如何在类中存储Arraylist？

import java.util.ArrayList;

public class MyClass {
    private ArrayList<String> myList;

    public MyClass() {
        myList = new ArrayList<>();
    }

    public void addItem(String item) {
        myList.add(item);
    }

    public String getItem(int index) {
        return myList.get(index);
    }
}

using System.Collections.Generic;

public class MyClass {
    private List<string> myList;

    public MyClass() {
        myList = new List<string>();
    }

    public void AddItem(string item) {
        myList.Add(item);
    }

    public string GetItem(int index) {
        return myList[index];
    }
}

class MyClass:
    def __init__(self):
        self.my_list = []

    def add_item(self, item):
        self.my_list.append(item)

    def get_item(self, index):
        return self.my_list[index]

class MyClass {
    constructor() {
        this.myList = [];
    }

    addItem(item) {
        this.myList.push(item);
    }

    getItem(index) {
        return this.myList[index];
    }
}