problems with subclass

["Marcelo D. Ré" <mdre at rectorado dot unl dot edu dot ar>]

Hi all!

   I'm trying to subclass a Java class but it doesn't  work correctly.  
What i'm doing si like this:

Java class:

public abstrac AntQueen {
   ...
  
   public void move(){
   }

}



   I need to extend this class to write de move, but in scheme. I do this:

(define-simple-class <FunctionalAntQueen> (<engine.AntQueen>)
 ((*init*)
  (display "hola")
 )
 )
  
   and compile it with:

   $ java -cp . kawa.repl -P colony. -C 
../../src/colony/FunctionalAntQueen.scm

   In that state, when I try to load it from java:

  
   try {

           //ContestEngine ce = new ContestEngine();
           Object preAnt = 
Class.forName("colony.FunctionalAntQueen").newInstance();
        
           //TestAQ aq = new TestAQ();
           if (preAnt instanceof AntQueen) {
               System.out.println("SIIII!");
               ((AntQueen)preAnt).move();
           }
           else
               System.out.println("NOOOO!!!");

      .... 
      ....


   it trow:

Exception in thread "main" java.lang.NoSuchFieldError: Lit0
       at colony.FunctionalAntQueen.<init>(FunctionalAntQueen.scm:8)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
Method)
       at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
       at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
       at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
       at java.lang.Class.newInstance0(Class.java:355)
       at java.lang.Class.newInstance(Class.java:308)
       at pruebas.Main.main(Main.java:46)
Java Result: 1


   If the constructor do not have any call (without the display line) 
it work, but any change throw an exeption.

   What I do wrong?

   Thank

         Marcelo