Java實(shí)現(xiàn)圖書(shū)館借閱系統(tǒng)

更新時(shí)間：2022年03月11日 08:35:31 作者：twelve1959

這篇文章主要為大家詳細(xì)介紹了Java實(shí)現(xiàn)圖書(shū)館借閱系統(tǒng)，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了Java實(shí)現(xiàn)圖書(shū)館借閱系統(tǒng)的具體代碼，供大家參考，具體內(nèi)容如下

Main.java

package com.src1.booksystem;

import com.src1.booksystem.booklist.BookList;
import com.src1.booksystem.users.AdminUser;
import com.src1.booksystem.users.NormalUser;
import com.src1.booksystem.users.User;


import java.util.Scanner;
public class Main {
?? ?public static void main(String[] args) {
?? ??? ?//1.準(zhǔn)備書(shū)籍
?? ??? ?BookList bookList = new BookList();
?? ??? ?//2登錄
?? ??? ?User user = login();
?? ??? ?while ( true ) {
?? ??? ??? ?int chioce = user.menu();
?? ??? ??? ?//3.根據(jù)選擇調(diào)用方法
?? ??? ??? ?user.doOperation(chioce, bookList);
?? ??? ?}
?? ?}
?? ?public static User login() {
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?System.out.println("請(qǐng)輸入用戶名:");
?? ??? ?String name = scanner.nextLine();
?? ??? ?if ( "admin".equals(name) ) {
?? ??? ??? ?System.out.println("請(qǐng)輸入管理員密碼:");
?? ??? ??? ?String password = scanner.nextLine();
?? ??? ??? ?if ( "admin".equals(password) ) {
?? ??? ??? ??? ?System.out.println("hello! 尊敬的管理員! 歡迎來(lái)到藏經(jīng)閣");
?? ??? ??? ??? ?return new AdminUser(name);
?? ??? ??? ?} else {
?? ??? ??? ??? ?System.out.println("密碼錯(cuò)誤,進(jìn)入用戶端!");
?? ??? ??? ??? ?System.out.println("hello! "+ name+" 歡迎來(lái)到藏經(jīng)閣");
?? ??? ??? ??? ?return new NormalUser(name);
?? ??? ??? ?}
?? ??? ?}else {
?? ??? ??? ?System.out.println("hello! "+ name+" 歡迎來(lái)到藏經(jīng)閣");
?? ??? ??? ?return new NormalUser(name);
?? ??? ?}
?? ?}
}

package user

AdminUser.java

package com.src1.booksystem.users;

import com.src1.booksystem.operation.*;

import java.util.Scanner;


public class AdminUser extends User {
?? ?@Override
?? ?public int menu() {
?? ??? ?Scanner scanner = new Scanner(System.in);


?? ??? ?System.out.println("1.查找圖書(shū)");
?? ??? ?System.out.println("2.新增書(shū)籍");
?? ??? ?System.out.println("3.刪除書(shū)籍");
?? ??? ?System.out.println("4.書(shū)籍列表");
?? ??? ?System.out.println("0.退出系統(tǒng)");

?? ??? ?int chioce = scanner.nextInt();
?? ??? ?return chioce;
?? ?}

?? ?public AdminUser(String name) {
?? ??? ?super(name);
?? ??? ?this.operations = new IOperation[] {
?? ??? ??? ??? ?new ExitOperation(),
?? ??? ??? ??? ?new FindOperation(),
?? ??? ??? ??? ?new AddOperation(),
?? ??? ??? ??? ?new DelOperation(),
?? ??? ??? ??? ?new DisplayOperation()
?? ??? ?};
?? ?}
}

NormalUser.java

package com.src1.booksystem.users;

import com.src1.booksystem.operation.*;

import java.util.Scanner;

public class NormalUser extends User {
?? ?@Override
?? ?public int menu() {
?? ??? ?Scanner scanner = new Scanner(System.in);


?? ??? ?System.out.println("1.查找圖書(shū)");
?? ??? ?System.out.println("2.借閱書(shū)籍");
?? ??? ?System.out.println("3.歸還書(shū)籍");
?? ??? ?System.out.println("4.書(shū)籍列表");
?? ??? ?System.out.println("0.退出系統(tǒng)");

?? ??? ?int chioce = scanner.nextInt();
?? ??? ?return chioce;

?? ?}

?? ?public NormalUser(String name) {
?? ??? ?super(name);
?? ??? ?this.operations = new IOperation[] {
?? ??? ??? ??? ?new ExitOperation(),
?? ??? ??? ??? ?new FindOperation(),
?? ??? ??? ??? ?new BorrowOperation(),
?? ??? ??? ??? ?new ReturnOperation(),
?? ??? ??? ??? ?new DisplayOperation()
?? ??? ?};
?? ?}
}

User.java

package com.src1.booksystem.users;

import com.src1.booksystem.booklist.BookList;
import com.src1.booksystem.operation.IOperation;

abstract public class User {
?? ?public String name;
?? ?public IOperation[] operations;
?? ?/**
?? ? * 如果沒(méi)有menu 就不能通過(guò)user訪問(wèn)
?? ? */
?? ?public abstract int menu() ;
?? ?public void doOperation(int chioce, BookList bookList){
?? ??? ?//數(shù)組當(dāng)中元素的對(duì)象,通過(guò).調(diào)用對(duì)應(yīng)operation方法
?? ??? ?operations[chioce].work(bookList);
?? ?}
?? ?public User(String name) {
?? ??? ?this.name = name;
?? ?}

}

package book

book.java

package com.src1.booksystem.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) {
?? ??? ?this.name = name;
?? ??? ?this.author = author;
?? ??? ?this.price = price;
?? ?}


?? ?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 boolean isBorrowed() {
?? ??? ?return isBorrowed;
?? ?}

?? ?public void setBorrowed(boolean borrowed) {
?? ??? ?isBorrowed = borrowed;
?? ?}

?? ?@Override
?? ?public String toString() {
?? ??? ?return "[" +
?? ??? ??? ??? ?"書(shū)名:" + name +
?? ??? ??? ??? ?", 作者:" + author +
?? ??? ??? ??? ?", 價(jià)格:" + price + ","+
?? ??? ??? ??? ?(isBorrowed ? "已借出":"未借出")+"]";

?? ?}
}

package booklist

BookList.java

package com.src1.booksystem.booklist;
import com.src1.booksystem.book.Book;
public class BookList {
?? ?private ? Book[] books;
?? ?private int usedSize;

?? ?public BookList() {
?? ??? ?this.books = new Book[10];
?? ??? ?this.books[0] = new Book("西游記","吳承恩",13);
?? ??? ?this.books[1] = new Book("水滸傳","施耐庵",14);
?? ??? ?this.books[2] = new Book("三國(guó)演義","羅貫中",15);
?? ??? ?this.usedSize = 3;
?? ?}

?? ?public int getUsedSize() {
?? ??? ?return usedSize;
?? ?}

?? ?public ?void setUsedSize(int usedSize) {
?? ??? ?this.usedSize = usedSize;
?? ?}
?? ?public Book getBook(int pos) {
?? ??? ?return books[pos];
?? ?}

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

}

package operation

AddOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.book.Book;
import com.src1.booksystem.booklist.BookList;

import java.util.Scanner;

public class AddOperation implements ?IOperation{
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?System.out.println("請(qǐng)輸入書(shū)名");
?? ??? ?String name = scanner.nextLine();
?? ??? ?System.out.println("請(qǐng)輸入作者");
?? ??? ?String author = scanner.nextLine();

?? ??? ?System.out.println("請(qǐng)輸入價(jià)格");
?? ??? ?int price = scanner.nextInt();

?? ??? ??? ?Book book = new Book(name, author, price);
?? ??? ??? ?int curSize = bookList.getUsedSize();
?? ??? ??? ?bookList.setBooks(curSize, book);
?? ??? ??? ?bookList.setUsedSize(curSize + 1);
?? ??? ??? ?System.out.println("新增成功");


?? ?}
}

BorrowOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.book.Book;
import com.src1.booksystem.booklist.BookList;

import java.util.Scanner;


public class BorrowOperation implements IOperation {
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?System.out.println("借閱書(shū)籍");
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?System.out.println("請(qǐng)輸入你要借閱的圖書(shū)：");
?? ??? ?String name = scanner.nextLine();

?? ??? ?for (int i = 0; i < bookList.getUsedSize(); i++) {
?? ??? ??? ?Book book = bookList.getBook(i);
?? ??? ??? ?if(book.getName().equals(name)) {
?? ??? ??? ??? ?if(book.isBorrowed()) {
?? ??? ??? ??? ??? ?System.out.println("此書(shū)已經(jīng)借出了！");
?? ??? ??? ??? ??? ?return;
?? ??? ??? ??? ?}
?? ??? ??? ??? ?book.setBorrowed(true);
?? ??? ??? ??? ?System.out.println("借閱成功！");
?? ??? ??? ??? ?return;
?? ??? ??? ?}
?? ??? ?}
?? ??? ?System.out.println("沒(méi)系統(tǒng)未收錄這本書(shū)！");
?? ?}
}

DelOperation

未完善

package com.src1.booksystem.operation;

import com.src1.booksystem.booklist.BookList;

import java.util.Scanner;
import com.src1.booksystem.book.Book;

public class DelOperation implements IOperation{
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?System.out.println("請(qǐng)輸入要?jiǎng)h除的書(shū)名:");
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?String delbook = scanner.nextLine();
?? ??? ?int size = bookList.getUsedSize();

?? ??? ?for (int i = 0; i < size; i++) {
?? ??? ??? ?Book book = bookList.getBook(i);
?? ??? ??? ?if(book.getName().equals(delbook)) {
?? ??? ??? ??? ?if(i+1<size) {
?? ??? ??? ??? ??? ?bookList.setBooks(i, bookList.getBook(i + 1));
?? ??? ??? ??? ?}
?? ??? ??? ??? ?bookList.setUsedSize(size-1);
?? ??? ??? ??? ?if(i+2 < size) {
?? ??? ??? ??? ??? ?bookList.setBooks(i+1, bookList.getBook(i + 2));
?? ??? ??? ??? ?}
?? ??? ??? ?}
?? ??? ?}
?? ??? ?System.out.println("刪除成功!");
?? ?}
}

修改

public class DelOperation implements IOperation{
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?System.out.println("請(qǐng)輸入要?jiǎng)h除的書(shū)名:");
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?String delbook = scanner.nextLine();
?? ??? ?int size = bookList.getUsedSize();
?? ??? ?int pos = 0;
?? ??? ?int i = 0;
?? ??? ?for ( i = 0; i < size; i++) {
?? ??? ??? ?Book book = bookList.getBook(i);
?? ??? ??? ?if(book.getName().equals(delbook)) {
?? ??? ??? ??? ?pos = i;
?? ??? ??? ??? ?break;
?? ??? ??? ?}
?? ??? ?}
?? ??? ?if(i == size){
?? ??? ??? ?System.out.println("系統(tǒng)中沒(méi)有這本書(shū)");
?? ??? ??? ?return;
?? ??? ?}
?? ??? ?for(int j = pos; j < size-1; j++) {
?? ??? ??? ?bookList.setBooks(j, bookList.getBook(j + 1));
?? ??? ?}
?? ??? ?bookList.setUsedSize(size-1);
?? ??? ?System.out.println("刪除成功!");
?? ?}
}

DisplayOperation

import com.src1.booksystem.booklist.BookList;

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

ExitOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.booklist.BookList;


public class ExitOperation implements IOperation {
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?System.exit(0);
?? ?}
}

FindOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.book.Book;
import com.src1.booksystem.booklist.BookList;

import java.util.Scanner;


public class FindOperation implements IOperation{
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?System.out.println("請(qǐng)輸入要查找的書(shū)名");
?? ??? ?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(book);

?? ??? ??? ??? ?return;
?? ??? ??? ?}

?? ??? ?}
?? ?}
}

ReturnOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.book.Book;
import com.src1.booksystem.booklist.BookList;

import java.util.Scanner;

public class ReturnOperation implements IOperation {
?? ?@Override
?? ?public void work(BookList bookList) {
?? ??? ?Scanner scanner = new Scanner(System.in);
?? ??? ?System.out.println("請(qǐng)輸入你要?dú)w還的書(shū)名：");
?? ??? ?String name = scanner.nextLine();

?? ??? ?for (int i = 0; i < bookList.getUsedSize(); i++) {
?? ??? ??? ?Book book = bookList.getBook(i);
?? ??? ??? ?if(book.getName().equals(name)) {
?? ??? ??? ??? ?//說(shuō)明有這本書(shū)
?? ??? ??? ??? ?book.setBorrowed(false);
?? ??? ??? ??? ?System.out.println("歸還成功！");
?? ??? ??? ??? ?return;
?? ??? ??? ?}
?? ??? ?}
?? ??? ?System.out.println("系統(tǒng)未找到本書(shū)的相關(guān)信息！");
?? ?}
}

接口 IOperation

package com.src1.booksystem.operation;

import com.src1.booksystem.booklist.BookList;


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

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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