[已解决]输入缓冲区问题

小甲鱼的二师兄 · 发表于 2025-3-19 19:59:14

1. Animal.java

public class Animal {
private String name;
private String species;
private int age;
public Animal(String name, String species, int age) {
this.name = name;
this.species = species;
this.age = age;
}
// Getters and setters
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSpecies() {
return species;
}
public void setSpecies(String species) {
this.species = species;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
// Display animal information
public void display() {
System.out.println("- " + name + " (" + species + ", " + age + " years old)");
}
}

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2. Item.java

public class Item {
private String name;
private String code;
private double price;
public Item(String name, String code) {
this.name = name;
this.code = code;
this.price = 0.0;
}
// Getters and setters
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
}

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3. Logistics.java

public class Logistics {
private Item vehicle;
private Item fuel;
private String[] caretakers;
public Logistics(Item vehicle, Item fuel, String[] caretakers) {
this.vehicle = vehicle;
this.fuel = fuel;
this.caretakers = caretakers;
}
// Display logistics information
public void display(String sourceZoo, String destinationZoo, Animal animal) {
System.out.println("\n----- LOGISTICS INFORMATION -----");
System.out.println("Moving: " + animal.getName() + " (" + animal.getSpecies() + ")");
System.out.println("From: " + sourceZoo);
System.out.println("To: " + destinationZoo);
System.out.println("Vehicle: " + vehicle.getName() + " (Code: " + vehicle.getCode() + ", Cost: RMB" + vehicle.getPrice() + ")");
System.out.println("Fuel: " + fuel.getName() + " (Code: " + fuel.getCode() + ", Cost: RMB" + fuel.getPrice() + ")");
System.out.println("Caretakers:");
for (int i = 0; i < caretakers.length; i++) {
System.out.println(" " + (i+1) + ". " + caretakers[i]);
}
double totalCost = vehicle.getPrice() + fuel.getPrice();
System.out.println("Total Transportation Cost: RMB" + totalCost);
System.out.println("----------------------------------");
}
}

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4. Zoo.java

public class Zoo {
private String name;
private Animal[] animals;
private int counter;
public Zoo(String name) {
this.name = name;
this.animals = new Animal[10];
this.counter = 0;
}
// Set and get name
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
// Set and get counter
public void setCounter(int counter) {
this.counter = counter;
}
public int getCounter() {
return counter;
}
// Add an animal to the zoo
public boolean addAnimal(Animal animal) {
if (counter < animals.length) {
animals[counter++] = animal;
return true;
} else {
System.out.println(name + " is full. Cannot add more animals.");
return false;
}
}
// Delete an animal from the zoo
public void deleteAnimal(String name) {
for (int i = 0; i < counter; i++) {
if (animals[i].getName().equals(name)) {
for (int j = i; j < counter - 1; j++) {
animals[j] = animals[j + 1];
}
animals[--counter] = null;
System.out.println("Animal '" + name + "' removed from " + this.name);
return;
}
}
System.out.println("Animal '" + name + "' not found.");
}
public int findAnimal(String name) {
for (int i = 0; i < counter; i++) {
if (animals[i].getName().equals(name)) {
return i; // Return the index if the animal is found
}
}
return -1; // Return -1 if the animal is not found
}
// Get animal by index
public Animal getAnimal(int index) {
if (index >= 0 && index < counter) {
return animals[index];
}
return null;
}
// Move an animal to another zoo
public void moveAnimal(String name, Zoo destination, Logistics logistics) {
int index = findAnimal(name);
if (index != -1) {
Animal animal = animals[index];
boolean added = destination.addAnimal(animal);
if (added) {
logistics.display(this.name, destination.getName(), animal);
System.out.println("Animal '" + name + "' added to " + destination.getName());
System.out.println("Animal '" + name + "' successfully moved from " + this.name + " to " + destination.getName());
deleteAnimal(name);
}
} else {
System.out.println("Animal '" + name + "' not found.");
}
}
// Display all animals
public void displayAnimals() {
System.out.println("\n--- Animals in " + name + " (" + counter + "/10) ---");
if (counter == 0) {
System.out.println("No animals in this zoo.");
} else {
for (int i = 0; i < counter; i++) {
animals[i].display();
}
}
System.out.println("---------------------------------------\n");
}
}

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5. ZooManagementSystem.java

import java.util.Scanner;
public class ZooManagementSystem {
public static void main(String[] args) {
// 创建用户输入的scanner
Scanner input = new Scanner(System.in);
// 创建两个动物园实例
Zoo southernZone = new Zoo("Southern-Zone Zoo");
Zoo northernZone = new Zoo("Northern-Zone Zoo");
// 向Southern-Zone Zoo添加5只动物
southernZone.addAnimal(new Animal("Simba", "African Lion", 6));
southernZone.addAnimal(new Animal("Dumbo", "African Elephant", 12));
southernZone.addAnimal(new Animal("Luna", "Gray Wolf", 4));
southernZone.addAnimal(new Animal("Poe", "Raven", 3));
southernZone.addAnimal(new Animal("Benny", "Grizzly Bear", 8));
// 向Northern-Zone Zoo添加5只动物
northernZone.addAnimal(new Animal("Arctic", "Polar Bear", 7));
northernZone.addAnimal(new Animal("Blizzard", "Snow Leopard", 5));
northernZone.addAnimal(new Animal("Frost", "Arctic Fox", 3));
northernZone.addAnimal(new Animal("Penguin", "Emperor Penguin", 4));
northernZone.addAnimal(new Animal("Aurora", "Caribou", 6));
// 显示两个动物园中的所有动物
southernZone.displayAnimals();
northernZone.displayAnimals();
// 动物园管理交互菜单
boolean running = true;
while (running) {
// 显示菜单选项
System.out.println("\n===== ZOO MANAGEMENT SYSTEM =====");
System.out.println("1. Display all animals in Southern-Zone Zoo");
System.out.println("2. Display all animals in Northern-Zone Zoo");
System.out.println("3. Move an animal between zoos");
System.out.println("4. Add a new animal to a zoo");
System.out.println("5. Remove an animal from a zoo");
System.out.println("6. Find an animal");
System.out.println("0. Exit");
System.out.print("Enter your choice: ");
// 获取用户选择
int choice = input.nextInt();
input.nextLine(); // 清除缓冲区
// 处理用户选择
switch (choice) {
case 1:
southernZone.displayAnimals();
break;
case 2:
northernZone.displayAnimals();
break;
case 3:
// 在动物园之间移动动物
System.out.println("\n----- MOVE ANIMAL BETWEEN ZOOS -----");
System.out.println("1. Move from Southern-Zone to Northern-Zone");
System.out.println("2. Move from Northern-Zone to Southern-Zone");
System.out.print("Enter your choice: ");
// 根据用户选择确定源和目标动物园
int moveChoice = input.nextInt();
input.nextLine(); // 清除缓冲区
Zoo from = (moveChoice == 1) ? southernZone : northernZone;
Zoo to = (moveChoice == 1) ? northernZone : southernZone;
// 显示源动物园中可用的动物
System.out.println("Available animals in " + from.getName() + ":");
from.displayAnimals();
// 检查源动物园是否有动物可移动
if (from.getCounter() == 0) {
System.out.println("No animals available to move.");
break;
}
// 获取要移动的动物名称
System.out.print("Enter the name of the animal to move: ");
String animalName = input.nextLine();
// 检查动物是否存在于源动物园
int index = from.findAnimal(animalName);
if (index != -1) {
// 设置移动的物流
System.out.println("\nSetting up logistics for the move...");
// 创建车辆项目
Item vehicle = new Item("Transport Truck", "VEH_001");
System.out.print("Enter vehicle cost: RMB");
vehicle.setPrice(input.nextDouble());
input.nextLine(); // 清除缓冲区
// 创建燃料项目
Item fuel = new Item("Diesel Fuel", "FUEL_001");
System.out.print("Enter fuel cost: RMB");
fuel.setPrice(input.nextDouble());
input.nextLine(); // 清除缓冲区
// 设置照料者
int numCaretakers;
// 确保数字在1-3之间
do {
System.out.print("Enter the number of caretakers (between 1 and 3): ");
numCaretakers = input.nextInt();
input.nextLine(); // 清除缓冲区
if (numCaretakers < 1 || numCaretakers > 3) {
System.out.println("Invalid input! Please enter a number between 1 and 3.");
}
} while (numCaretakers < 1 || numCaretakers > 3);
System.out.println("Number of caretakers set to: " + numCaretakers);
// 获取照料者姓名
String[] caretakers = new String[numCaretakers];
for (int i = 0; i < numCaretakers; i++) {
System.out.print("Enter name of caretaker " + (i+1) + ": ");
caretakers[i] = input.nextLine();
}
// 创建带有所有组件的物流对象
Logistics logistics = new Logistics(vehicle, fuel, caretakers);
// 将动物从源动物园移动到目标动物园
from.moveAnimal(animalName, to, logistics);
// 显示更新后的动物园信息
from.displayAnimals();
to.displayAnimals();
} else {
System.out.println("--- Animal '" + animalName + "' not found in " + from.getName());
}
break;
case 4:
// 添加新动物
System.out.println("\n----- ADD NEW ANIMAL -----");
System.out.println("1. Add to Southern-Zone Zoo");
System.out.println("2. Add to Northern-Zone Zoo");
System.out.print("Enter your choice: ");
// 确定要添加到哪个动物园
int addChoice = input.nextInt();
input.nextLine(); // 清除缓冲区
Zoo selectedZooForAdd = (addChoice == 1) ? southernZone : northernZone;
// 从用户获取动物详细信息
System.out.print("Enter animal name: ");
String name = input.nextLine();
System.out.print("Enter animal species: ");
String species = input.nextLine();
System.out.print("Enter animal age: ");
int age = input.nextInt();
input.nextLine(); // 清除缓冲区
// 创建并添加新动物
Animal newAnimal = new Animal(name, species, age);
boolean added = selectedZooForAdd.addAnimal(newAnimal);
if (added) {
System.out.println("Animal added successfully!");
}
// 显示更新后的动物园
selectedZooForAdd.displayAnimals();
break;
case 5:
// 移除动物
System.out.println("\n----- REMOVE ANIMAL -----");
System.out.println("1. Remove from Southern-Zone Zoo");
System.out.println("2. Remove from Northern-Zone Zoo");
System.out.print("Enter your choice: ");
// 确定从哪个动物园移除
int removeChoice = input.nextInt();
input.nextLine(); // 清除缓冲区
Zoo selectedZooForRemove = (removeChoice == 1) ? southernZone : northernZone;
// 显示可用的动物
selectedZooForRemove.displayAnimals();
// 检查动物园是否有动物可移除
if (selectedZooForRemove.getCounter() == 0) {
System.out.println("No animals to remove.");
break;
}
// 获取要移除的动物名称
System.out.print("Enter the name of the animal to remove: ");
String animalToRemove = input.nextLine();
// 移除动物并显示更新后的动物园
selectedZooForRemove.deleteAnimal(animalToRemove);
selectedZooForRemove.displayAnimals();
break;
case 6:
// 查找动物
System.out.println("\n----- FIND ANIMAL -----");
System.out.print("Enter the name of the animal to find: ");
String animalToFind = input.nextLine();
// 在两个动物园中搜索动物
int indexSouthern = southernZone.findAnimal(animalToFind);
int indexNorthern = northernZone.findAnimal(animalToFind);
// 根据动物被发现的位置显示结果
if (indexSouthern != -1) {
System.out.println("Animal found in Southern-Zone Zoo:");
southernZone.getAnimal(indexSouthern).display();
} else if (indexNorthern != -1) {
System.out.println("Animal found in Northern-Zone Zoo:");
northernZone.getAnimal(indexNorthern).display();
} else {
System.out.println("Animal '" + animalToFind + "' not found in either zoo.");
}
break;
case 0:
running = false;
System.out.println("-----*****Exiting Zoo Management System. Goodbye!******-----");
break;
default:
System.out.println("Invalid choice. Please try again.");
}
}
// 关闭scanner
input.close();
}
}

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主要修复内容:

创建了缺失的Animal、Item和Logistics类
修复了ZooManagementSystem中的输入处理问题，确保在使用nextInt()后调用nextLine()清除缓冲区
增加了更详细的注释（中文）
确保在程序退出时关闭Scanner

这个实现现在应该可以正常工作，处理了之前代码中的所有问题。

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[已解决]输入缓冲区问题

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