JavaSE——ArrayList集合练习

package com.zhao.test2;

public class Phone {
    private String logo;
    private Integer price;


    public Phone() {
    }

    public Phone(String logo, Integer price) {
        this.logo = logo;
        this.price = price;
    }

    /**
     * 获取
     * @return logo
     */
    public String getLogo() {
        return logo;
    }

    /**
     * 设置
     * @param logo
     */
    public void setLogo(String logo) {
        this.logo = logo;
    }

    /**
     * 获取
     * @return price
     */
    public Integer getPrice() {
        return price;
    }

    /**
     * 设置
     * @param price
     */
    public void setPrice(Integer price) {
        this.price = price;
    }

    public String toString() {
        return "Phone{logo = " + logo + ", price = " + price + "}";
    }
}

package com.zhao.test2;

import java.util.ArrayList;

public class PhoneTest {
    public static void main(String[] args) {
        ArrayList<Phone> arrayList=new ArrayList<>();

        Phone p1=new Phone("小米",1999);
        Phone p2=new Phone("三星",2999);
        Phone p3=new Phone("华为",3999);

        arrayList.add(p1);
        arrayList.add(p2);
        arrayList.add(p3);

        ArrayList<Phone> newArrayList=getCheapPhone(arrayList);
        for (int i = 0; i < newArrayList.size(); i++) {
            Phone phone=newArrayList.get(i);
            System.out.println(phone.getLogo()+" "+phone.getPrice());
        }

    }
    //写一个方法将价格低于三千的手机信息返回
    public static ArrayList<Phone> getCheapPhone(ArrayList<Phone> arrayList){
        ArrayList<Phone> newArrayList=new ArrayList<>();
        for (int i = 0; i < arrayList.size(); i++) {
            Phone phone=arrayList.get(i);
            int price=phone.getPrice();
            if (price<3000){
                newArrayList.add(phone);
            }
        }
        return newArrayList;
    }
}