import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

public class ArrayListDemo {

public static void main(String[] args) {

List<String> list = new ArrayList<>();

list.add("Hello");

list.add("World");

list.add("Haha");

//第一种遍历方法使用foreach遍历List

for (int i = 0; i < list.size(); i++) {

System.out.println(list.get(i));

}

for (String str :

list) {

System.out.println(str);

}

//第二种遍历，把链表变为数组相关的内容进行遍历

String[] strArray = new String[list.size()];

list.toArray(strArray);

for (int i = 0; i < strArray.length; i++) {

System.out.println(strArray[i]);

}

for (String str :

strArray) {

System.out.println(str);

}

//第三种遍历 使用迭代器进行相关遍历

Iterator<String> iterator = list.iterator();

while (iterator.hasNext()) {

System.out.println(iterator.next());

}

System.out.println("---------------");

}

}