Excuse me,can you help me?

[qiangzhen]

hi to all,
  i meet a problem in java(jdk1.2.2,swarm-2.1.1,win98) now.If you can,please 
help me.Thank you very much.
 
  when I use the function like this:
ActionForEach actionForEach;
 Selector sel =
          new Selector (Class.forName ("AkerlofCar"), "step", false);
 actionForEach =
         modelActions.createActionForEach$message (CarsList, sel);
//step () is one method which belongs to the Class AkerlofCar

 when i compile it , it is right. but when i run it, it will tell me:Could not 
find Java method 'step'.
i really don't know how i should do to deal with it. i really appreciate your 
help.        

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