Collection遍历输出

package basic;import java.util.ArrayList;import java.util.Iterator;import java.util.List;/** * Created by zhangdehua on 2016/12/21. */public class CollectionIt {    public static void main(String [] args){        List<String> l = new ArrayList<String>();        l.add("today");        l.add("is");        l.add("a");        l.add("luckyday");        for(int i = 0;i <l.size();i ++){            System.out.print(l.get(i) + " ");        }        Iterator  it = l.iterator();        while (it.hasNext()){            System.out.print(it.next() + " ");        }    }}