在不同的方法(相同的类)上访问ArrayList

public class MyClass {
    private ArrayList<String> myList = new ArrayList<>();

    public void addElement(String element) {
        myList.add(element);
    }

    public void removeElement(String element) {
        myList.remove(element);
    }

    public void printElements() {
        for (String element : myList) {
            System.out.println(element);
        }
    }
}

public class MyClass {
    public void addElement(ArrayList<String> list, String element) {
        list.add(element);
    }

    public void removeElement(ArrayList<String> list, String element) {
        list.remove(element);
    }

    public void printElements(ArrayList<String> list) {
        for (String element : list) {
            System.out.println(element);
        }
    }
}

public class MyClass {
    public ArrayList<String> createList() {
        ArrayList<String> list = new ArrayList<>();
        list.add("Element 1");
        list.add("Element 2");
        list.add("Element 3");
        return list;
    }

    public void printElements(ArrayList<String> list) {
        for (String element : list) {
            System.out.println(element);
        }
    }
}