public class OwnGeneric<E>
private List<E> list;
public OwnGeneric () {
list = new ArrayList<E>();
}
public void add (E e) {
list.add(e);
}
public void remove (int i) {
list.remove(i);
}
public E get(int i) {
return list.get (i);
}
public int size() {
return list.size();
}
public boolean isEmpty () {
return list.size() == 0;
}
public String toString(){
StringBuilder sb = new Stringbuilder();
int size = size();
for (int i = 0; i < size; i++) {
sb.append (get(i) +(i != size -1 ? "-" : ""));
}
return sb.toString();
}
}

ed il toString() ?