本文用Java代码实现图书代码管理系统，有些地方可能会有纰漏，希望各位大佬鉴赏！！

文章目录

1.1创建book包

首先在book中要创建Book类和BookList类，进行封装图书，在Book类中要有书名，作者，价格，类型和是否被借出图书。在BookList类中是书架对图书的封装，进行图书初始化和对图书设置的各种方法。

Book类的实现

package book;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 13:48*/
public class Book {private String name;//书名private String author;//作者private int price;//价格private String type;//类型private boolean isBorrowed;//是否被借出public Book(){}public Book(String name, String author, int price, String type) {this.name = name;this.author = author;this.price = price;this.type = type;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getAuthor() {return author;}public void setAuthor(String author) {this.author = author;}public int getPrice() {return price;}public void setPrice(int price) {this.price = price;}public String getType() {return type;}public void setType(String type) {this.type = type;}public boolean isBorrowed() {return isBorrowed;}public void setBorrowed(boolean borrowed) {isBorrowed = borrowed;}@Overridepublic String toString() {return "book{" +"name='" + name + '\'' +", author='" + author + '\'' +", price=" + price +", type='" + type + '\'' +//", isBorrowed=" + isBorrowed +(isBorrowed == true ?  "已经被借出 " :  "未被借出 ")+'}';}}

BookList类的实现

package book;/*** @author xyk的电脑* @version 1.0* @description: 书架* @date 2023/1/24 13:51*/
public class BookList {private static final int DEFAULT_SIZE = 10;private Book[] books = new Book[DEFAULT_SIZE];private int usedSize;//记录当前books数组中 有多少本书public BookList() {books[0] = new Book("三国演义","罗贯中",89,"小说");books[1] = new Book("西游记","吴承恩",78,"小说");books[2] = new Book("红楼梦","曹雪芹",49,"小说");this.usedSize = 3;}public Book getBook(int pos){return this.books[pos];}public void setBook(int pos,Book book){this.books[pos] = book;}public void setBook(Book book){this.books[usedSize] = book;}public int getUsedSize() {return usedSize;}public void setUsedSize(int usedSize) {this.usedSize = usedSize;}
}

二、创建图书管理系统的操作包

2.1创建Operation接口

创建Operation接口来实现对图书的相关具体操作，其中管理员和普通用户的功能不同，需要都来实现Operation接口。

 IOPeration接口的实现

package opera;import book.BookList;public interface IOPeration {void work(BookList bookList);}

AddOperation类的实现

package opera;import book.Book;
import book.BookList;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:01*/
public class AddOperation implements IOPeration{@Overridepublic void work(BookList bookList) {Scanner scanner = new Scanner(System.in);System.out.println("请输入书名：");String name = scanner.nextLine();System.out.println("请输入作者：");String author = scanner.nextLine();System.out.println("请输入类型：");String type = scanner.nextLine();System.out.println("请输入价格：");int price = scanner.nextInt();Book book = new Book(name,author,price,type);int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book tmp = bookList.getBook(i);if (tmp.getName().equals(name)) {System.out.println("已经存在这本书了");return;}}bookList.setBook(book);//修改usedSizebookList.setUsedSize(currentSize+1);}
}

BrrowOperation类的实现

package opera;import book.Book;
import book.BookList;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:05*/
public class BrrowOperation implements IOPeration{@Overridepublic void work(BookList bookList) {System.out.println("输入你要借阅的图书");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);if(book.getName().equals(name) &&!book.isBorrowed()){book.setBorrowed(true);System.out.println("借阅成功");return;}}}
}

DelOperation类的实现

package opera;import book.Book;
import book.BookList;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:03*/
public class DelOpertaion implements IOPeration{@Overridepublic void work(BookList bookList) {System.out.println("删除图书");System.out.println("请输入你要删除的图书名字");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();int currentSize = bookList.getUsedSize();int index = -1;for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);if (book.getName().equals(name)){index = i;break;}}//挪动数据for (int j = index; j < currentSize-1; j++) {Book book = bookList.getBook(j+1);bookList.setBook(j,book);}//修改sizebookList.setUsedSize(currentSize-1);//最后置为nullbookList.setBook(currentSize-1,null);}
}

ExitOperation类的实现

package opera;import book.BookList;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:04*/
public class ExitOperation implements IOPeration{@Overridepublic void work(BookList bookList) {System.out.println("退出系统！");System.exit(0);}
}

FindOperation类的实现

package opera;import book.Book;
import book.BookList;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:01*/
public class FindOperation implements IOPeration {@Overridepublic void work(BookList bookList) {System.out.println("请输入书名: ");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);if (book.getName().equals(name)){System.out.println("找到了这本书: ");System.out.println(book);return;}}System.out.println("没有这本书！");}
}

ReturnOperation类的实现

package opera;import book.Book;
import book.BookList;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:05*/
public class ReturnOperation implements IOPeration{@Overridepublic void work(BookList bookList) {System.out.println("输入你要归还的图书");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);if(book.getName().equals(name) &&book.isBorrowed()){book.setBorrowed(false);System.out.println("归还成功");return;}}}
}

ShowOperation类的实现

package opera;import book.Book;
import book.BookList;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 14:04*/
public class ShowOperation implements IOPeration{@Overridepublic void work(BookList bookList) {int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);System.out.println(book);}}
}

三、创建User包

3.1创建User类

创建抽象类User来实现区别管理员和用户的主要功能。

package user;import book.Book;
import book.BookList;
import opera.IOPeration;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 13:57*/
public abstract class User {protected String name;protected IOPeration[] ioPerations;public User(String name){this.name = name;}public abstract int menu();public void doWork(int choice, BookList bookList){this.ioPerations[choice].work(bookList);}
}

NormalUser类的实现

package user;import opera.*;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 13:58*/
public class NormalUser extends User{public NormalUser(String name) {super(name);this.ioPerations = new IOPeration[]{new ExitOperation(),new FindOperation(),new BrrowOperation(),new ReturnOperation()};}public int menu(){System.out.println("******************************");System.out.println("hello "+name+ "欢迎来到图书小练习");System.out.println("1.查找图书");System.out.println("2.借阅图书");System.out.println("3.归还图书");System.out.println("0.退出系统");System.out.println("******************************");System.out.println("请输入你的操作：");Scanner scanner = new Scanner(System.in);int choice = scanner.nextInt();return choice;}
}

AdminUser类的实现

package user;import opera.*;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 13:57*/
public class AdminUser extends User{public AdminUser(String name) {super(name);this.ioPerations = new IOPeration[]{new ExitOperation(),new FindOperation(),new AddOperation(),new DelOpertaion(),new ShowOperation()};}public int menu(){System.out.println("******************************");System.out.println("hello "+name+" 欢迎来到图书小练习");System.out.println("1.查找图书");System.out.println("2.新增图书");System.out.println("3.删除图书");System.out.println("4.显示图书");System.out.println("0.退出系统");System.out.println("******************************");System.out.println("请输入你的操作：");Scanner scanner = new Scanner(System.in);int choice = scanner.nextInt();return choice;}
}

四、主函数的实现

在主函数中来进行图书管理系统的操作。

import book.Book;
import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;import java.util.Scanner;/*** @author xyk的电脑* @version 1.0* @description: TODO* @date 2023/1/24 13:44*/
public class Main {public static User login(){System.out.println("请输入你的姓名：");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();System.out.println("请输入你的身份：1->管理员  0->普通用户");int choice = scanner.nextInt();if (choice == 1){return new AdminUser(name);}else {return new NormalUser(name);}}public static void main(String[] args) {BookList bookList = new BookList();User user = login();while (true) {int choice = user.menu();//根据choice和user来确定调用哪个对象的操作user.doWork(choice, bookList);}}
}