如今即将上大二的我，回头做了一下大一上半学期的宠物商店的一个小项目，那时候刚接触java就被要求做个这东西出来，当时做了真的特别久。现在做起来觉得自己进步不少，挺简单的。废话不多说，直接上代码，嘿嘿。
整个程序主要用到ArrayList集合，对ArrayList进行增删查改。
1.先写一个属性类
package com.animalShop;
public class property {
private String name;
private String kind;
private int age;
private double price;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getKind() {
return kind;
}
public void setKind(String kind) {
this.kind = kind;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public property(String name, String kind, int age, double price) {
this.name = name;
this.kind = kind;
this.age = age;
this.price = price;
}
@Override
public String toString() {
return name + "\t" + kind + "\t" + age + "\t" + price;
}
}2.再写一个商店类
package com.animalShop;
import java.util.ArrayList;
import java.util.Scanner;
public class shop {
//商店品种集合
ArrayList<property> amlList = new ArrayList<>();
//购物车集合
ArrayList<property> stoCarList = new ArrayList<>();
//添加宠物到商店的方法
public void addAml() {
System.out.println("请输入添加的宠物信息(名字->种类->年龄->价格):");
//创建对象animal属性,键入animal
property pty = new property(getString(), getString(), getInt(), getDouble());
//判断是否添加到amlList集合里面
boolean bool = amlList.add(pty);
if (bool == true) {
System.out.println("添加成功!");
} else {
System.out.println("添加失败!");
}
}
//显示宠物商店宠物方法
public void showAml() {
boolean bool = amlList.isEmpty();
if (bool != true) {
System.out.println("序号" + "\t" + "名字" + "\t" + "种类" + "\t" + "年龄" + "\t" + "价格");
//定义一个序号
int n = 1;
//遍历出宠物商店宠物
for (property property : amlList) {
System.out.println(n + "\t" + property);
n++;
}
System.out.println(" ");
} else {
System.out.println("商店维护中，暂时没有商品哦！");
System.out.println(" ");
}
}
//购买宠物到购物车的方法
public void buyAml() {
boolean bool = amlList.isEmpty();
if (bool != true) {
System.out.print("请输入您想要购买的宠物的序号:");
//键入购买宠物的序号
int n = getInt();
//防止下标越界
if (n <= amlList.size()) {
stoCarList.add(amlList.get((n - 1)));
amlList.remove((n - 1));
System.out.println("购买成功！");
System.out.println(" ");
} else {
System.out.println("购买失败！");
System.out.println("您想要的宠物不存在，请核实商店现有的宠物！");
System.out.println(" ");
}
} else {
System.out.println("商店维护中，暂时没有商品可以购买哦！");
System.out.println(" ");
}
}
//查看购物车方法
public void showShopCar() {
boolean bool = stoCarList.isEmpty();
if (bool != true) {
System.out.println("-------购物车-------");
System.out.println("序号" + "\t" + "名字" + "\t" + "种类" + "\t" + "年龄" + "\t" + "价格");
shopList();
System.out.println(" ");
} else {
System.out.println("您还没有购买过宠物呢！");
System.out.println(" ");
}
}
//购物车结算方法
public void totalPrice() {
boolean bool =stoCarList.isEmpty();
if (bool != true) {
System.out.println("-------清单-------");
System.out.println("序号" + "名字" + "\t" + "种类" + "\t" + "年龄" + "\t" + "价格" + "\t");
shopList();
//清空购物车
stoCarList.clear();
//判断购物车是否为空
if (stoCarList.isEmpty()) {
System.out.println("结算成功！");
System.out.println(" ");
} else {
System.out.println("结算失败！");
System.out.println(" ");
}
}else {
System.out.println("购物车没有任何宠物哦，请先购买再结算！");
System.out.println(" ");
}
}
//删除购物车某一个宠物方法
public void delStoreCar() {
boolean bool = stoCarList.isEmpty();
if (bool != true) {
System.out.print("请输入购物车中要删除的宠物序号：");
int n = getInt();
//防止下标越界
if ((n - 1) <= stoCarList.size()) {
stoCarList.remove((n - 1));
System.out.println("删除成功!");
System.out.println(" ");
} else {
System.out.println("删除失败！");
System.out.println("请检查购物车宠物是否存在!");
System.out.println(" ");
}
} else {
System.out.println("您还没有购买过宠物，无需删除！");
System.out.println(" ");
}
}
//删除商店某一个宠物
public void delAmlList() {
boolean bool = amlList.isEmpty();
if (bool != true) {
System.out.print("请输入商店中要删除的宠物序号：");
int n = getInt();
//防止下标越界
if ((n - 1) <= amlList.size()) {
amlList.remove((n - 1));
System.out.println("删除成功!");
System.out.println(" ");
} else {
System.out.println("删除失败!");
System.out.println("请检查商店宠物是否存在!");
System.out.println(" ");
}
} else {
System.out.println("商城还未上架过任何宠物！");
System.out.println(" ");
}
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
shop shop = new shop();
while (true) {
System.out.println("--------欢" + "\t" + "迎" + "\t" + "来" + "\t" + "到" +
"\t" + "上" + "\t" + "天" + "\t" + "的" + "\t" + "小" + "\t" + "宝" + "\t" + "贝" + "\t" + "儿" +
"\t" + "宠" + "\t" + "物" + "\t" + "商" + "\t" + "店--------");
System.out.println("请输入序号(1：上架宠物 2：下架宠物 3：打开商城 4：购买 5：打开购物车 6：删除购物车宠物 7：结算 8：离开)");
switch (sc.nextInt()) {
case 1:
shop.addAml();
break;
case 2:
shop.delAmlList();
break;
case 3:
shop.showAml();
break;
case 4:
shop.buyAml();
break;
case 5:
shop.showShopCar();
break;
case 6:
shop.delStoreCar();
break;
case 7:
shop.totalPrice();
break;
case 8:
System.out.println("再见！");
return;
}
}
}
//封装购物清单方法，提高代码的复用性
public void shopList() {
double total = 0;
//序号计数器
int n = 1;
//遍历购物车
for (int i = 0; i < stoCarList.size(); i++) {
System.out.println(n + "\t" + stoCarList.get(i));
property price = stoCarList.get(i);
total += price.getPrice();
n++;
}
System.out.println("总价：" + "\t" + "\t" + "\t" + total);
}
/*
* 这里没有创建一个对象键入，是因为创建一个对象，在键入数据时，会因为对象数据类型冲突，导致InputMismatchException异常
* */
public static String getString() {
Scanner a = new Scanner(System.in);
return a.next();
}
public static int getInt() {
Scanner b = new Scanner(System.in);
return b.nextInt();
}
public static double getDouble() {
Scanner c = new Scanner(System.in);
return c.nextDouble();
}
}
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