adam Murray
> compusition.com
> _______________________________________________
> java-dev mailing list
> java-dev at cycling74.com
> http://www.cycling74.com/mailman/listinfo/java-dev