package ArrayListDemo;

import java.util.ArrayList;

public class ArrayListDemo7 {
    public static void main(String[] args) {
        //1.创建集合对象
        ArrayList<Phone> list  = new ArrayList<Phone>();
        //2.创建手机对象
        Phone ph1 = new Phone("小米",1000);
        Phone ph2 = new Phone("苹果",8000);
        Phone ph3 = new Phone("锤子",2999);
        Phone ph4 = new Phone("鸭梨",1999);

        //3.添加数据
        list.add(ph1);
        list.add(ph2);
        list.add(ph3);
        ArrayList<Phone> phoneInfo = getPhoneInfo(list);
        phoneInfo.add(ph4);
        for (int i = 0; i < phoneInfo.size(); i++) {
            Phone phone = phoneInfo.get(i);
            System.out.println(phone.getPinpai()+","+phone.getJiage());
        }

    }
    //技巧：
    //如果我们要返回多个数据，可以把这些数据先放到一个容器当中，再把容器返回
    //集合，数组
    public static ArrayList<Phone> getPhoneInfo(ArrayList<Phone> list){
        //定义一个集合，用于存储价格低于三千的对象
        ArrayList<Phone> resultList = new ArrayList<Phone>();
        for (int i = 0; i < list.size(); i++) {
            Phone p = list.get(i);
            int jiage = p.getJiage();
            //如果当前手机的设备低于3000，那么就把手机对象添加到resultList中
            if(jiage < 3000){
                resultList.add(p);
            }
        }
        return resultList;
    }
}