List的三种遍历方式

package test;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
public class ListFor {
    @SuppressWarnings({"all"})
    public static void main(String[] args) {
        //List 接口的实现子类 Vector LinkedList
        //List list = new ArrayList();
        //List list = new Vector();
        List list = new LinkedList();
        list.add("jack");
        list.add("tom");
        list.add("鱼香肉丝");
        list.add("北京烤鸭子");
        //遍历
        System.out.println("=====迭代器=====");
        //1. 迭代器
        Iterator iterator = list.iterator();
        while (iterator.hasNext()) {
            Object obj =  iterator.next();
            System.out.println(obj);
        }
        System.out.println("=====增强for=====");
        //2. 增强for
        for (Object o : list) {
            System.out.println("o=" + o);
        }
        System.out.println("=====普通for====");
        //3. 使用普通for
        for (int i = 0; i < list.size(); i++) {
            System.out.println("对象=" + list.get(i));
        }
    }
}