目录
全部代码
/*一共有三个包*/
//User包
//User.java
package user;
import Book.BookList;
import Operation.IOparetion;
public abstract class User {
protected String name;
protected IOparetion[] iOparetions;
public User(String name) {
this.name = name;
}
public abstract int menu();
public void doIOparetion(int chioce, BookList bookList){
this.iOparetions[chioce].work(bookList);
}
}
//User包
//NormalUser.java
package user;
import Operation.*;
import java.util.Scanner;
public class NormalUser extends User{
public NormalUser(String name) {
super(name);
this.iOparetions= new IOparetion[] {
new ExitOparetion(),
new FindOparetion(),
new BorrowedOparetion(),
new ReturnOparetion()
};
}
@Override
public int menu() {
System.out.println("******管理员用户******");
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("******************");
System.out.println("请输入数字:");
Scanner scanner=new Scanner(System.in);
int choice= scanner.nextInt();
return choice;
}
}
//User包
//Administrators.java
package user;
import Operation.*;
import java.util.Scanner;
public class Administrators extends User {
public Administrators(String name) {
super(name);
this.iOparetions = new IOparetion[]{
new ExitOparetion(),
new FindOparetion(),
new AddOparetion(),
new DelOparetion(),
new ShowOparetion()
};
}
public int menu() {
System.out.println("******普通用户******");
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("******************");
System.out.println("请输入数字:");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
return choice;
}
}
//Book包
//Book.java
package Book;
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;
}
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;
}
@Override
public String toString() {
return "Book{" +
"name='" + name + '\'' +
", author='" + author + '\'' +
", price=" + price +
", type='" + type + '\'' +
(isLend==true?"已借出":"未借出")+
'}';
}
}
//Book包
//BookList.java
package Book;
public class BookList {
private Book[] book=new Book[10];
private int usedSize;
public Book getBook(int pos) {
return book[pos];
}
public void setBook(int pos,Book book) {
this.book[pos] = book;
}
public int getUsedSize() {
return usedSize;
}
public void setUsedSize(int usedSize) {
this.usedSize = usedSize;
}
public BookList() {
book[0]=new Book("西游记","吴承恩",19,"小说");
book[1]=new Book("三国演义","罗贯中",36,"小说");
book[2]=new Book("红楼梦","曹雪芹",13,"小说");
this.usedSize=3;
}
public boolean isFull(){
if(usedSize==book.length){
return true;
}return false;
}
}
//Oparetion包
//Ioparetion.java
package Operation;
import Book.BookList;
public interface IOparetion {
void work(BookList bookList);
}
//Oparetion包
//AddOparetion.java
package Operation;
import Book.Book;
import Book.BookList;
import java.util.Scanner;
public class AddOparetion implements IOparetion {
@Override
public void work(BookList bookList) {
Scanner scanner=new Scanner(System.in);
System.out.println("请输入你要添加的书籍名字");
String name=scanner.nextLine();
System.out.println("请输入作者的名字");
String author=scanner.nextLine();
System.out.println("请输入书的种类");
String type=scanner.nextLine();
System.out.println("请输入书的价格");
int price=scanner.nextInt();
Book book=new Book(name,author,price,type);
if(bookList.isFull()){
System.out.println("书架满了,借阅失败");
return;
}
bookList.setBook(bookList.getUsedSize(), book);
bookList.setUsedSize(bookList.getUsedSize()+1);
System.out.println("添加成功");
}
}
//Oparetion包
//BorrowedOparetion.java
package Operation;
import Book.BookList;
import java.util.Scanner;
public class BorrowedOparetion implements IOparetion{
@Override
public void work(BookList bookList) {
System.out.println("请输入你要找的书名");
Scanner scanner=new Scanner(System.in);
String name=scanner.nextLine();
for(int i=0;i<bookList.getUsedSize();i++){
if(name.equals(bookList.getBook(i).getName())){
bookList.getBook(i).setLend(true);
System.out.println("借阅成功");
return;
}
}
System.out.println("借阅失败");
}
}
//Oparetion包
//DelOparetion.java
package Operation;
import Book.BookList;
import java.util.Scanner;
public class DelOparetion implements IOparetion{
@Override
public void work(BookList bookList) {
System.out.println("请输入你要删除的书籍名字");
Scanner scanner=new Scanner(System.in);
String s=scanner.nextLine();
int pos=-1;
int i=0;
for (;i<bookList.getUsedSize();i++){
if(s.equals(bookList.getBook(i))){
pos=i;
}
if(i>=bookList.getUsedSize()){
System.out.println("没有你要找的书");
return;
}
}for(int j=i;i<bookList.getUsedSize()-1;i++){
bookList.setBook(j,bookList.getBook(j+1));
}
bookList.setBook(bookList.getUsedSize(), null);
bookList.setUsedSize(bookList.getUsedSize()-1);
System.out.println("删除成功");
}
}
//Oparetion包
//ExitOparetion.java
package Operation;
import Book.BookList;
public class ExitOparetion implements IOparetion {
@Override
public void work(BookList bookList) {
System.out.println("退出系统中....");
for(int i=0;i<bookList.getUsedSize()-1;i++){
bookList.setBook(i,null);
}
System.exit(0);
}
}
//Oparetion包
//FindOparetion.java
package Operation;
import Book.BookList;
import java.util.Scanner;
public class FindOparetion implements IOparetion{
@Override
public void work(BookList bookList) {
System.out.println("请输入你要找的书名");
Scanner scanner=new Scanner(System.in);
String name=scanner.nextLine();
for(int i=0;i<bookList.getUsedSize();i++){
if(name.equals(bookList.getBook(i).getName())){
System.out.println("找到了,下标为:"+i);
System.out.println(bookList.getBook(i));
return;
}
}
System.out.println("没找到");
}
}
//Oparetion包
//ReturnOparetion.java
package Operation;
import Book.BookList;
import java.util.Scanner;
public class ReturnOparetion implements IOparetion{
@Override
public void work(BookList bookList) {
Scanner scanner=new Scanner(System.in);
System.out.println("请输入你要归还的书名");
String s=scanner.nextLine();
for (int i = 0; i < bookList.getUsedSize()-1; i++) {
if(s.equals(bookList.getBook(i).getName())){
bookList.getBook(i).setLend(false);
System.out.println("归还成功");
return;
}
}
System.out.println("归还失败,没有你要归还的书");
}
}
//Oparetion包
//ShowOparetion.java
package Operation;
import Book.BookList;
public class ShowOparetion implements IOparetion{
@Override
public void work(BookList bookList) {
for(int i=0;i<bookList.getUsedSize();i++){
System.out.println(bookList.getBook(i));
}
}
}
Main类
public class Main {
public static User login(){
Scanner scanner=new Scanner(System.in);
System.out.println("请输入你的名字");
String name=scanner.nextLine();
System.out.println("请输入你的身份:1.普通用户 2.管理员用户");
int choice =scanner.nextInt();
if(choice==1){
NormalUser normalUser=new NormalUser(name);
return normalUser;
}else{
Administrators administrators=new Administrators(name);
return administrators;
}
}
public static void main(String[] args) {
BookList bookList=new BookList();
User user=login();
while (true){
int ret=user.menu();
user.doIOparetion(ret,bookList);
}
}
}
User类
package user;
import Book.BookList;
import Operation.IOparetion;
public abstract class User {
protected String name;
protected IOparetion[] iOparetions;
public User(String name) {
this.name = name;
}
public abstract int menu();
public void doIOparetion(int chioce, BookList bookList){
this.iOparetions[chioce].work(bookList);
}
}
BookList类
package Book;
public class BookList {
private Book[] book=new Book[10];
private int usedSize;
public Book getBook(int pos) {
return book[pos];
}
public void setBook(int pos,Book book) {
this.book[pos] = book;
}
public int getUsedSize() {
return usedSize;
}
public void setUsedSize(int usedSize) {
this.usedSize = usedSize;
}
public BookList() {
book[0]=new Book("西游记","吴承恩",19,"小说");
book[1]=new Book("三国演义","罗贯中",36,"小说");
book[2]=new Book("红楼梦","曹雪芹",13,"小说");
this.usedSize=3;
}
public boolean isFull(){
if(usedSize==book.length){
return true;
}return false;
}
}
Book类
package Book;
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;
}
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;
}
@Override
public String toString() {
return "Book{" +
"name='" + name + '\'' +
", author='" + author + '\'' +
", price=" + price +
", type='" + type + '\'' +
(isLend==true?"已借出":"未借出")+
'}';
}
}
NormalUser类
package user;
import Operation.*;
import java.util.Scanner;
public class NormalUser extends User{
public NormalUser(String name) {
super(name);
this.iOparetions= new IOparetion[] {
new ExitOparetion(),
new FindOparetion(),
new BorrowedOparetion(),
new ReturnOparetion()
};
}
@Override
public int menu() {
System.out.println("******管理员用户******");
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("******************");
System.out.println("请输入数字:");
Scanner scanner=new Scanner(System.in);
int choice= scanner.nextInt();
return choice;
}
}