Java项目---图书馆

//Library.book包 //book包下 Book类 package Library.book; public class Book { private String name; private String author; private String id ; private int price; private String type; private boolean isBorrowed; public Book(String name, String author, String id, int price, String type, boolean isBorrowed) { this.name = name; this.author = author; this.id = id; this.price = price; this.type = type; this.isBorrowed = isBorrowed; } public String getId() { return id; } public String getName(){ return name; } @Override public String toString() { return "Book{" + "name='" + name + '\'' + ", author='" + author + '\'' + ", id='" + id + '\'' + ", price=" + price + ", type='" + type + '\'' + ", isBorrowed=" + isBorrowed + '}'; } public boolean isBorrowed() { return isBorrowed; } public void setBorrowed(boolean borrowed) { isBorrowed = borrowed; } } //book包下BookList类 package Library.book; public class BookList { private Book[] books = new Book[100]; private int size; public BookList() { books[0] = new Book("三国演义","罗贯中","001",100,"古典小说",false); books[1] = new Book("水浒传","施耐庵","002",100,"古典小说",false); books[2] = new Book("西游记", "吴承恩", "003", 100, "古典小说", false); size = 3; } public int getSize(){ return size; } public Book getBooks(int index) { return books[index]; } public void setBooks(int index,Book book) { books[index] = book; } public void setSize(int size) { this.size = size; } } //Library包下Opeartion包 //Opeartion包下IOperation接口 package Library.Operation; import Library.book.BookList; public interface IOperation { void work(BookList bookList); } //Opeartion包下AddBook类 package Library.book; public class BookList { private Book[] books = new Book[100]; private int size; public BookList() { books[0] = new Book("三国演义","罗贯中","001",100,"古典小说",false); books[1] = new Book("水浒传","施耐庵","002",100,"古典小说",false); books[2] = new Book("西游记", "吴承恩", "003", 100, "古典小说", false); size = 3; } public int getSize(){ return size; } public Book getBooks(int index) { return books[index]; } public void setBooks(int index,Book book) { books[index] = book; } public void setSize(int size) { this.size = size; } } //Opeartion包下BorrowBook类 package Library.Operation; import Library.book.Book; import Library.book.BookList; import java.util.Scanner; public class BorrowBook implements IOperation { @Override public void work(BookList bookList){ System.out.println("借阅书籍"); Scanner scanner = new Scanner(System.in); System.out.println("请输入借阅数据id号码: "); String id = scanner.next(); for(int i = 0; i < bookList.getSize(); ++i){ Book book = bookList.getBooks(i); if(!book.getId().equals(id)){ continue; } if(book.isBorrowed()){ System.out.println("这本书已经被借走"); break; } System.out.println("借阅成功"); book.setBorrowed(true); } } } //Opeartion包下DelBook类 package Library.Operation; import Library.book.Book; import Library.book.BookList; import java.util.Scanner; public class DelBook implements IOperation { @Override public void work(BookList bookList){ System.out.println("删除书籍信息"); Scanner scanner = new Scanner(System.in); System.out.println("请输入删除书籍的id号码："); String id = scanner.next(); int i = 0; for(; i < bookList.getSize(); ++i){ Book book = bookList.getBooks(i); if(book.getId().equals(id)){ bookList.setBooks(i,bookList.getBooks(bookList.getSize() - 1)); bookList.setSize(bookList.getSize() - 1); System.out.println("删除成功"); break; } } if(i >= bookList.getSize()){ System.out.println("没有找到该书籍"); } } } //Opeartion包下ExitOperation类 package Library.Operation; import Library.book.BookList; public class ExitOperation implements IOperation { @Override public void work(BookList bookList){ System.out.println("Good Bye!"); System.exit(0); } } //Opeartion包下FindBook类 package Library.Operation; import Library.book.Book; import Library.book.BookList; import java.util.Scanner; public class FindBook implements IOperation { @Override public void work(BookList bookList){ System.out.println("查找书籍"); Scanner scanner = new Scanner(System.in); System.out.println("请输入想要查阅书籍名称："); String name = scanner.next(); int count = 0; for(int i = 0; i < bookList.getSize(); ++i){ Book book = bookList.getBooks(i); if(book.getName().equals(name)){ System.out.println(book); count++; } } if(count == 0){ System.out.println("未找到该书"); }else { System.out.println("找到 " + count + "本书" ); } } } //Opeartion包下PrintAllBook类 package Library.Operation; import Library.book.BookList; public class PrintAllBook implements IOperation{ @Override public void work(BookList bookList){ System.out.println("打印所有书籍信息"); for(int i = 0; i < bookList.getSize(); i++){ System.out.println(bookList.getBooks(i)); } System.out.println("共计" + bookList.getSize() + "本书籍"); } } //Opeartion包下ReturnBook类 package Library.Operation; import Library.book.Book; import Library.book.BookList; import java.util.Scanner; public class ReturnBook implements IOperation { @Override public void work(BookList bookList){ System.out.println("归还书籍"); Scanner scanner = new Scanner(System.in); System.out.println("请输入归还书籍的id号码："); String id = scanner.next(); for(int i = 0; i < bookList.getSize(); ++i){ Book book = bookList.getBooks(i); if(!book.getId().equals(id)){ continue; } if(!book.isBorrowed()){ System.out.println("这本书已经被归还"); break; } book.setBorrowed(false); } } } //Library包下user包 //user包下User类 package Library.user; import Library.Operation.IOperation; import Library.book.BookList; abstract public class User { protected String name; public User(String name){ this.name = name; } protected IOperation[] operations; public abstract int menu(); public void doOperation(int choice , BookList bookList) { operations[choice].work(bookList); } } //user包下Teacher类 package Library.user; import Library.Operation.*; import java.util.Scanner; public class Teacher extends User { public Teacher(String name) { super(name); operations = new IOperation[]{ new ExitOperation(), new FindBook(), new Addbook(), new DelBook(), new PrintAllBook() }; } @Override public int menu() { System.out.println("==========="); System.out.println("Hello " + name); System.out.println("1. 查阅书籍"); System.out.println("2. 增加书籍"); System.out.println("3. 删除书籍"); System.out.println("4. 打印所有书籍"); System.out.println("0. 退出登陆"); System.out.println("==========="); System.out.println("请输入您的选择："); Scanner scanner = new Scanner(System.in); int choice = scanner.nextInt(); return choice; } } //user包下Students类 package Library.user; import Library.Operation.*; import java.util.Scanner; public class Student extends User { public Student(String name) { super(name); operations = new IOperation[]{ new ExitOperation(), new FindBook(), new BorrowBook(), new ReturnBook() }; } @Override public int menu(){ System.out.println("==========="); System.out.println("Hello " + name); 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. 退出登陆"); System.out.println("==========="); System.out.println("请输入您的选择："); Scanner scanner = new Scanner(System.in); int choice = scanner.nextInt(); return choice; } }