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

public class IteratorDemo {
     public static void main(String[] args) {
            List<Integer> list = new ArrayList<Integer>();// 創(chuàng)建列表
            for (int i = 0; i < 10; i++) {// 向列表中增加10個(gè)元素
                list.add(i);
            }
            Iterator it = list.iterator();
            System.out.print("ArrayList集合中的元素為：");
            while(it.hasNext()){
                System.out.print(it.next()+" ");
            }     
            System.out.println();
            System.out.println("逆序后為：");
            ListIterator<Integer> li = list.listIterator();// 獲得ListIterator對(duì)象
            for (li = list.listIterator(); li.hasNext();) {// 將游標(biāo)定位到列表結(jié)尾
                li.next();
            }
            for (; li.hasPrevious();) {// 逆序輸出列表中的元素
                System.out.print(li.previous() + " ");
            }
        }
}