Java顺序表实现图书管理系统

Java顺序表实现图书管理系统

本文实例为大家分享了java顺序表实现图书管理系统的具体代码，供大家参考，具体内容如下

一、简介

实现此项目的目的是巩固并理解前面的知识点:类，抽象类，封装，继承，多态，接口等

二、核心需求

管理端

查阅书籍

  增加书籍

  删除书籍

  打印书籍列表

  退出系统

用户端

查询书籍

  借阅书籍

  归还书籍

  打印书籍列表

  退出系统

三、类的设计

1. 创建图书类

public class Book {

private String name;

private double price;

private String type;

private String author;

private boolean isBorrowed;

public Book(String name, double price, String type, String author) {

this.name = name;

this.price = price;

this.type = type;

this.author = author;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

public String getAuthor() {

return author;

}

public void setAuthor(String author) {

this.author = author;

}

public boolean isBorrowed() {

return isBorrowed;

}

public void setBorrowed(boolean borrowed) {

isBorrowed = borrowed;

}

@Override

public String toString() {

return "Book{" +

"name='" + name + '\'' +

", price=" + price +

", type='" + type + '\'' +

", author='" + author + '\'' +

", 状态:" +((isBorrowed) ? "已借出":"未借出")+

'}';

}

}

2. 创建图书列表类

图书列表类用于存放图书，我们可以先在列表中初始化几本书以方便后续测试

public class BookList {

private Book[] books = new Book[10];

private int usedSize;

public BookList(){

books[0] = new Book("三国演义",19,"小说","罗贯中");

books[1] = new Book("水浒传",29,"小说","施耐庵");

books[2] = new Book("西游记",39,"小说","吴承恩");

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 setBook(int pos,Book book) {

books[pos] = book;

}

}

3. 创建用户类

创建一个用户类并将其定义为抽象类，再创建普通用户类和管理员类继承于用户类:

创建用户类并定义为抽象类:

public abstract class User {

protected String name;

protected IOperation[] iOperations;

public abstract int menu();

public void doWork(int choice, BookList bookList){

iOperations[choice].work(bookList);

}

public User(String name) {

this.name = name;

}

}

创建管理员用户类:

public class AdminUser extends User{

public AdminUser(String name) {

super(name);

this.iOperations = new IOperation[]{

new ExitOperation(),

new FindOperation(),

new AddOperation(),

new DisplayOperation(),

new DelOperation()

};

}

@Override

public int menu(){

OkQXKXu System.out.println("===========管理员菜单============");

System.out.println("您好, 管理员 "+this.name+":");

System.out.println("欢迎来到图书馆!");

System.out.println("1. 查找图书");

System.out.println("2. 新增图书");

System.out.println("3. 显示图书");

System.out.println("4. 删除图书");

System.out.println("0. 退出系统");

System.out.println("=================================");

Scanner scanner = new Scanner(System.in);

int choice = scanner.nextInt();

return choice;

}

}

创建普通用户类:

public class NormalUser extends User{

public NormalUser(String name) {

super(name);

this.iOperations = new IOperation[]{

new ExitOperation(),

new DisplayOperation(),

new FindOperation(),

new BorrowOperation(),

new ReturnOperation(),

};

}

@Override

public int menu(){

System.out.println("===========普通用户菜单============");

System.out.println("您好，用户 "+this.name+":");

System.out.println("欢迎来到图书馆!");

System.out.println("1. 显示图书");

System.out.println("2. 查找图书");

System.out.println("3. 借阅图书");

System.out.println("4. 归还图书");

System.out.println("0. 退出系统");

System.out.println("=================================");

Scanner scanner = new Scanner(System.in);

int choice = scanner.nextInt();

return choice;

}

}

4. 创建操作相关的类

首先创建一个接口用于实现多态:

public interface IOperation {

void work(BookList bookList);

}

创建添加书籍类:

public class AddOperation implements IOperation{

public void work(BookList bookList) {

Scanner scanner = new Scanner(System.in);

System.out.println("请输入图书名称:");

String name = scanner.nextLine();

System.out.println("请输入价格:");

double price = scanner.nextDouble();

System.out.println("请输入类型:");

String type = scanner.next();

String author = scanner.next();

Book book = new Book(name,price,type,author);

int usedSize = bookList.getUsedSize();

bookList.setBook(usedSize,book);

bookList.setUsedSize(++usedSize);

System.out.println("添加图书成功!");

}

}

创建查找书籍类:

public class FindOperation implements IOperation{

public void work(BookList bookList){

System.out.println("请输入书名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

for(int i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

System.out.println(book);

return;

}

}

System.out.println("找不到 《"+name+"》 这本书");

}

}

创建借阅书籍类:

public class BorrowOperation implements IOperation {

public void work(BookList bookList) {

System.out.println("请输入你要借阅的书籍:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int i = 0;

for (i = 0; i < bookList.getUsedSize() - 1; i++) {

Book book = bookList.getBook(i);

if (name.equals(book.getName()) && !book.isBorrowed()) {

book.setBorrowed(true);

System.out.println("借阅成功!");

return;

}

if (name.equals(book.getName()) && book.isBorrowed()) {

System.out.println("该书籍已被借出");

return;

}

}

System.out.println("找不到你要借阅的书籍!");

}

}

创建归还书籍类:

public class ReturnOperation implements IOperation{

public void whttp://ork(BookList bookList){

System.out.println("请输入你要归还的书籍:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int i=0;

for(i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.OkQXKXugetName())&& book.isBorrowed()){

book.setBorrowed(false);

System.out.println("归还成功!");

return;

}

if(name.equals(book.getName())&& !book.isBorrowed()){

System.out.println("此书处于未借出状态!");

return;

}

}

System.out.println("找不到你要归还的书籍!");

}

}

创建删除书籍类:

public class DelOperation implements IOperation{

public void work(BookList bookList) {

System.out.println("请输入要删除的书名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int index = 0;

int i = 0;

for(i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

index = i;

break;

}

}

if(i>=bookList.getUsedSize()) {

System.out.println("找不到这本书");

return;

}

int j = 0;

for (j = index;j< bookList.getUsedSize()-1;j++){

Book book = bookList.getBook(j+1);

bookList.setBook(j,book);

}

bookList.setBook(bookList.getUsedSize()-1, null);

bookList.setUsedSize(bookList.getUsedSize()-1);

System.out.println("删除成功!");

}

}

创建打印书籍列表类:

public class DisplayOperation implements IOperation{

public void work(BookList bookList){

int usedSize = bookList.getUsedSize();

for (int i=0;i

Book book = bookList.getBook(i);

System.out.println(book);

}

}

}

退出系统类:

public class ExitOperation implements IOperation{

public void work(BookList bookList){

System.out.println("退出系统!");

System.exit(0);

}

}

主函数类:

public class Main {

public static User work(){

System.out.println("请输入您的姓名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.nextLine();

System.out.println("请输入身份: 1-> 管理员登录 0-> 用户登录");

int choice = scanner.nextInt();

if(choice==1){

return new AdminUser(name);

}

return new NormalUser(name);

}

public static void main(String[] args) {

BookList bookList = new BookList();

User user = work();

while (true) {

int choice = user.menu();

user.doWork(choice, bookList);

}

}

}

The end

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

System.out.println(book);

return;

}

}

System.out.println("找不到 《"+name+"》 这本书");

}

}

创建借阅书籍类:

public class BorrowOperation implements IOperation {

public void work(BookList bookList) {

System.out.println("请输入你要借阅的书籍:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int i = 0;

for (i = 0; i < bookList.getUsedSize() - 1; i++) {

Book book = bookList.getBook(i);

if (name.equals(book.getName()) && !book.isBorrowed()) {

book.setBorrowed(true);

System.out.println("借阅成功!");

return;

}

if (name.equals(book.getName()) && book.isBorrowed()) {

System.out.println("该书籍已被借出");

return;

}

}

System.out.println("找不到你要借阅的书籍!");

}

}

创建归还书籍类:

public class ReturnOperation implements IOperation{

public void whttp://ork(BookList bookList){

System.out.println("请输入你要归还的书籍:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int i=0;

for(i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.OkQXKXugetName())&& book.isBorrowed()){

book.setBorrowed(false);

System.out.println("归还成功!");

return;

}

if(name.equals(book.getName())&& !book.isBorrowed()){

System.out.println("此书处于未借出状态!");

return;

}

}

System.out.println("找不到你要归还的书籍!");

}

}

创建删除书籍类:

public class DelOperation implements IOperation{

public void work(BookList bookList) {

System.out.println("请输入要删除的书名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int index = 0;

int i = 0;

for(i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

index = i;

break;

}

}

if(i>=bookList.getUsedSize()) {

System.out.println("找不到这本书");

return;

}

int j = 0;

for (j = index;j< bookList.getUsedSize()-1;j++){

Book book = bookList.getBook(j+1);

bookList.setBook(j,book);

}

bookList.setBook(bookList.getUsedSize()-1, null);

bookList.setUsedSize(bookList.getUsedSize()-1);

System.out.println("删除成功!");

}

}

创建打印书籍列表类:

public class DisplayOperation implements IOperation{

public void work(BookList bookList){

int usedSize = bookList.getUsedSize();

for (int i=0;i

Book book = bookList.getBook(i);

System.out.println(book);

}

}

}

退出系统类:

public class ExitOperation implements IOperation{

public void work(BookList bookList){

System.out.println("退出系统!");

System.exit(0);

}

}

主函数类:

public class Main {

public static User work(){

System.out.println("请输入您的姓名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.nextLine();

System.out.println("请输入身份: 1-> 管理员登录 0-> 用户登录");

int choice = scanner.nextInt();

if(choice==1){

return new AdminUser(name);

}

return new NormalUser(name);

}

public static void main(String[] args) {

BookList bookList = new BookList();

User user = work();

while (true) {

int choice = user.menu();

user.doWork(choice, bookList);

}

}

}

The end

Book book = bookList.getBook(i);

if(name.equals(book.OkQXKXugetName())&& book.isBorrowed()){

book.setBorrowed(false);

System.out.println("归还成功!");

return;

}

if(name.equals(book.getName())&& !book.isBorrowed()){

System.out.println("此书处于未借出状态!");

return;

}

}

System.out.println("找不到你要归还的书籍!");

}

}

创建删除书籍类:

public class DelOperation implements IOperation{

public void work(BookList bookList) {

System.out.println("请输入要删除的书名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.next();

int index = 0;

int i = 0;

for(i=0;i

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

index = i;

break;

}

}

if(i>=bookList.getUsedSize()) {

System.out.println("找不到这本书");

return;

}

int j = 0;

for (j = index;j< bookList.getUsedSize()-1;j++){

Book book = bookList.getBook(j+1);

bookList.setBook(j,book);

}

bookList.setBook(bookList.getUsedSize()-1, null);

bookList.setUsedSize(bookList.getUsedSize()-1);

System.out.println("删除成功!");

}

}

创建打印书籍列表类:

public class DisplayOperation implements IOperation{

public void work(BookList bookList){

int usedSize = bookList.getUsedSize();

for (int i=0;i

Book book = bookList.getBook(i);

System.out.println(book);

}

}

}

退出系统类:

public class ExitOperation implements IOperation{

public void work(BookList bookList){

System.out.println("退出系统!");

System.exit(0);

}

}

主函数类:

public class Main {

public static User work(){

System.out.println("请输入您的姓名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.nextLine();

System.out.println("请输入身份: 1-> 管理员登录 0-> 用户登录");

int choice = scanner.nextInt();

if(choice==1){

return new AdminUser(name);

}

return new NormalUser(name);

}

public static void main(String[] args) {

BookList bookList = new BookList();

User user = work();

while (true) {

int choice = user.menu();

user.doWork(choice, bookList);

}

}

}

The end

Book book = bookList.getBook(i);

if(name.equals(book.getName())){

index = i;

break;

}

}

if(i>=bookList.getUsedSize()) {

System.out.println("找不到这本书");

return;

}

int j = 0;

for (j = index;j< bookList.getUsedSize()-1;j++){

Book book = bookList.getBook(j+1);

bookList.setBook(j,book);

}

bookList.setBook(bookList.getUsedSize()-1, null);

bookList.setUsedSize(bookList.getUsedSize()-1);

System.out.println("删除成功!");

}

}

创建打印书籍列表类:

public class DisplayOperation implements IOperation{

public void work(BookList bookList){

int usedSize = bookList.getUsedSize();

for (int i=0;i

Book book = bookList.getBook(i);

System.out.println(book);

}

}

}

退出系统类:

public class ExitOperation implements IOperation{

public void work(BookList bookList){

System.out.println("退出系统!");

System.exit(0);

}

}

主函数类:

public class Main {

public static User work(){

System.out.println("请输入您的姓名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.nextLine();

System.out.println("请输入身份: 1-> 管理员登录 0-> 用户登录");

int choice = scanner.nextInt();

if(choice==1){

return new AdminUser(name);

}

return new NormalUser(name);

}

public static void main(String[] args) {

BookList bookList = new BookList();

User user = work();

while (true) {

int choice = user.menu();

user.doWork(choice, bookList);

}

}

}

The end

Book book = bookList.getBook(i);

System.out.println(book);

}

}

}

退出系统类:

public class ExitOperation implements IOperation{

public void work(BookList bookList){

System.out.println("退出系统!");

System.exit(0);

}

}

主函数类:

public class Main {

public static User work(){

System.out.println("请输入您的姓名:");

Scanner scanner = new Scanner(System.in);

String name = scanner.nextLine();

System.out.println("请输入身份: 1-> 管理员登录 0-> 用户登录");

int choice = scanner.nextInt();

if(choice==1){

return new AdminUser(name);

}

return new NormalUser(name);

}

public static void main(String[] args) {

BookList bookList = new BookList();

User user = work();

while (true) {

int choice = user.menu();

user.doWork(choice, bookList);

}

}

}

The end

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