管理器（模拟）"/>
接口实现 图书管理器（模拟）
直接放代码
+package User;
+
+import operation.*;
+
+import java.util.Scanner;
+
+//管理用户
+public class AdminUser extends User {
+ public AdminUser(String name) {
+ super(name);
+//实现接口数组IOPeration
+ this.ioPerations=new IOPeration[] {
+ new ExitOperation(),
+ new FindOperation(),
+ new AddOperation(),
+ new DeleteOperation(),
+ new DisplayOperation()
+
+
+ };
+
+ }
+
+ public int menu() {
+ System.out.println("\n");
+ System.out.println("您好管理员[" + this.name + "]欢迎来到图书管理系统");
+ System.out.println("1.《查找书籍》");
+ System.out.println("2.《新增书籍》");
+ System.out.println("3.《删除书籍》");
+ System.out.println("4.《显示书籍》");
+ System.out.println("0.《退出系统》");
+ System.out.println("\n");
+ System.out.print("选择：");
+ Scanner sca=new Scanner(System.in);
+ int choice=sca.nextInt();
+ System.out.println("\n");
+ return choice;
+ }
+}
diff --git a/src/User/NormaIUser.java b/src/User/NormaIUser.java
new file mode 100644
index 0000000..3c578b2
--- /dev/null
+++ b/src/User/NormaIUser.java
@@ -0,0 +1,40 @@
+package User;
+
+import operation.*;
+
+import java.util.Scanner;
+
+//普通用户
+public class NormaIUser extends User{
+
+ public NormaIUser(String name) {
+ super(name);
+ //实现接口数组IOPeration
+ this.ioPerations=new IOPeration[] {
+ new ExitOperation(),
+ new FindOperation(),
+ new BorrowOperation(),
+ new ReturnOperation()
+
+
+ };
+ }
+
+ public int menu(){
+ System.out.println("\n");
+ System.out.println("尊敬的用户["+this.name+"]欢迎来到图书借阅系统");
+ System.out.println("1.《查找书籍》");
+ System.out.println("2.《借阅书籍》");
+ System.out.println("3.《归还书籍》");
+ System.out.println("0.《退出系统》");
+ System.out.println("\n");
+ System.out.print("选择：");
+ Scanner sca=new Scanner(System.in);
+ int choice=sca.nextInt();
+
+ System.out.println("\n");
+ return choice;
+
+ }
+}
+
diff --git a/src/User/User.java b/src/User/User.java
new file mode 100644
index 0000000..2d933b8
--- /dev/null
+++ b/src/User/User.java
@@ -0,0 +1,29 @@
+package User;
+
+import book.BookList;
+
+import operation.IOPeration;
+
+public abstract class User {
+
+ protected String name;
+
+
+/对子类的动态绑定name方法
+
+
+ public IOPeration[] ioPerations;
+
+
+ public User(String name ){
+ this.name=name;
+
+ }
+
+ public abstract int menu();
+
+public void doOperation(int choice,BookList bookList){
+ ioPerations[choice].work(bookList);
+}
+
+}
diff --git a/src/User/UserExit.java b/src/User/UserExit.java
new file mode 100644
index 0000000..6370574
--- /dev/null
+++ b/src/User/UserExit.java
@@ -0,0 +1,25 @@
+package User;
+
+import operation.*;
+
+import java.util.Scanner;
+
+//普通用户
+public class UserExit extends User{
+
+ public UserExit(String name) {
+ super(name);
+ //实现接口数组IOPeration
+ this.ioPerations=new IOPeration[] {
+ new ExitOperation()
+ };
+ }
+
+ public int menu(){
+
+ System.out.println("[输入有误]");
+ System.out.println(" ");
+ int choice=0;
+ return choice;
+ }
+}
\ No newline at end of file
diff --git a/src/book/Book.java b/src/book/Book.java
new file mode 100644
index 0000000..20eba0d
--- /dev/null
+++ b/src/book/Book.java
@@ -0,0 +1,79 @@
+package book;
+
+public class Book {
+ private String name;//书名
+
+ private String author;//作者
+
+ private int price;//价格
+
+private String type;//类型
+
+private boolean isBOrr;//判断是否被借阅
+
+ /// //book的构造方法
+ public Book(String name, String author, int price, String type) {
+ this.name = name;
+ this.author = author;
+ this.price = price;
+ this.type = type;
+ }
+ /// //提供get和set
+ 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 double 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 isBOrr() {
+ return isBOrr;
+ }
+
+ public void setBOrr(boolean BOrr) {
+ isBOrr = BOrr;
+ }
+
+ /// //提供toString打印Book
+ @Override
+ public String toString() {
+ return "| 库存：("+
+ "名称《" + name + "》"+
+ " 作者[" + author + "]"+
+ " 价格[" + price +"]"+
+ " 类别[" + type + "]"+
+ ((isBOrr==true)?" 已借出":" 未借出") +
+ // " 状态'=" + isBOrr +
+ ") |";
+ }
+
+}
diff --git a/src/book/BookList.java b/src/book/BookList.java
new file mode 100644
index 0000000..c497095
--- /dev/null
+++ b/src/book/BookList.java
@@ -0,0 +1,34 @@
+package book;
+
+public class BookList {
+ /
+private Book[] books=new Book[10];//构思一个书架数组可放十本书籍
+
+private int usedSize;
+/ //数组中放了几本书
+ public BookList(){
+ books[0]=new Book("斗罗大陆","唐家三少",58,"小说");
+
+ books[1]=new Book("斗破苍穹","天蚕土豆",58,"小说");
+
+ books[2]=new Book("盗墓笔记","南派三叔",58,"小说");
+ this.usedSize=3;
+ }
+ /
+ public int getUsedSize() { //给usedSize提供get获取数组当中元素的个数
+ return usedSize;
+ }
+
+ public void setUsedSize(int usedSize) {//给usedSize提供set设置数组当中元素的个数
+ this.usedSize = usedSize;
+ }
+
+/
+ public Book getPos(int pos){ //获取books书的下标
+ return books [pos];
+ }
+
+ public void setBooks(int pos,Book book){ //给books的[pos]下标放置书
+ books[pos]=book;
+ }
+}
diff --git a/src/main.java b/src/main.java
new file mode 100644
index 0000000..1faecc4
--- /dev/null
+++ b/src/main.java
@@ -0,0 +1,48 @@
+import User.AdminUser;
+import User.NormaIUser;
+import User.UserExit;
+import User.User;
+import book.BookList;
+
+
+
+
+import java.util.Scanner;
+
+public class main {
+
+ public static User login() {
+ System.out.print("请输入您的姓名 ：");
+ Scanner scan = new Scanner(System.in);
+ String name = scan.nextLine();
+ System.out.println("\n");
+ System.out.println("请输入你的身份:[（1）管理员] 或 [(2)用户]");
+ int choice = scan.nextInt();
+ if (choice>=0&&choice<=3) {
+ if (choice == 1) {
+ return new AdminUser(name);
+ } else if (choice==2){
+ return new NormaIUser(name);
+
+ }
+
+ }
+
+ return new UserExit(name);
+
+ }
+
+ public static void main(String[] args) { //User引用了那个对象
+
+ BookList bookList=new BookList();
+ User user= login();
+
+ while (true) {
+ int choice = user.menu();
+ user.doOperation(choice,bookList);
+
+
+ }
+ }
+
+}
diff --git a/src/operation/AddOperation.java b/src/operation/AddOperation.java
new file mode 100644
index 0000000..208a539
--- /dev/null
+++ b/src/operation/AddOperation.java
@@ -0,0 +1,37 @@
+package operation;
+
+
+import book.Book;
+import book.BookList;
+
+import java.util.Scanner;
+
+public class AddOperation implements IOPeration {//定义一个Add添加图书
+
+
+ @Override
+ public void work(BookList bookList){
+ System.out.println("[新增书籍]");
+
+ System.out.print("请输入书籍名称:");
+ Scanner scanner=new Scanner(System.in);
+ String name=scanner.nextLine();
+ System.out.print("请输入书籍作者:");
+ String author=scanner.nextLine();
+ System.out.print("请输入书籍类型:");
+ String type=scanner.nextLine();
+ System.out.print("请输入书籍价格:");
+ int price=scanner.nextInt();
+
+
+ Book book=new Book(name,author,price,type);
+
+ int crSize=bookList.getUsedSize();
+ bookList.setBooks(crSize,book);
+
+ bookList.setUsedSize(crSize+1);//调用BookList让数组+1
+
+ System.out.println("\n[添加成功！]");
+ }
+
+}
diff --git a/src/operation/BorrowOperation.java b/src/operation/BorrowOperation.java
new file mode 100644
index 0000000..1339559
--- /dev/null
+++ b/src/operation/BorrowOperation.java
@@ -0,0 +1,29 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+import java.util.Scanner;
+
+public class BorrowOperation implements IOPeration {
+ public void work(BookList bookList){
+ System.out.println("[借阅图书]");
+
+ System.out.print("请输入书籍名称:");
+ Scanner scanner=new Scanner(System.in);
+ String name=scanner.nextLine();
+ int crSize=bookList.getUsedSize();
+ for (int i=0;i<crSize;i++) {
+ Book book = bookList.getPos(i);
+ if (book.getName().equals(name)){
+
+ book.setBOrr(true);
+ System.out.println("\n\n");
+ System.out.println("[借阅成功]");
+ return;
+ }
+ }
+ System.out.println("\n\n");
+ System.out.println("[借阅失败]:没有这本书籍!");
+ }
+}
diff --git a/src/operation/DeleteOperation.java b/src/operation/DeleteOperation.java
new file mode 100644
index 0000000..80df862
--- /dev/null
+++ b/src/operation/DeleteOperation.java
@@ -0,0 +1,40 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+import java.util.Scanner;
+
+public class DeleteOperation implements IOPeration{
+ public void work(BookList bookList){
+ System.out.println("[删除图书]");
+ System.out.print("请输入书籍名称:");
+ Scanner scanner=new Scanner(System.in);
+ String name=scanner.nextLine();
+ int idx=0;
+ int crSize=bookList.getUsedSize();
+ int i=0;
+ for (i=0;i<crSize;i++){
+ Book book=bookList.getPos(i);
+ if (book.getName().equals(name)){
+
+ idx=i;
+ break;
+ }
+ }
+ if (i==crSize){
+ System.out.println("\n\n");
+ System.out.println("[删除失败]:没有这本书籍!");
+ return ;
+ }
+ for (int j=idx;j<crSize-1;j++){
+ Book book= bookList.getPos(j+1);
+ bookList.setBooks(j,book);
+ }
+ bookList.setBooks(crSize-1,null);
+
+ bookList.setUsedSize(crSize-1);
+ System.out.println("\n\n");
+ System.out.println("[删除成功]");
+ }
+}
diff --git a/src/operation/DisplayOperation.java b/src/operation/DisplayOperation.java
new file mode 100644
index 0000000..d9bc46c
--- /dev/null
+++ b/src/operation/DisplayOperation.java
@@ -0,0 +1,21 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+public class DisplayOperation implements IOPeration {
+ public void work(BookList bookList){
+ System.out.println("[显示成功]");
+ System.out.println(" --------------------------------------------------------------");
+ int crSize=bookList.getUsedSize();
+ for (int i=0;i<crSize;i++){
+ Book book=bookList.getPos(i);
+
+ System.out.println(book);
+
+ }
+ System.out.println(" --------------------------------------------------------------");
+ System.out.println("\n");
+ }
+
+}
diff --git a/src/operation/ExitOperation.java b/src/operation/ExitOperation.java
new file mode 100644
index 0000000..a18bfcf
--- /dev/null
+++ b/src/operation/ExitOperation.java
@@ -0,0 +1,15 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+public class ExitOperation implements IOPeration {
+ public void work(BookList bookList){
+ System.out.println("[退出系统]");
+ for (int i=0;i<bookList.getUsedSize();i++){
+ bookList.setBooks(i,null);
+
+ }
+ System.exit(0);
+ }
+}
diff --git a/src/operation/FindOperation.java b/src/operation/FindOperation.java
new file mode 100644
index 0000000..afe97f9
--- /dev/null
+++ b/src/operation/FindOperation.java
@@ -0,0 +1,29 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+import java.util.Scanner;
+
+public class FindOperation implements IOPeration {
+ public void work(BookList bookList){
+ System.out.println("[查找图书]");
+
+ System.out.print("请输入书籍名称:");
+ Scanner scanner=new Scanner(System.in);
+ String name=scanner.nextLine();
+ int crSize=bookList.getUsedSize();
+ for (int i=0;i<crSize;i++){
+ Book book=bookList.getPos(i);
+if (book.getName().equals(name)){
+ System.out.println("\n\n");
+ System.out.println("[查找成功]："+book);
+ return;
+}
+
+
+ }
+ System.out.println("\n\n");
+ System.out.println("[查找失败]:没有这本书籍!");
+ }
+}
diff --git a/src/operation/IOPeration.java b/src/operation/IOPeration.java
new file mode 100644
index 0000000..af6f8c2
--- /dev/null
+++ b/src/operation/IOPeration.java
@@ -0,0 +1,9 @@
+package operation;
+
+import book.BookList;
+//实现接口IO链接所有方法
+public interface IOPeration {
+
+ void work(BookList bookList);
+
+}
diff --git a/src/operation/ReturnOperation.java b/src/operation/ReturnOperation.java
new file mode 100644
index 0000000..188fad3
--- /dev/null
+++ b/src/operation/ReturnOperation.java
@@ -0,0 +1,28 @@
+package operation;
+
+import book.Book;
+import book.BookList;
+
+import java.util.Scanner;
+
+public class ReturnOperation implements IOPeration {
+ public void work(BookList bookList){
+ System.out.println("[归还图书]");
+ System.out.print("请输入书籍名称:");
+ Scanner scanner=new Scanner(System.in);
+ String name=scanner.nextLine();
+ int crSize=bookList.getUsedSize();
+ for (int i=0;i<crSize;i++) {
+ Book book = bookList.getPos(i);
+ if (book.getName().equals(name)){
+
+ book.setBOrr(false);
+ System.out.println("\n\n");
+ System.out.println("[归还成功]");
+ return;
+ }
+ }
+ System.out.println("\n\n");
+ System.out.println("[归还失败]:没有这本书籍!");
+ }
+}部分实现效果
gitee: .git //链接
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接口实现 图书管理器（模拟）
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