16-7，List

package cn.itcast.p4.list.demo;import java.util.ArrayList;import java.util.List;public class ListDemo {/** * @param args */public static void main(String[] args) {List list = new ArrayList();show(list);}public static void show(List list) {//添加元素list.add("abc1");list.add("abc2");list.add("abc3");System.out.println(list);//插入元素。//list.add(1,"abc9");//删除元素。//System.out.println("remove:"+list.remove(2));//修改元素。//System.out.println("set:"+list.set(1, "abc8"));//获取元素。//System.out.println("get:"+list.get(0));//获取子列表。//System.out.println("sublist:"+list.subList(1, 2));System.out.println(list);}}