Java程序设计——图书管理系统

在这里插入图片描述

该程序有两个用户，为管理员和普通用户，管理员模式下，有增删查，打印功能，普通用户模式下，有查借还功能，具体实现代码如下

book package：
Book：

package book;

public class Book {
    private String name;
    private String author;
    private int price;
    private String type;
    private boolean isBorrowed;

    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;
    }

    @Override
    public String toString() {
        return "book.Book{" +
                "name='" + name + '\'' +
                ", author='" + author + '\'' +
                ", price=" + price +
                ", type='" + type + '\'' +
                ", isBorrowed=" + isBorrowed +
                '}';
    }
}

BookList：

package book;
public class BookList {
    private Book[] books = new Book[10];
    private int usedSize;

    public BookList(){
        books[0] = new Book("三国演义","罗贯中",59,"名著");
        books[1] = new Book("西游记","吴承恩",49,"名著");
        books[2] = new Book("红楼梦","曹雪芹",69,"名著");
        usedSize = 3;
    }

    public Book getBook(int pos){
        return books[pos];
    }

    public void setBooks(int pos,Book book){
        books[pos] = book;
    }

    public int getUsedSize() {
        return usedSize;
    }

    public void setUsedSize(int usedSize) {
        this.usedSize = usedSize;
    }
}

operation package：
AddOperation：

package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class AddOperation implements IOperation{

    @Override
    public void work(BookList bookList) {
        System.out.println("Add book!");
        Scanner scanner = new Scanner(System.in);
        System.out.println("please input the name of the book");
        String name = scanner.nextLine();
        System.out.println("please input the author of the book");
        String author = scanner.nextLine();
        System.out.println("please input the price of the book");
        int price = scanner.nextInt();
        System.out.println("please input the type of the book");
        String type = scanner.next();

        Book book = new Book(name,author,price,type);
        bookList.setBooks(bookList.getUsedSize(),book);
        bookList.setUsedSize(bookList.getUsedSize() + 1);

        System.out.println("success add book!");
    }
}

BorrowOperation：

package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class BorrowOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("BorrowBook!");
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please input the name of the book");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.getUsedSize(); i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(name)){
                book.setBorrowed(true);
                System.out.println("you get it");
                return;
            }
        }
        System.out.println("Can't find this book");
    }
}

DelOperationn

package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("Delete Book!");
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please input the name of the book");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.getUsedSize(); i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(name)){
                bookList.setBooks(i,null);
                return;
            }
        }
        System.out.println("Can't find this book");
    }
}

DisplayOperation：

package operation;

import book.Book;
import book.BookList;

public class DisplayOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("Display book!");
        for (int i = 0; i < bookList.getUsedSize(); i++) {
            Book book = bookList.getBook(i);
            System.out.println(book);
        }
    }
}

ExitOperation：

package operation;

import book.BookList;

public class EixtOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("Exit the system!");
        System.exit(0);
    }
}

FindOperation：

package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class FindOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("FindBook!");
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please input the name of the book");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.getUsedSize(); i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(name)){
                System.out.println("find it!");
                System.out.println(book);
                return;
            }
        }
        System.out.println("Can't find this book");
    }
}

IOperation：

package operation;

import book.BookList;

public interface IOperation {
    void work(BookList bookList);
}

ReturnOperation：

package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class ReturnOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("BorrowBook!");
        Scanner scanner = new Scanner(System.in);
        System.out.println("Please input the name of the book");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.getUsedSize(); i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(name)){
                book.setBorrowed(true);
                System.out.println("you return it");
                return;
            }
        }
        System.out.println("Can't find this book");
    }
}

user package：
AdminUser：

package user;

import book.BookList;
import operation.*;

import java.util.Scanner;

public class AdminUser extends User{
    public AdminUser(String userName) {
        super(userName);
        this.iOperations = new IOperation[]{
                new EixtOperation(),
                new FindOperation(),
                new AddOperation(),
                new DelOperation(),
                new DisplayOperation()
        };
    }

    @Override
    public int menu(){
        System.out.println("hello " + this.userName + "Welcome to the Library!");
        System.out.println("#########################");
        System.out.println("#####   1.FindBook   ####");
        System.out.println("#####   2.AddBook    ####");
        System.out.println("#####   3.DeleteBook ####");
        System.out.println("#####   4.DisplayBook####");
        System.out.println("#####   0.Exit       ####");
        System.out.println("#########################");
        System.out.println("Please input your choose");

        Scanner sca = new Scanner(System.in);
        int choice = sca.nextInt();
        return choice;
    }

    public void doOperation(int choice, BookList bookList){
        this.iOperations[choice].work(bookList);
    }
}

NormalUser：

package user;

import book.BookList;
import operation.*;

import java.util.Scanner;

public class NormalUser extends User{

    public NormalUser(String userName) {
        super(userName);
        this.iOperations = new IOperation[]{
                new EixtOperation(),
                new FindOperation(),
                new BorrowOperation(),
                new ReturnOperation()
        };
    }

    @Override
    public int menu(){
        System.out.println("hello " + this.userName + "Welcome to the Library!");
        System.out.println("#########################");
        System.out.println("#####   1.FindBook   ####");
        System.out.println("#####   2.BorrowBook ####");
        System.out.println("#####   3.ReturnBook ####");
        System.out.println("#####   0.Exit       ####");
        System.out.println("#########################");
        System.out.println("Please input your choose");

        Scanner sca = new Scanner(System.in);
        int choice = sca.nextInt();
        return choice;
    }

    public void doOperation(int choice, BookList bookList){
        this.iOperations[choice].work(bookList);
    }
}

User：

package user;

import book.BookList;
import operation.IOperation;

public abstract class User {
    protected String userName;
    protected IOperation[] iOperations;

    public User(String userName) {
        this.userName = userName;
    }

    public abstract int menu();

    public abstract void doOperation(int choice, BookList bookList);
}

Main：

import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;

import java.util.Scanner;

public class Main {
    public static User login(){
        System.out.println("Please input your name");
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();

        System.out.println("Please input your identify");
        System.out.println("1:->AdminUser   2:->NormalUser");
        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();
            user.doOperation(choice, bookList);
        }
    }
}

Java程序设计——图书管理系统

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