public class ListTest {
    public static void main(String[] args) {
        LinkedList<Integer> list = new LinkedList<Integer>();
        System.out.println(list);
        list.add(23);
        System.out.println(list);
        list.add(42);
        System.out.println(list);
        list.add(-3);
        System.out.println(list);
        list.add(1,17);
        System.out.println(list);
        list.remove(1);
        System.out.println(list);
    }
}