Java学习-第20天-集合

package GaoJiTexing.list;

import java.util.ArrayList;

public class ArrayListTest {
    public static void main(String[] args) {

        ArrayList list=new ArrayList();
        //增加元素
        list.add("张三");
        list.add("李四");
        list.add("王五");
        String name1=(String)list.get(0);
        String name2=(String)list.get(1);
        String name3=(String)list.get(2);
        System.out.println(name1);
        System.out.println(name2);
        System.out.println(name3);
        System.out.println("==========");
        for (int i=0;i<list.size();i++){
            System.out.println(list.get(i));
        }
        System.out.println("==========");
        for(Object obj:list){
            String temp=(String)obj;
            System.out.println(temp);
        }
        
    }
}