idea-java 图书管理系统

详细步骤概述

步骤一：创建类Tushuxitong

package edu.tuhsu;
/**

* @author WYP

* @date 2021/4/14 9:10

*/

public class Tushuxitong {

/**

    * 图书类

    */

    // 名字  状态  借出日期  次数

    public Stringname;    //图书名称

    public int state;  //图书状态          0已借出1可借

    public Stringdate; //借出日期

    public double number; // 库存

    /*

    图书信息展示*/

    public void dayin(int index) {

System.out.println(index +"\t\t\t\t" +name +"\t\t\t\t" +state +"\t\t\t\t" +date +"\t\t\t\t" +number);

    }

public void setBook(String mingzi, int zhuangtai, String riqi, double kucun) {

this.name = mingzi;

        this.state = zhuangtai;

        this.date = riqi;

        this.number = kucun;

    }

}

步骤二：创建类Tushuxitong2

package edu.tuhsu;

/**

* @author WYP

* @date 2021/4/14 9:22

*/

public class Tushuxitong2 {

Tushuxitong[]books =new Tushuxitong[50];

}

步骤三：创建类Tushuxitong3
Tushuxitong03中含有initial、startMenu。

package edu.tuhsu;

import java.util.Scanner;

/**

* @author WYP

* @date 2021/4/14 9:22

*/

public class Tushuxitong3 {

Tushuxitong2bookSet =new Tushuxitong2();

    /**

    * 初始化

    */

    public void initial() {

Tushuxitong java =new Tushuxitong();

        java.setBook("《java基础》", 1, "1990/2/3", 20);

        Tushuxitong renyue =new Tushuxitong();

        renyue.setBook("《软件技术》", 1, null, 0);

        Tushuxitong jichu =new Tushuxitong();

        jichu.setBook("《程序语言基础》", 1, null, 0);

        bookSet.books[0] = java;

        bookSet.books[1] = renyue;

        bookSet.books[2] = jichu;

    }

/*

    菜单切换*/

    public void startMenu(){

boolean flag =true ;

        do {

System.out.println("欢迎使用图书管理系统");

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

            System.out.println("1. 新增图书");

            System.out.println("2. 查看图书");

            System.out.println("3. 删除图书");

            System.out.println("4. 借出图书");

            System.out.println("5. 归还图书");

            System.out.println("6. 退出");

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

            System.out.println("请选择：");

            Scanner scanner =new Scanner(System.in);

            int choice = scanner.nextInt();

            switch (choice){

case 1:

System.out.println("新增图书");

                    zeng();

break;

                case 2:

System.out.println("查看图书");

                    kan();

break;

                case 3:

System.out.println("删除图书");

                    shanchu();

break;

                case 4:

System.out.println("借出图书");

                    jiechu();

break;

                case 5:

System.out.println("归还图书");

                    guihuan();

break;

                case 6:

System.out.println("谢 谢 使 用 !");

                default:

System.out.println("输入不符合要求请重新选择");

            }

}while (flag);

    }

private void kan() {

System.out.println("编号 \t\t\t  名称 \t\t\t\t 状态 \t\t\t 借出日期 \t\t\t 库存");

        for (int i =0; i

if (this.bookSet.books[i] !=null) {

this.bookSet.books[i].dayin(i +1);

            }

}

}

private void zeng() {

Scanner scanner =new Scanner(System.in);

        System.out.println("请输入图书的名称：");

        String name = scanner.next();

        System.out.println("请输入库存：");

        int number = scanner.nextInt();

        Tushuxitong newBook =new Tushuxitong();

        newBook.setBook(name, newBook.state, newBook.date, newBook.number);

        for (int i =0; i

if (bookSet.books[i] ==null) {

bookSet.books[i] = newBook;  //把新建的对象放在数组中的第一个空位置

                bookSet.books[i].number = number; //库存

                System.out.println("添加成功");

                break; //后续的空位置直接跳过

            }

}

}

private void guihuan () {

System.out.println("请输入要归还书的名称");

        Scanner scanner =new Scanner(System.in);

        String huan = scanner.next();

        boolean flag =true;  //判断是否归还成功

        System.out.println("请输入归还日期");

        String riqi = scanner.next();

        for (int i =0; i

if (bookSet.books[i].name.equals(huan) &&bookSet.books[i].state ==0) {// 在书的状态为一借出的状态下可以归还

                bookSet.books[i].state =1;

                bookSet.books[i].date = riqi;

            }else {

System.out.println("归还成功");

                flag =true;

break;

            }

}

}

private void jiechu () {

System.out.println("请输入要借书的名称");

        Scanner scanner =new Scanner(System.in);

        String jie = scanner.next();

        boolean flag =true;

        System.out.println("请输入借书的日期");

        String riqi = scanner.next();

        for (int i =0; i

if (bookSet.books[i] !=null &&bookSet.books[i].name.equals(jie)) {

if (bookSet.books[i].state ==1) {//在书的状态为1（可借）可以借出

                    bookSet.books[i].state =0; //借出后把书的状态改为0（不可借）

                    flag =true;

                    bookSet.books[i].date = riqi; //日期改为现在借书的日期

                }

break;

            }

}

if (flag) {

System.out.println("借出成功");

        }else {

System.out.println("借出失败");

        }

}

private void shanchu () {

System.out.println("请输入删除图书的编号：");

        Scanner scanner =new Scanner(System.in);

        int bianhao = scanner.nextInt();

        boolean flag =true;

        for (int i =0; i

if (bookSet.books[i] !=null && (i +1) == bianhao) {

if (bookSet.books[i].state !=0) {

int j = i;

                    while (bookSet.books[j +1] !=null) {

//后面元素向前移动

                        bookSet.books[j] =bookSet.books[j +1];

                        j++;

                    }

bookSet.books[j] =null;

                    flag =true;

                    break;  //后面元素没必要执行

                }else {

System.out.println("图书为借出状态不能删除");

                    flag =true;

                }

}else {

flag =false;

            }

}

if (flag) {

System.out.println("删除成功");

        }else {

System.out.println("删除失败");

        }

}

}

步骤四：创建测试类Tushuxitong4

package edu.tuhsu;

/**
 * @author WYP
 * @date 2021/4/14 9:23
 */
public class Tushuxitong4 {
    public static void main(String[] args) {
        Tushuxitong3 bookManage = new Tushuxitong3();
        bookManage.initial();
        bookManage.startMenu();
    }
}

运行结果显示：

image.png