以下是一个Java代码示例,它模拟了一个简单的图书馆管理系统。该系统包括书籍类(Book)、读者类(Reader)和图书馆类(Library)。详细注释每个部分并添加一些额外的功能,如借书、还书和书籍搜索。
java复制代码
// 导入必要的包
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
// 书籍类
class Book {
private String id;
private String title;
private String author;
private boolean isBorrowed;
// 构造方法
public Book(String id, String title, String author) {
this.id = id;
this.title = title;
this.author = author;
this.isBorrowed = false;
}
// getter和setter方法
// ...(此处省略getter和setter方法的代码)
// 书籍信息展示
@Override
public String toString() {
return "ID: " + id + ", Title: " + title + ", Author: " + author + ", Borrowed: " + isBorrowed;
}
}
// 读者类
class Reader {
private String id;
private String name;
private List<Book> borrowedBooks;
// 构造方法
public Reader(String id, String name) {
this.id = id;
this.name = name;
this.borrowedBooks = new ArrayList<>();
}
// 借阅书籍
public void borrowBook(Book book) {
if (!book.isBorrowed) {
book.isBorrowed = true;
borrowedBooks.add(book);
System.out.println(name + " borrowed " + book.title);
} else {
System.out.println("This book is already borrowed.");
}
}
// 归还书籍
public void returnBook(Book book) {
if (borrowedBooks.contains(book)) {
book.isBorrowed = false;
borrowedBooks.remove(book);
System.out.println(name + " returned " + book.title);
} else {
System.out.println("You haven't borrowed this book.");
}
}
// getter和setter方法
// ...(此处省略getter和setter方法的代码)
// 读者借阅的书籍列表展示
public void displayBorrowedBooks() {
System.out.println(name + " borrowed books:");
for (Book book : borrowedBooks) {
System.out.println(book);
}
}
}
// 图书馆类
class Library {
private List<Book> books;
// 构造方法
public Library() {
this.books = new ArrayList<>();
// 初始化一些书籍
books.add(new Book("1001", "Effective Java", "Bruce Eckel"));
books.add(new Book("1002", "Clean Code", "Robert C. Martin"));
books.add(new Book("1003", "Refactoring", "Martin Fowler"));
// ... 可以继续添加更多书籍
}
// 添加书籍到图书馆
public void addBook(Book book) {
books.add(book);
}
// 书籍搜索
public List<Book> searchBooks(String keyword) {
List<Book> searchResults = new ArrayList<>();
for (Book book : books) {
if (book.title.contains(keyword) || book.author.contains(keyword)) {
searchResults.add(book);
}
}
return searchResults;
}
// 展示图书馆所有书籍
public void displayBooks() {
System.out.println("All books in the library:");
for (Book book : books) {
System.out.println(book);
}
}
}
// 主类,用于运行图书馆管理系统的示例
public class LibraryManagementSystem {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// 创建图书馆实例
Library library = new Library();
// 展示所有书籍
library.displayBooks();
// 创建读者实例
Reader reader = new Reader("R001", "John以下是一个Java代码示例,它模拟了一个简单的图书馆管理系统。该系统包括书籍类(Book)、读者类(Reader)和图书馆类(Library)。为了满足1500字的要求,我将详细注释每个部分并添加一些额外的功能,如借书、还书和书籍搜索。
java
// 导入必要的包
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
// 书籍类
class Book {
private String id;
private String title;
private String author;
private boolean isBorrowed;
// 构造方法
public Book(String id, String title, String author) {
this.id = id;
this.title = title;
this.author = author;
this.isBorrowed = false;
}
// getter和setter方法
// ...(此处省略getter和setter方法的代码)
// 书籍信息展示
@Override
public String toString() {
return "ID: " + id + ", Title: " + title + ", Author: " + author + ", Borrowed: " + isBorrowed;
}
}
// 读者类
class Reader {
private String id;
private String name;
private List<Book> borrowedBooks;
// 构造方法
public Reader(String id, String name) {
this.id = id;
this.name = name;
this.borrowedBooks = new ArrayList<>();
}
// 借阅书籍
public void borrowBook(Book book) {
if (!book.isBorrowed) {
book.isBorrowed = true;
borrowedBooks.add(book);
System.out.println(name + " borrowed " + book.title);
} else {
System.out.println("This book is already borrowed.");
}
}
// 归还书籍
public void returnBook(Book book) {
if (borrowedBooks.contains(book)) {
book.isBorrowed = false;
borrowedBooks.remove(book);
System.out.println(name + " returned " + book.title);
} else {
System.out.println("You haven't borrowed this book.");
}
}
// getter和setter方法
// ...(此处省略getter和setter方法的代码)
// 读者借阅的书籍列表展示
public void displayBorrowedBooks() {
System.out.println(name + " borrowed books:");
for (Book book : borrowedBooks) {
System.out.println(book);
}
}
}
// 图书馆类
class Library {
private List<Book> books;
// 构造方法
public Library() {
this.books = new ArrayList<>();
// 初始化一些书籍
books.add(new Book("1001", "Effective Java", "Bruce Eckel"));
books.add(new Book("1002", "Clean Code", "Robert C. Martin"));
books.add(new Book("1003", "Refactoring", "Martin Fowler"));
// ... 可以继续添加更多书籍
}
// 添加书籍到图书馆
public void addBook(Book book) {
books.add(book);
}
// 书籍搜索
public List<Book> searchBooks(String keyword) {
List<Book> searchResults = new ArrayList<>();
for (Book book : books) {
if (book.title.contains(keyword) || book.author.contains(keyword)) {
searchResults.add(book);
}
}
return searchResults;
} henanhuahan.com
// 展示图书馆所有书籍
public void displayBooks() {
System.out.println("All books in the library:");
for (Book book : books) {
System.out.println(book);
}
}
}
// 主类,用于运行图书馆管理系统的示例
public class LibraryManagementSystem {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// 创建图书馆实例
Library library = new Library();
// 展示所有书籍
library.displayBooks();
// 创建读者实例
Reader reader = new Reader("R001", "JohnDoe");
// 书籍搜索和借阅示例
System.out.println("Search for a book (enter keyword):");
String keyword = scanner.nextLine();
List<Book> searchResults = library.searchBooks(keyword);
if (searchResults.isEmpty()) {
System.out.println("No books found.");
} else { yanziliangpin.com
System.out.println("Books found:");
for (Book book : searchResults) {
System.out.println(book);
System.out.println("Do you want to borrow this book? (yes/no)");
String borrow = scanner.nextLine();
if ("yes".equalsIgnoreCase(borrow)) {
reader.borrowBook(book);
}
}
}
// 显示读者借阅的书籍
reader.displayBorrowedBooks();
// 假设读者已经阅读完书籍并想要归还
System.out.println("Enter the ID of the book you want to return:");
String bookIdToReturn = scanner.nextLine();
for (Book book : library.books) {
if (book.id.equals(bookIdToReturn)) {
reader.returnBook(book);
break;
}
}
// 再次显示读者借阅的书籍(应该为空)
reader.displayBorrowedBooks();
// 关闭scanner
scanner.close();
}
}
// 注释:
// 以上代码模拟了一个简单的图书馆管理系统,包含了书籍的搜索、借阅和归还功能。
// 书籍类(Book)包含了书籍的基本信息,如ID、标题、作者以及是否被借阅的状态。
// 读者类(Reader)包含了读者的ID、姓名以及借阅的书籍列表。
// 图书馆类(Library)包含了图书馆的书籍列表,并提供了添加书籍、搜索书籍和展示所有书籍的方法。
// 主类(LibraryManagementSystem)用于运行这个图书馆管理系统的示例,并通过Scanner类与用户进行交互。
// 用户可以搜索书籍并决定是否借阅,也可以归还已经借阅的书籍。
// 这个代码示例添加了一些额外的注释和描述,使得代码更加详细和易于理解。在实际开发中,可能会根据具体需求进行更精简的设计和实现。