import java.util.ArrayList;
import java.util.List;
interface chewable {}
class Gum implements chewable {}
public class Tester {
public static void main(String[] args) {
List<Gum> list1 = new ArrayList<Gum>();
list1.add(new Gum());
List list2 = list1;
list2.add(new Integer(9));
System.out.println(list2.size());
}
}
