Problema com ServletContext e uma Listener

import javax.servlet.*;
public class MeuListener implements ServletContextListener {
    Object Prod01=new Object();
    int Prod02=3;
    int Prod03=3;
    int Prod04=3;
 
    /** Creates a new instance of MeuListener */
    public MeuListener() {
    }

    public void contextInitialized(ServletContextEvent sce) 
    {
    ServletContext sc=sce.getServletContext();    
   sc.setAttribute("Prod01",Prod01);
   // sc.setAttribute("Prod02",Prod02);
    
    
    
    }

    public void contextDestroyed(ServletContextEvent sce) {
    }
    
}