main() {
    Structimplementationklasse a = new Structimplementationklasse( new Struc() );
    while( a.hasNext() ) {
        a.getNext();
    }
}

public class Structimplementationklasse implements Seq {

    Structimplementationklasse( Struc struc ) {
        this.struc = struc;
    }


    int i = 0;

    Struc struc;

    boolean hasNext(){
        if (i < struc.size()) return true;
        return false;
    }

    int getNext(){
        try{
            return ( struc.get(i++) );
        }
        catch ( EmptyException e ){ return 0;}

    }


}

public class Adapter {
    Adapter( Seq seq ) {
        m_seq = seq;
    }
    Seq m_seq;
    boolean hasNext() {
        return seq.hasNext();
    }
    int getNext() {
        return seq.getNext();
    }
}