Java基础项目

Animal类

import java.time.LocalDate;

public class Customer {
    private String name;
    private int visitCount;
    private LocalDate latestVisitDate;

    public Customer(String name, int visitCount, LocalDate latestVisitDate) {
        this.name = name;
        this.visitCount = visitCount;
        this.latestVisitDate = latestVisitDate;
    }

    @Override
    public String toString() {
        return "顾客 [name=" + name + ", visitCount=" + visitCount + ", latestVisitDate=" + latestVisitDate + "]";
    }
}

AnimalNotFoundException

import java.time.LocalDate;

public class Customer {
    private String name;
    private int visitCount;
    private LocalDate latestVisitDate;

    public Customer(String name, int visitCount, LocalDate latestVisitDate) {
        this.name = name;
        this.visitCount = visitCount;
        this.latestVisitDate = latestVisitDate;
    }

    @Override
    public String toString() {
        return "顾客 [name=" + name + ", visitCount=" + visitCount + ", latestVisitDate=" + latestVisitDate + "]";
    }
}

AnimalShop

import java.time.LocalDate;

public interface AnimalShop {
    void buyAnimal(Animal animal) throws InsufficientBalanceException;
    void serveCustomer(Customer customer);
    void closeShop(LocalDate date);
}

Cat

public class Cat extends Animal {
    public Cat(String name, int age, String gender) {
        super(name, age, gender, 200.0);
    }

    @Override
    public String toString() {
        return "猫猫 [name=" + name + ", age=" + age + ", gender=" + gender + ", price=" + price + "]";
    }
}

ChineseRualDog

public class ChineseRuralDog extends Animal {
    private boolean isVaccineInjected;

    public ChineseRuralDog(String name, int age, String gender, boolean isVaccineInjected) {
        super(name, age, gender, 100.0); // 价格100元
        this.isVaccineInjected = isVaccineInjected;
    }

    @Override
    public String toString() {
        return "中华田园犬 [name=" + name + ", age=" + age + ", gender=" + gender +
                ", isVaccineInjected=" + isVaccineInjected + ", price=" + price + "]";
    }
}

Customer

import java.time.LocalDate;

public class Customer {
    private String name;
    private int visitCount;
    private LocalDate latestVisitDate;

    public Customer(String name, int visitCount, LocalDate latestVisitDate) {
        this.name = name;
        this.visitCount = visitCount;
        this.latestVisitDate = latestVisitDate;
    }

    @Override
    public String toString() {
        return "顾客 [name=" + name + ", visitCount=" + visitCount + ", latestVisitDate=" + latestVisitDate + "]";
    }
}

InsufficientBalanceException

public class InsufficientBalanceException extends Exception{
    public InsufficientBalanceException(String message){
        super(message);
    }
}

MyAnimalShop

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.List;

public class MyAnimalShop implements AnimalShop {
    private double balance;
    private List<Animal> animalList;
    private List<Customer> customerList;
    private boolean isOpen;

    public MyAnimalShop(double initialBalance) {
        this.balance = initialBalance;
        this.animalList = new ArrayList<>();
        this.customerList = new ArrayList<>();
        this.isOpen = true;
    }

    @Override
    public void buyAnimal(Animal animal) throws InsufficientBalanceException {
        if (!isOpen) {
            throw new IllegalStateException("商店已歇业！");
        }
        if (balance < animal.price) {
            throw new InsufficientBalanceException("余额不足，无法购买此动物！");
        }
        animalList.add(animal);
        balance -= animal.price;
    }

    @Override
    public void serveCustomer(Customer customer) {
        if (!isOpen) {
            throw new IllegalStateException("商店已歇业！");
        }
        customerList.add(customer);

        if (animalList.isEmpty()) {
            throw new AnimalNotFoundException("店内没有动物可供购买！");
        }
        Animal animal = animalList.remove(0); // 出售第一只动物
        balance += animal.price;
    }

    @Override
    public void closeShop(LocalDate date) {
        if (!isOpen) {
            throw new IllegalStateException("商店已歇业！");
        }
        isOpen = false;
        System.out.println("店内客户信息:");
        for (Customer customer : customerList) {
            System.out.println(customer);
        }
        System.out.println("今天的利润是: " + balance);
        customerList.clear(); // 清空客户列表
    }
}

Rabbit

public class Rabbit extends Animal {
    public Rabbit(String name, int age, String gender) {
        super(name, age, gender, 150.0);
    }

    @Override
    public String toString() {
        return "兔子 [name=" + name + ", age=" + age + ", gender=" + gender + ", price=" + price + "]";
    }

}

Test

import java.time.LocalDate;

public class Test {
    public static void main(String[] args) {
        try {
            MyAnimalShop shop = new MyAnimalShop(500.0);

            // 买入动物
            shop.buyAnimal(new ChineseRuralDog("旺财", 3, "男", true));
            shop.buyAnimal(new Cat("喵喵", 2, "女"));
            shop.buyAnimal(new Rabbit("小兔", 1, "中"));

            // 招待客户
            shop.serveCustomer(new Customer("张三", 1, LocalDate.now()));
            shop.serveCustomer(new Customer("李四", 2, LocalDate.now()));

            // 关闭商店
            shop.closeShop(LocalDate.now());

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}