Java数组-图书管理系统

怼烎@ 2023-10-11 21:16 34阅读 0赞

**项目要求：**

1.  存储图书相关信息
2.  初始化两本书
3.  输出欢迎以及对图书的操作
4.  查看图书
5.  新增图书
6.  修改图书
7.  删除图书
8.  退出本系统

**图书类(Book)**

package com.xszx.ts;
    
    /**
     * @Author  杨 
     * @CreateDate 2023-03-19 9:52
     **/
    public class Book {
        private int id;
        private String name;
        private double price;
        private String author;
        private int snum;
    
        public int getId() {
            return id;
        }
    
        public void setId(int id) {
            this.id = id;
        }
    
        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 getAuthor() {
            return author;
        }
    
        public void setAuthor(String author) {
            this.author = author;
        }
    
        public int getSnum() {
            return snum;
        }
    
        public void setSnum(int snum) {
            this.snum = snum;
        }
    
        public Book() {
        }
    
        public Book(int id, String name, double price, String author, int snum) {
            this.id = id;
            this.name = name;
            this.price = price;
            this.author = author;
            this.snum = snum;
        }
    }

**功能类(BookTest)**

package com.xszx.ts;
    import java.util.Scanner;
    
    /**
     * @Author 杨 
     * @CreateDate 2023-03-19 9:56
     **/
    public class BookTest {
        static Scanner sc = new Scanner(System.in);
        static  Book[] books= new Book[6];
        public static void main(String[] args) {
            books[0]= new Book(1,"呐喊",30,"鲁迅",8);
            books[1]= new Book(2,"野草",20.5,"鲁迅",5);
    
            while (true){
                System.out.println("欢迎进入图书管理系统！");
                System.out.println("【1】查看图书【2】新增图书【3】修改图书【4】删除图书【5】退出系统");
                System.out.println("请选择要进行的操作：");
                int m = sc.nextInt();
                if (m == 1) {
                    selBook();
                }else if (m == 2) {
                    addBook();
                }else if (m == 3) {
                    updateBook();
                }else if (m == 4) {
                    delBook();
                }else if (m == 5) {
                    System.out.println("本次服务到此结束！");
                    break;
                }
            }
    
        }
    
        //查看图书
        private static void selBook() {
            for (int i = 0; i < books.length; i++) {
                if (books[i] != null) {
                    System.out.println("第"+(i+1)+"本书编号："+books[i].getId()+"\t"+
                            "书名："+books[i].getName()+"\t"+
                            "价格："+books[i].getPrice()+"\t"+
                            "作者："+books[i].getAuthor()+"\t"+
                            "数量："+books[i].getSnum());
                }
    
            }
        }
    
        //增加图书
        private static void addBook() {
            System.out.println("请输入要添加的位置：");
            int n= sc.nextInt();
            System.out.println("请输入要添加的图书编号：");
            int id =sc.nextInt();
            System.out.println("请输入要添加的图书名称：");
            String name = sc.next();
            System.out.println("请输入要添加的图书价格：");
            double price = sc.nextDouble();
            System.out.println("请输入要添加的图书作者：");
            String author = sc.next();
            System.out.println("请输入要添加的图书数量：");
            int snu= sc.nextInt();
            books[n-1]= new Book(id,name,price,author,snu);
        }
    
        //修改图书
        private static void updateBook() {
            System.out.println("请输入要修改的图书位置：");
            int n= sc.nextInt();
            System.out.println("本书编号："+books[n-1].getId()+"\t"+
                    "书名："+books[n-1].getName()+"\t"+
                    "价格："+books[n-1].getPrice()+"\t"+
                    "作者："+books[n-1].getAuthor()+"\t"+
                    "数量："+books[n-1].getSnum());
            System.out.println("请输入要添加的图书编号：");
            int id =sc.nextInt();
            System.out.println("请输入要添加的图书名称：");
            String name = sc.next();
            System.out.println("请输入要添加的图书价格：");
            double price = sc.nextDouble();
            System.out.println("请输入要添加的图书作者：");
            String author = sc.next();
            System.out.println("请输入要添加的图书数量：");
            int snu= sc.nextInt();
            books[n-1]= new Book(id,name,price,author,snu);
        }
    
        //删除图书
        private static void delBook() {
            System.out.println("请输入要删除的图书名称：");
            String name = sc.next();
            for (int i = 0; i < books.length; i++) {
                if (books[i] != null && books[i].getName().equals(name)) {
                    books[i] = new Book();
                }
            }
        }
    
    
    }