ArrayList遍历的4种方法

//ArrayList遍历的4种方法


package com.test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ArrayListDemo {
        public staticvoid 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));
                }
        }
}