做网站的具体需求营销型网站建设多少钱

下面是一个基于控制台的简单图书管理系统实现，使用Java面向对象编程，包含基本的图书增删改查功能。

import java.util.ArrayList;
import java.util.Scanner;class Book {private String id;private String title;private String author;private double price;private boolean isBorrowed;public Book(String id, String title, String author, double price) {this.id = id;this.title = title;this.author = author;this.price = price;this.isBorrowed = false;}// Getters and Setterspublic String getId() {return id;}public String getTitle() {return title;}public String getAuthor() {return author;}public double getPrice() {return price;}public boolean isBorrowed() {return isBorrowed;}public void setBorrowed(boolean borrowed) {isBorrowed = borrowed;}@Overridepublic String toString() {return "ID: " + id + ", 书名: " + title + ", 作者: " + author + ", 价格: " + price + ", 状态: " + (isBorrowed ? "已借出" : "可借阅");}
}class Library {private ArrayList<Book> books = new ArrayList<>();// 添加图书public void addBook(Book book) {books.add(book);System.out.println("添加成功: " + book.getTitle());}// 删除图书public void removeBook(String id) {for (Book book : books) {if (book.getId().equals(id)) {books.remove(book);System.out.println("删除成功: " + book.getTitle());return;}}System.out.println("未找到ID为 " + id + " 的图书");}// 查找图书public void findBook(String keyword) {boolean found = false;for (Book book : books) {if (book.getId().contains(keyword) || book.getTitle().contains(keyword) || book.getAuthor().contains(keyword)) {System.out.println(book);found = true;}}if (!found) {System.out.println("未找到相关图书");}}// 借阅图书public void borrowBook(String id) {for (Book book : books) {if (book.getId().equals(id)) {if (book.isBorrowed()) {System.out.println("该书已被借出");} else {book.setBorrowed(true);System.out.println("借阅成功: " + book.getTitle());}return;}}System.out.println("未找到ID为 " + id + " 的图书");}// 归还图书public void returnBook(String id) {for (Book book : books) {if (book.getId().equals(id)) {if (book.isBorrowed()) {book.setBorrowed(false);System.out.println("归还成功: " + book.getTitle());} else {System.out.println("该书未被借出");}return;}}System.out.println("未找到ID为 " + id + " 的图书");}// 显示所有图书public void displayAllBooks() {if (books.isEmpty()) {System.out.println("图书馆暂无图书");return;}System.out.println("====== 图书列表 ======");for (Book book : books) {System.out.println(book);}}
}public class LibraryManagementSystem {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);Library library = new Library();// 初始化一些示例图书library.addBook(new Book("B001", "Java编程思想", "Bruce Eckel", 108.0));library.addBook(new Book("B002", "Effective Java", "Joshua Bloch", 78.0));library.addBook(new Book("B003", "深入理解Java虚拟机", "周志明", 99.0));while (true) {System.out.println("\n====== 图书管理系统 ======");System.out.println("1. 添加图书");System.out.println("2. 删除图书");System.out.println("3. 查找图书");System.out.println("4. 借阅图书");System.out.println("5. 归还图书");System.out.println("6. 显示所有图书");System.out.println("0. 退出系统");System.out.print("请选择操作: ");int choice = scanner.nextInt();scanner.nextLine(); // 消耗换行符switch (choice) {case 1:System.out.print("输入图书ID: ");String id = scanner.nextLine();System.out.print("输入书名: ");String title = scanner.nextLine();System.out.print("输入作者: ");String author = scanner.nextLine();System.out.print("输入价格: ");double price = scanner.nextDouble();library.addBook(new Book(id, title, author, price));break;case 2:System.out.print("输入要删除的图书ID: ");String delId = scanner.nextLine();library.removeBook(delId);break;case 3:System.out.print("输入查找关键词(ID/书名/作者): ");String keyword = scanner.nextLine();library.findBook(keyword);break;case 4:System.out.print("输入要借阅的图书ID: ");String borrowId = scanner.nextLine();library.borrowBook(borrowId);break;case 5:System.out.print("输入要归还的图书ID: ");String returnId = scanner.nextLine();library.returnBook(returnId);break;case 6:library.displayAllBooks();break;case 0:System.out.println("感谢使用图书管理系统，再见！");scanner.close();System.exit(0);default:System.out.println("无效选择，请重新输入");}}}
}

功能说明

1.图书类(Book)：

包含图书ID、书名、作者、价格和借阅状态

2.提供基本的getter和setter方法

3.图书馆类(Library)：

使用ArrayList管理图书集合

实现添加、删除、查找、借阅、归还和显示所有图书功能

4.主程序(LibraryManagementSystem)：

5.提供控制台菜单界面

如何运行

1.将代码保存为LibraryManagementSystem.java

2.编译并运行：

javac LibraryManagementSystem.java
java LibraryManagementSystem

系统功能

1，添加图书

2.删除图书

3.查找图书(支持ID、书名、作者搜索)

4.借阅图书

5.归还图书

6.显示所有图书信息

7.退出系统

扩展建议

如果需要进一步完善该系统，可以考虑：

1.使用文件或数据库持久化存储图书数据

2.添加用户登录和管理员权限功能

3.实现图书分类和更复杂的搜索功能

4.添加借阅期限和逾期处理功能

5.使用Swing或JavaFX实现图形界面