Александр Опарин

<a th:href="@{/users/setdriver/{id}(id=${user.id})}" sec:authorize="!hasRole('DRIVER')">Сделать водителем</a>

final int random_number = 1 + (int) (Math.random() * 100);

Set<String> once = new HashSet<>();
Set<String> duplicates = new HashSet<>();
list.stream().forEach(s -> {
            if (!duplicates.contains(s)) {
                if (once.contains(s)) {
                    once.remove(s);
                    duplicates.add(s);
                } else {
                    once.add(s);
                }
            }
});

return new MyModel() {{
           myField = view.myField;
        }};

MyModel myModel = new MyModel();
myModel.myField = view.myField;
return myModel;

public static class Integer implements MyRandom <java.lang.Integer> {
        private Random rand = new Random();

        public java.lang.Integer GetRandom() {
            return rand.nextInt(10);
        }
    }

List<String> list1 = new ArrayList<>();
List<String> list2 = new ArrayList<>();
list1.add("1");
list1.add("2");
list1.add("3");

list2.add("3");
list2.add("4");
list2.add("5");

list1.removeAll(list2);