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欢迎来到我的Java图书管理系统#xff0c;接下来让我们一同探索如何书写图书管理系统吧#xff01;
1管理端和用户端
2建立相关的三个包#xff08;book、operation、user#xff09;
3建立程序入口Main类
4程序运行 1.首先图书馆管理系统分为管理员端和…我的个人主页
欢迎来到我的Java图书管理系统接下来让我们一同探索如何书写图书管理系统吧
1管理端和用户端
2建立相关的三个包book、operation、user
3建立程序入口Main类
4程序运行 1.首先图书馆管理系统分为管理员端和用户端 1.1管理员端AdminUser::menu() ------------------------------------------------------管理员菜单------------------------------------------------------
1.查找图书2.新增图书3.删除图书4.显示图书0.退出图书 ------------------------------------------------------------------------------------------------------------------------
1.2用户端NormalUser::menu()
------------------------------------------------------用户端----------------------------------------------------------
1.查找图书2.借阅图书3.归还图书0.退出系统 ------------------------------------------------------------------------------------------------------------------------ 2.建立三个包book书相关的包operation操作相关的包user使用者相关的包 2.1再在book包里面建立Book书籍对象和BookList书架类 Book
package book;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:39*/
public class Book{private String name;//书籍名称private String author;//作者private int price;//价格private String taye;//类型private boolean isBorrowed;;//是否被借出public Book(String name, String author, int price, String taye) {this.name name;this.author author;this.price price;this.taye taye;}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;}
这里可以通过快捷键altinsert快速构造成员方法也可以快速构建get和set
BookList
package book;
import java.security.PrivilegedAction;
/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:38*/public class BookList {private Book[] books; //存放书籍private static final int DEFAULT_SIZE 10;private int usedSize; // 有效书籍的个数//private int xxxx;public BookList() {this.books new Book[DEFAULT_SIZE];//预先存3本书this.books[0] new Book(三国演义,罗贯中,19,武侠);this.books[1] new Book(西游记,吴承恩,20,神话);this.books[2] new Book(红楼梦,曹雪芹,15,小说);this.usedSize 3;}public Book[] getBooks() {return books;}public int getUsedSize() {return usedSize;}public void setUsedSize(int usedSize) {this.usedSize usedSize;}//.....还有待补充的public Book getBook(int pos) {return books[pos];}public void setBooks(int pos,Book book) {books[pos] book;}
}
2.2在operation包里面建立AddBook、 BorrowedBook、DelBook、ExitBook、FindBook ReturnBook、ShowBook类IOPeration接口 AddBook
package operation;
import book.Book;
import book.BookList;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:17*/
public class AddBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(新增图书....);/*if(isFull(bookList)) {System.out.println(书架满了....);return;}*//* if(isFull(bookList)) {//扩容的代码 Arrays.copyOf();}*///1. 整理书籍的信息Scanner scanner new Scanner(System.in);System.out.println(请输入书籍的名称);String name scanner.nextLine();System.out.println(请输入书籍的作者);String author scanner.nextLine();System.out.println(请输入书籍的价格);int price scanner.nextInt();scanner.nextLine();System.out.println(请输入书籍的类型);String type scanner.nextLine();Book book new Book(name,author,price,type);//2.如果书架有这本书 则不能上架int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {Book tmp bookList.getBook(i);if(tmp.getName().equals(name)) {System.out.println(有这本书可以不上架);return;}}//3.没有这本书 则放到书籍数组当中bookList.setBooks(currentSize,book);bookList.setUsedSize(currentSize1);}private boolean isFull(BookList bookList) {return bookList.getBooks().length bookList.getUsedSize();}
}
BorrowedBook
package operation;
import book.Book;
import book.BookList;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:22*/
public class BorrowedBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(借阅图书....);System.out.println(请输入你要借阅的图书);Scanner scanner new Scanner(System.in);String name scanner.nextLine();//1.先遍历数组 查找是否存在要借阅的图书int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {Book book bookList.getBook(i);if(book.getName().equals(name)) {//2.如果存在 检查 是否已经被借出if(book.isBorrowed()) {System.out.println(这本书已经被借出了);}else {//3. 如果没有借出 可以借book.setBorrowed(true);System.out.println(book);System.out.println(借阅成功);}return;}}//4.如果不存在 则不能借阅System.out.println(没有你要找的这本书无法借阅);}
}
DelBook
package operation;
import book.Book;
import book.BookList;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:24*/
public class DelBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(删除图书....);Scanner scanner new Scanner(System.in);//1、输入你要删除的图书名称System.out.println(请输入要删除书籍的名称);String name scanner.nextLine();//2.查看当前书籍是否存在int index -1;int i 0;int currentSize bookList.getUsedSize();for (; i currentSize; i) {Book tmp bookList.getBook(i);if(tmp.getName().equals(name)) {index i;break;}}//没有遇到breakif(i currentSize) {System.out.println(没有你要删除的书....);return;}//遇到break 此时开始真正删除for (int j index; j currentSize-1; j) {//bookList[j] bookList[j1]; errorBook tmp bookList.getBook(j1);bookList.setBooks(j,tmp);}//修改usedSize的值bookList.setUsedSize(currentSize-1);bookList.setBooks(currentSize-1,null);System.out.println(删除图书成功了.....);}
}
ExitBook
package operation;import book.BookList;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:12*/
public class ExitBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(退出系统.....);int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {//bookList[i] null;bookList.setBooks(i,null);}bookList.setUsedSize(0);System.exit(0);}
}FindBook
package operation;import book.BookList;
import book.Book;
import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:25*/
public class FindBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(查找图书...);Scanner scanner new Scanner(System.in);System.out.println(请输入你要查找的图书的名字);String name scanner.nextLine();//1.先确定 当前数组当中 有效的书籍个数int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {Book book bookList.getBook(i);if(book.getName().equals(name)) {System.out.println(找到这本书籍了书籍内容如下);System.out.println(book);return;}}System.out.println(没有你要查找的图书的书籍);}
}
ReturnBook
package operation;
import book.Book;
import book.BookList;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:27*/
public class ReturnBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(归还图书....);System.out.println(请输入你要归还的图书);Scanner scanner new Scanner(System.in);String name scanner.nextLine();//1.先遍历数组 查找是否存在要归还的图书int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {Book book bookList.getBook(i);if(book.getName().equals(name)) {if(!book.isBorrowed()) {System.out.println(这本书没有被借出过不用还);}else {System.out.println(归还成功);book.setBorrowed(false);System.out.println(book);}return;}}//4.如果不存在 则不能归还System.out.println(没有你要找的这本书无法归还);}
}
ShowBook
package operation;
import book.Book;
import book.BookList;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:27*/
public class ShowBook implements IOPeration{Overridepublic void work(BookList bookList) {System.out.println(打印图书....);int currentSize bookList.getUsedSize();for (int i 0; i currentSize; i) {Book tmp bookList.getBook(i);System.out.println(tmp);}}
}
IOPeration
package operation;import book.BookList;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:13:09*/
public interface IOPeration {void work(BookList books);
}
2.3 user包中建立AdminUser、NormalUser、User类 AdminUser
package user;import operation.*;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:43*/
public class AdminUser extends User{public AdminUser(String name) {super(name);this.ioPerations new IOPeration[]{new ExitBook(),new FindBook(),new AddBook(),new DelBook(),new ShowBook()};}Overridepublic int menu() {System.out.println(欢迎 this.name 来到图书管理系统!);System.out.println(**********管理员菜单*********);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;}
}
NormalUser
package user;import operation.*;import java.util.Scanner;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:42*/
public class NormalUser extends User{public NormalUser(String name) {super(name);this.ioPerations new IOPeration[]{new ExitBook(),new FindBook(),new BorrowedBook(),new ReturnBook()};}Overridepublic int menu() {System.out.println(欢迎 this.name 来到图书管理系统!);System.out.println(**********普通用户菜单*********);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;}}User
package user;import book.BookList;
import operation.IOPeration;/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:42*/
public abstract class User {public String name;public IOPeration[] ioPerations; //没有初始化public User(String name) {this.name name;}public abstract int menu();public void doOperations(int choice, BookList books) {//return this.ioPerations[choice];IOPeration ioPeration this.ioPerations[choice];//IOPeration ioPeration new FindBook();ioPeration.work(books);}
}3整个程序的入口Main类 Main
/*** Created with IntelliJ IDEA.* Description:* UserLenovo* Date:2024-10-26* Time:12:44*/
import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;import java.util.Scanner;
public class Main {public static User login(){Scanner scannernew Scanner(System.in);System.out.println(请输入你的姓名 );String namescanner.nextLine();System.out.println(请输入你的身份1管理员 2普通用户 );int choicescanner.nextInt();if(choice1){return new AdminUser(name);}else{return new NormalUser(name);}}public static void main(String[] args) {BookList bookListnew BookList();/* Book[] booksnew Book[10];books[0]new Book{三国演义,罗贯中,19,武侠};books[1]new Book{西游记,吴承恩,20,神话};books[2]new Book{红楼梦,曹雪芹,15,小说};usedsize3;*/User userlogin();while(true){int choiceuser.menu();user.doOperations(choice,bookList);}}
}这样一个简单的图书管理系统就实现了 4程序运行 4.1以管理员身份运行 4.2以用户身份运行 这次的图书管理系统之旅就到这里了
