List的三种遍历法（望各路神仙给菜鸟我 指点指点）

package collection;

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

public class MyList {
    /**
     * @param args
     */
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("aa");
        list.add("bb");
        list.add("cc");
        list.add("dd");

        //List的第一种遍历法
        for (String str : list) {
            System.out.print(str + " ");
        }
        System.out.println();

        //List的第二种遍历法
        for (int i = 0; i < list.size(); i++) {
            if (i != list.size() - 1) {
                System.out.print(list.get(i) + " ");
                list.remove(i);
            } else {
                System.out.print(list.get(i));
            }
        }

        //List的第三种遍历法
        System.out.println();
        for (Iterator<String> iterator = list.iterator(); iterator.hasNext();) {
            if (iterator.hasNext()) {
                System.out.print(iterator.next() + " ");
            } else {
                System.out.print(iterator.next());
            }
        }
    }
}