book包

Book

public class Book {
//书的各种属性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;}@Overridepublic String toString() {return "Book{" +"name='" + name + '\'' +", author='" + author + '\'' +", price=" + price +", type='" + type + '\'' +", isBorrowed=" + isBorrowed +'}';}
}

BookList

public class BookList {private Book[] books ;private int usedSize;//记录当前书架上 实际存放的书的 数量private static final int DEFAULT_CAPACITY = 10;public BookList() {this.books = new Book[DEFAULT_CAPACITY];//放好书！！this.books[0] = new Book("三国演义","罗贯中",10,"小说");this.books[1] = new Book("西游记","吴承恩",9,"小说");this.books[2] = new Book("红楼梦","曹雪芹",19,"小说");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) {books[pos] = book;}public Book[] getBooks() {return books;}
}

operation包

Add

import book.Book;
import book.BookList;import java.util.Scanner;public class Add implements Io{@Overridepublic void work(BookList bookList) {Scanner scanner=new Scanner(System.in);System.out.println("请输入新增图书的名字");String name=scanner.nextLine();System.out.println("请输入新增图书的作者");String author=scanner.nextLine();System.out.println("请输入新增图书的价格");int price=scanner.nextInt();System.out.println("请输入新增图书的类型");String type=scanner.nextLine();Book book=new Book(name,author,price,type);int size=bookList.getUsedSize();if (size==bookList.getBooks().length){System.out.println("书架满了");return;}for(int i=0;i<size;i++){if (bookList.getBook(i).getName().equals(name)){System.out.println("已经有这本书了");return;}}bookList.setBooks(size,book);bookList.setUsedSize(size+1);}
}

Borrow

import book.BookList;import java.util.Scanner;public class Borrow implements Io{@Overridepublic void work(BookList bookList) {System.out.println("请输入您要借的书名");Scanner sc=new Scanner(System.in);String name=sc.nextLine();int size=bookList.getUsedSize();for(int i=0;i<size;i++){if(bookList.getBook(i).getName().equals(name)){System.out.println("有您要借的书");System.out.println(bookList.getBook(i));}}System.out.println("您要借的书不存在");}
}

Exit

import book.BookList;public class Exit implements Io{@Overridepublic void work(BookList bookList) {System.out.println("退出系统！");System.exit(0);}
}

Find

import book.Book;
import book.BookList;import java.util.Scanner;public class Find implements Io{@Overridepublic void work(BookList bookList) {System.out.println("查找图书！");Scanner scanner = new Scanner(System.in);String name = scanner.nextLine();//遍历这个数组int currentSize = bookList.getUsedSize();for (int i = 0; i < currentSize; i++) {Book book = bookList.getBook(i);if(book.getName().equals(name)) {System.out.println("找到了这本书，信息如下：");System.out.println(book);return;}}System.out.println("没有找到这本书！");}
}

Io

import book.BookList;public interface Io {void work(BookList bookList);
}

Return

import book.BookList;import java.util.Scanner;public class Return implements Io{@Overridepublic void work(BookList bookList) {System.out.println("请输入您要归还图书名");Scanner sc=new Scanner(System.in);String name=sc.nextLine();int szie=bookList.getUsedSize();for(int i=0;i<szie;i++){if(bookList.getBook(i).getName().equals(name)){bookList.getBook(i).setBorrowed(false);System.out.println("归还成功");return;}}System.out.println("未找到您要归还的图书");}
}

Show

import book.BookList;public class Show implements Io{@Overridepublic void work(BookList bookList) {System.out.println("打印图书");int size=bookList.getUsedSize();for(int i=0;i<size;i++){System.out.println(bookList.getBook(i));}}
}

user包

Max

import operation.*;import java.util.Scanner;public class Max extends Users{public Max(String name){//父类先进行构造super(name);this.io = new Io[]{new Exit(),new Find(),new Add(),new Del(),new Show(),};}@Overridepublic int menu() {System.out.println("**********管理员用户*****");System.out.println("1. 查找图书");System.out.println("2. 新增图书");System.out.println("3. 删除图书");System.out.println("4. 显示图书");System.out.println("0. 退出系统");System.out.println("**********************");Scanner scanner = new Scanner(System.in);System.out.println("请输入你的操作：");int choice = scanner.nextInt();return choice;}
}

Min

import operation.*;import java.util.Scanner;public class Min extends Users{public Min(String name){super(name);this.io = new Io[]{new Exit(),new Find(),new Borrow(),new Return()};}@Overridepublic int menu() {System.out.println("**********普通用户******");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. 退出系统");System.out.println("**********************");Scanner scanner = new Scanner(System.in);System.out.println("请输入你的操作：");int choice = scanner.nextInt();return choice;}
}

Users

import book.BookList;
import operation.Io;public abstract class Users  {
private String name;
public Io io[];
public Users(String name){this.name=name;
}
public abstract int menu();
public void choice(int choice, BookList bookList){io[choice].work(bookList);
}}

主函数

import book.BookList;
import user.Max;
import user.Users;import java.util.Scanner;public class Main {public static Users shenfen(){Scanner sc=new Scanner(System.in);System.out.println("请输入您的身份");String name= sc.nextLine();if(name.equals("Max")){return new Max(name);}if(name.equals("Min")) {return new Max(name);}return null;}public static void main(String[] args) {Users users=shenfen();Scanner sc=new Scanner(System.in);BookList bookList=new BookList();while (true){int chioce=users.menu();users.choice(chioce,bookList);}}
}