import java.util.*;
class OntoParamGroup extends OntoParam{
     Vector childgroups=new Vector();
     Vector parameters=new Vector(); //Integer vector
     public OntoParamGroup(String ugroupname, 
                      double ugroupcoef, OntoParamGroup uparent){
            super(ugroupname, ugroupcoef, uparent);
     }
     
     void addParameter(OntoParam param){
        if(parameters.contains(param)){
//           throw new RuntimeException("Parameter "+param+" allready in group");
            System.out.println("Same group");
        }
        addParameter(param, parameters.size());
     }
     
     void addParameter(OntoParam param, int index){
        if(param instanceof OntoParamGroup){
           addChildGroup((OntoParamGroup)param);
        } else {
        if(param.parent==this){
           if(index>parameters.indexOf(param)){
              index=index-1;
           }
        }
        param.parent.parameters.remove(param);
        param.parent=this;
        if(index>parameters.size()){index=parameters.size();}
        if(index<0){index=0;}
        parameters.add(index, param);
        
        }
     }
     
     void addChildGroup(OntoParamGroup group){
        if(group.parent==null){
          return; //root group	
        }
        if(group.parent!=null){
           group.parent.childgroups.remove(group);
        }
        group.parent=this;
        childgroups.add(group);
     }
     
     OntoParam getParameter(int index){
        return (OntoParam)parameters.get(index);
     }
     boolean isEmpty(){
        return parameters.size()==0 && childgroups.size()==0;
     }
}