java.util.RandomAccessSubList cannot be cast to java.util.ArrayList解决办法

public class subListTest {

    public static void main(String[] args){

        ArrayList list = new ArrayList();      

        list.add(1);

        list.add(2);

        list.add(3);

        list.add(4);

        list.add(5);       

        List listsub = list.subList(0, 3);

        System.out.println(listsub);

    }

}

public List<E> subList(int fromIndex,int toIndex) {

        return (this instanceof RandomAccess ?

                new RandomAccessSubList<E>(this, fromIndex, toIndex) :

                new SubList<E>(this, fromIndex, toIndex));

    }