W3School TIY Editor

import java.util.ArrayList; import java.util.Iterator; public class Main { public static void main(String[] args) { // 创建集合 ArrayList<String> cars = new ArrayList<String>(); cars.add("Volvo"); cars.add("BMW"); cars.add("Ford"); cars.add("Tesla"); // 获取迭代器 Iterator<String> it = cars.iterator(); // 遍历集合 while(it.hasNext()) { System.out.println(it.next()); } } }