```java
import java.util.ArrayList;
import java.util.Scanner;
class Animal {
private String id;
private String type;
private String color;
private String sex;
private int price;
private String buyDate;
private boolean isDead;
public Animal(String id, String type, String color, String sex, int price, String buyDate) {
this.id = id;
this.type = type;
this.color = color;
this.sex = sex;
this.price = price;
this.buyDate = buyDate;
this.isDead = false;
}
// getters and setters
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public String getBuyDate() {
return buyDate;
}
public void setDate(String buyDate) {
this.buyDate = buyDate;
}
public boolean isDead() {
return isDead;
}
public void setDead(boolean dead) {
isDead = dead;
}
@Override
public String toString() {
return "ID:" + id + "\t" + type + "\t" + color + "\t" + sex + "\t" + price + "\t" + buyDate;
}
}
public class ZooManager {
static Scanner scanner = new Scanner(System.in);
static ArrayList<Animal> animals = new ArrayList<>();
public static void main(String[] args) {
while (true) {
System.out.println("=====动物园管理系统=====");
System.out.println("1.添加动物信息");
System.out.println("2.注销一条动物信息");
System.out.println("3.查询全部动物信息");
System.out.println("4.查询某种颜色的动物信息");
System.out.println("5.统计某种类型的动物信息");
System.out.println("6.统计某种类型的动物的价值");
System.out.println("7.修改某个动物的基本信息");
System.out.println("8.退出");
System.out.println("请输入操作编号：");
int choice = scanner.nextInt();
switch (choice) {
case 1:
addAnimal();
break;
case 2:
cancelAnimal();
break;
case 3:
queryAllAnimals();
break;
case 4:
queryAnimalsByColor();
break;
case 5:
countAnimalsByType();
break;
case 6:
countPriceByType();
break;
case 7:
modifyAnimal();
break;
case 8:
System.out.println("谢谢使用，再见！");
return;
default:
System.out.println("输入无效，请重新输入！");
}
}
}
private static void addAnimal() {
System.out.println("请输入动物信息，格式为：ID、类型、颜色、性别、价格、入园日期(yyyy-MM-dd)：");
String id = scanner.next();
if (isIdExist(id)) {
System.out.println("该ID已存在！");
return;
}
String type = scanner.next();
String color = scanner.next();
String sex = scanner.next();
int price = scanner.nextInt();
String buyDate = scanner.next();
Animal animal = new Animal(id, type, color, sex, price, buyDate);
animals.add(animal);
System.out.println("添加成功！");
}
private static void cancelAnimal() {
System.out.println("请输入需要注销的动物的ID：");
String id = scanner.next();
int index = findIndexById(id);
if (index == -1) {
System.out.println("动物不存在！");
return;
}
Animal animal = animals.get(index);
animal.setDead(true);
System.out.println("注销成功！");
}
private static void queryAllAnimals() {
System.out.println("=======所有动物信息=======");
for (Animal animal : animals) {
if (!animal.isDead()) {
System.out.println(animal);
}
}
System.out.println("=========================");
继续实现代码如下：
private static void queryAnimalsByColor() {
System.out.println("请输入需要查询的动物颜色：");
String color = scanner.next();
System.out.println("=======颜色为 " + color + " 的动物=======");
for (Animal animal : animals) {
if (!animal.isDead() && animal.getColor().equals(color)) {
System.out.println(animal);
}
}
System.out.println("===========================");
}
private static void countAnimalsByType() {
System.out.println("请输入需要统计的动物类型：");
String type = scanner.next();
int count = 0;
for (Animal animal : animals) {
if (!animal.isDead() && animal.getType().equals(type)) {
count++;
}
}
System.out.println(type + " 的数量为：" + count);
}
private static void countPriceByType() {
System.out.println("请输入需要统计的动物类型：");
String type = scanner.next();
int totalPrice = 0;
for (Animal animal : animals) {
if (!animal.isDead() && animal.getType().equals(type)) {
totalPrice += animal.getPrice();
}
}
System.out.println(type + " 的总价值为：" + totalPrice);
}
private static void modifyAnimal() {
System.out.println("请输入需要修改的动物的ID：");
String id = scanner.next();
int index = findIndexById(id);
if (index == -1) {
System.out.println("动物不存在！");
return;
}
Animal animal = animals.get(index);
System.out.println("请输入需要修改的项编号：");
System.out.println("1.类型");
System.out.println("2.颜色");
System.out.println("3.性别");
System.out.println("4.价格");
System.out.println("5.入园日期");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("请输入新的类型：");
String type = scanner.next();
animal.setType(type);
break;
case 2:
System.out.println("请输入新的颜色：");
String color = scanner.next();
animal.setColor(color);
break;
case 3:
System.out.println("请输入新的性别：");
String sex = scanner.next();
animal.setSex(sex);
break;
case 4:
System.out.println("请输入新的价格：");
int price = scanner.nextInt();
animal.setPrice(price);
break;
case 5:
System.out.println("请输入新的入园日期(yyyy-MM-dd)：");
String buyDate = scanner.next();
animal.setDate(buyDate);
break default:
System.out.println("输入无效！");
break;
}
System.out.println("修改成功！");
}
private static boolean isIdExist(String id) {
for (Animal animal : animals) {
if (animal.getId().equals(id)) {
return true;
}
}
return false;
}
private static int findIndexById(String id) {
for (int i = 0; i < animals.size(); i++) {
if (animals.get(i).getId().equals(id)) {
return i;
}
}
return -1;
}
}
```
