list四种遍历

list的四种遍历方式，遍历list集合

list 遍历元素 
http://blog.youkuaiyun.com/sunrainamazing/article/details/71577662

set遍历元素 
http://blog.youkuaiyun.com/sunrainamazing/article/details/71577893

map遍历元素 
http://blog.youkuaiyun.com/sunrainamazing/article/details/71580051

package sun.rain.amazing.traversal;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

/**
 * Created by sunRainAmazing on SUN_RAIN_AMAZING
 * @author sunRainAmazing
 */
public class TraversalList {
    //http://www.cnblogs.com/interdrp/p/3663602.html
    public static void main(String args[]){

        List<String> list = new ArrayList<String>(
            Arrays.asList("tom","cat","Jane","jerry"));



        //方法1 集合类的通用遍历方式, 从很早的版本就有, 用迭代器迭代
        Iterator it1 = list.iterator();
        while(it1.hasNext()){
            System.out.println(it1.next());
        }



        //方法2 集合类的通用遍历方式, 从很早的版本就有, 用迭代器迭代
        for(Iterator it2 = list.iterator();it2.hasNext();){
            System.out.println(it2.next());
        }



        //方法3 增强型for循环遍历
        for(String value:list){
            System.out.println(value);
        }



        //方法4 一般型for循环遍历
        for(int i = 0;i < list.size(); i ++){
            System.out.println(list.get(i));
        }



    }


}