這篇文章主要講解了“Java順序表怎么實現圖書管理系統”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“Java順序表怎么實現圖書管理系統”吧！
實現此項目的目的是鞏固并理解前面的知識點:類，抽象類，封裝，繼承，多態，接口等
管理端
??查閱書籍
??增加書籍
??刪除書籍
??打印書籍列表
??退出系統
用戶端
??查詢書籍
??借閱書籍
??歸還書籍
??打印書籍列表
??退出系統
1. 創建圖書類
圖書類中包含圖書的名稱，價格，類型，作者和是否被借出等信息，并生成構造方法，Getter()和Setter()方法，toString方法(注意成員變量應該盡可能使用private關鍵字修飾)
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 + '\'' +
", 狀態:" +((isBorrowed) ? "已借出":"未借出")+
'}';
}
}2. 創建圖書列表類
圖書列表類用于存放圖書，我們可以先在列表中初始化幾本書以方便后續測試
public class BookList {
private Book[] books = new Book[10];
private int usedSize;
public BookList(){
books[0] = new Book("三國演義",19,"小說","羅貫中");
books[1] = new Book("水滸傳",29,"小說","施耐庵");
books[2] = new Book("西游記",39,"小說","吳承恩");
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. 創建用戶類
創建一個用戶類并將其定義為抽象類，再創建普通用戶類和管理員類繼承于用戶類:
創建用戶類并定義為抽象類:
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;
}
}創建管理員用戶類:
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(){
System.out.println("===========管理員菜單============");
System.out.println("您好, 管理員 "+this.name+":");
System.out.println("歡迎來到圖書館!");
System.out.println("1. 查找圖書");
System.out.println("2. 新增圖書");
System.out.println("3. 顯示圖書");
System.out.println("4. 刪除圖書");
System.out.println("0. 退出系統");
System.out.println("=================================");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
return choice;
}
}創建普通用戶類:
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("===========普通用戶菜單============");
System.out.println("您好，用戶 "+this.name+":");
System.out.println("歡迎來到圖書館!");
System.out.println("1. 顯示圖書");
System.out.println("2. 查找圖書");
System.out.println("3. 借閱圖書");
System.out.println("4. 歸還圖書");
System.out.println("0. 退出系統");
System.out.println("=================================");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
return choice;
}
}4. 創建操作相關的類
首先創建一個接口用于實現多態:
public interface IOperation {
void work(BookList bookList);
}創建添加書籍類:
public class AddOperation implements IOperation{
public void work(BookList bookList) {
Scanner scanner = new Scanner(System.in);
System.out.println("請輸入圖書名稱:");
String name = scanner.nextLine();
System.out.println("請輸入價格:");
double price = scanner.nextDouble();
System.out.println("請輸入類型:");
String type = scanner.next();
System.out.println("請輸入作者:");
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("添加圖書成功!");
}
}創建查找書籍類:
public class FindOperation implements IOperation{
public void work(BookList bookList){
System.out.println("請輸入書名:");
Scanner scanner = new Scanner(System.in);
String name = scanner.next();
for(int i=0;i<bookList.getUsedSize();i++){
Book book = bookList.getBook(i);
if(name.equals(book.getName())){
System.out.println(book);
return;
}
}
System.out.println("找不到 《"+name+"》 這本書");
}
}創建借閱書籍類:
public class BorrowOperation implements IOperation {
public void work(BookList bookList) {
System.out.println("請輸入你要借閱的書籍:");
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("借閱成功!");
return;
}
if (name.equals(book.getName()) && book.isBorrowed()) {
System.out.println("該書籍已被借出");
return;
}
}
System.out.println("找不到你要借閱的書籍!");
}
}創建歸還書籍類:
public class ReturnOperation implements IOperation{
public void work(BookList bookList){
System.out.println("請輸入你要歸還的書籍:");
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(false);
System.out.println("歸還成功!");
return;
}
if(name.equals(book.getName())&& !book.isBorrowed()){
System.out.println("此書處于未借出狀態!");
return;
}
}
System.out.println("找不到你要歸還的書籍!");
}
}創建刪除書籍類:
public class DelOperation implements IOperation{
public void work(BookList bookList) {
System.out.println("請輸入要刪除的書名:");
Scanner scanner = new Scanner(System.in);
String name = scanner.next();
int index = 0;
int i = 0;
for(i=0;i<bookList.getUsedSize();i++){
Book book = bookList.getBook(i);
if(name.equals(book.getName())){
index = i;
break;
}
}
if(i>=bookList.getUsedSize()) {
System.out.println("找不到這本書");
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("刪除成功!");
}
}創建打印書籍列表類:
public class DisplayOperation implements IOperation{
public void work(BookList bookList){
int usedSize = bookList.getUsedSize();
for (int i=0;i<usedSize;i++){
Book book = bookList.getBook(i);
System.out.println(book);
}
}
}退出系統類:
public class ExitOperation implements IOperation{
public void work(BookList bookList){
System.out.println("退出系統!");
System.exit(0);
}
}主函數類:
public class Main {
public static User work(){
System.out.println("請輸入您的姓名:");
Scanner scanner = new Scanner(System.in);
String name = scanner.nextLine();
System.out.println("請輸入身份: 1-> 管理員登錄 0-> 用戶登錄");
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);
}
}
}感謝各位的閱讀，以上就是“Java順序表怎么實現圖書管理系統”的內容了，經過本文的學習后，相信大家對Java順序表怎么實現圖書管理系統這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！
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