Java做一个简单的宠物商店，实现添加，购买，结算等功能

落日映苍穹つ 2021-11-22 04:10 396阅读 0赞

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();
        }
    
    }