SimpleList<String> sList = new SimpleList<>();

sList.addFirst("Jeovane");
sList.addFirst("Mario");
sList.addLast("Pedro");
sList.addLast("Eduardo");

System.out.println("Remove o 1o.: " + sList.removeFirst());
System.out.println("Remove o último: " + sList.removeLast());

System.out.println("\n" + sList);