java 遍历arrayList常用的四种方法

package com.test;

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<String>();

list.add("luojiahui");

list.add("luojiafeng");

//方法1

Iterator it1 = list.iterator();

while(it1.hasNext()){

System.out.println(it1.next());

}

//方法2

for(Iterator it2 = list.iterator();it2.hasNext();){

System.out.println(it2.next());

}

//方法3

for(String tmp:list){

System.out.println(tmp);

}

//方法4

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

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

}

}

}