网站销售流程,邹平建设局网站,有哪些做平面设计好的网站,网站备案时间怎么查询系统实现的基本功能#xff1a; 登录时#xff0c;需要输入姓名#xff0c;然后选择作为管理者还是普通用户。选择成功后选择想要实现的功能。管理者的目录下方有有五个功能#xff0c;而普通用户有4个功能#xff0c;如下图 首先我们要建立Book这个类#xff0c;里面包含书…实现的基本功能 登录时需要输入姓名然后选择作为管理者还是普通用户。选择成功后选择想要实现的功能。管理者的目录下方有有五个功能而普通用户有4个功能如下图 首先我们要建立Book这个类里面包含书本的详细信息 public class Book {private String name;private String author;private int price;private String type;private boolean isLend;public Book(String name, String author, int price, String type) {this.name name;this.author author;this.price price;this.type type;}//并不需要将是否借出作为参数因为每一本书在增添的时候都默认没有借出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 isLend() {return isLend;}public void setLend(boolean lend) {isLend lend;}public String toString() {return book{ 书名 name 作者 author 价格 price 类型 type 是否借出 (isLend?已借出:未借出) };}} 要设置一个书架里面建立一个数组来放书 private Book[] booksnew Book[10];private int usedSize;public BookList() {books[0]new Book(三国演义,罗贯中,10,小说);books[1]new Book(西游记,吴承恩,12,小说);books[2]new Book(红楼梦,曹雪芹,11,小说);this.usedSize 3;}public int getUsedSize() {return usedSize;}public void setUsedSize(int usedSize) {this.usedSize usedSize;}public Book[] getBooks() {return books;}public void setBooks(Book[] books) {this.books books;}public Book getBook(int pos){return books[pos];}public void setBook(Book book,int pos){books[pos]book;}public boolean isFull(){if(this.usedSizebooks.length){return true;}else {return false;}} } 设置主函数 public class Main {public static User login(){System.out.println(请输入你的名字);Scanner scannernew Scanner(System.in);String namescanner.nextLine();System.out.println(请输入你的身份1管理员 2普通用户);int choice scanner.nextInt();if (choice1){return new AdminUser(name);}else {return new NormalUser(name);}}public static void main(String[] args) {BookList bookListnew BookList();User userlogin();while(true) {int choice user.menu();user.doOperation(choice, bookList);}} 面对的有两类人一类为普通用户另一类为管理者建立两个类他们均继承User这个类因为这个User这个类不用实现对象所以为一个抽象类 public abstract class User {private String name;IOperation [] iOperationsnew IOperation[]{};public User(String name) {this.name name;}public abstract int menu();public void doOperation(int choice, BookList bookList){this.iOperations[choice].work(bookList);}} public class AdminUser extends User{public AdminUser(String name) {super(name);this.iOperationsnew IOperation[]{new ExitSystem(),new FindBook(),new AddBook(),new DelBook(),new ShowBook()};}public int menu(){System.out.println(********管理员菜单**********);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(**************************);System.out.println(请输入你操作);Scanner scannernew Scanner(System.in);int choicescanner.nextInt();return choice;} } public class NormalUser extends User {public NormalUser(String name) {super(name);this.iOperationsnew IOperation[]{new ExitSystem(),new FindBook(),new LendBook(),new ReturnBook()};}public int menu(){System.out.println(********普通用户菜单*********);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);Scanner scannernew Scanner(System.in);int choicescanner.nextInt();return choice;}} 实现各个功能 public interface IOperation {void work(BookList bookList); } 新增图书 public class AddBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(新增图书);if (bookList.isFull()true){System.out.println(满了不能放);return;}System.out.println(请输入新增图书的书名);Scanner scannernew Scanner(System.in);String bookNamescanner.nextLine();System.out.println(请输入新增书的作者);String authorscanner.nextLine();System.out.println(请输入新增书的价格);int pricescanner.nextInt();scanner.nextLine();System.out.println(请输入新增书的类型);String typescanner.nextLine();Book booknew Book(bookName,author,price,type);int currentbookList.getUsedSize();bookList.setBook(book,current);bookList.setUsedSize(current1);System.out.println(新增图书成功);} }删除图书 public class DelBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(删除图书);System.out.println(请输入要删除的书名);Scanner scannernew Scanner(System.in);String bookNamescanner.nextLine();int currentSize bookList.getUsedSize();int pos-1;int i 0;for (; i currentSize ; i) {Book bookbookList.getBook(i);if(book.getName().equals(bookName)){System.out.println(找到这本书开始删除);posi;break;}}if(icurrentSize){System.out.println(没有找到这本书);return;}for (int j pos; j currentSize-1 ; j) {Book bookbookList.getBook(j1);bookList.setBook(book,j);}bookList.setUsedSize(currentSize-1);bookList.setBook(null,currentSize-1);System.out.println(删除成功);} }退出系统 public class ExitSystem implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(退出系统);for (int i 0; i bookList.getUsedSize(); i) {bookList.setBook(null,i);}System.exit(0);} } 查找图书 public class FindBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(查找图书);System.out.println(请输入要查找的书名);Scanner scannernew Scanner(System.in);String bookNamescanner.nextLine();int currentSize bookList.getUsedSize();for (int i 0; i currentSize ; i) {Book bookbookList.getBook(i);if(book.getName().equals(bookName)){System.out.println(找到了这本书);System.out.println(book);return;}}System.out.println(没有找到这本书);} }借书 public class LendBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(借书);System.out.println(请输入要借阅的书名);Scanner scannernew Scanner(System.in);String bookNamescanner.nextLine();int currentSize bookList.getUsedSize();for (int i 0; i currentSize ; i) {Book bookbookList.getBook(i);if(book.getName().equals(bookName)){book.setLend(true);System.out.println(借阅成功);return;}}System.out.println(借阅失败);} } 归还图书 public class ReturnBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(ReturnBook);System.out.println(请输入要归还的书名);Scanner scannernew Scanner(System.in);String bookNamescanner.nextLine();int currentSize bookList.getUsedSize();for (int i 0; i currentSize ; i) {Book bookbookList.getBook(i);if(book.getName().equals(bookName)){book.setLend(false);System.out.println(归还成功);return;}}System.out.println(归还失败);} }显示图书 public class ShowBook implements IOperation{Overridepublic void work(BookList bookList) {System.out.println(显示图书);int currentSize bookList.getUsedSize();for (int i 0; i currentSize ; i) {Book bookbookList.getBook(i);System.out.println(book);}} }