一、DVD管理器项目介绍
基于java的DVD管理器实现，功能如下：新增DVD，查看DVD，删除DVD，借出DVD，归还DVD，退出DVD
二、代码实现
1、创建三个类
DVD：存放DVD属性
DVDManager：用来实现DVD管理器的功能
Test：测试运行DVD管理器
2.DVD类代码
package com.java17;
public class DVD {
//书名
String name;
//借出次数
int count;
//图书借出状态
String status="可借";
//借出日期
String data = "";
}
3.DVDManager类代码
package com.java17;
import java.util.Scanner;
public class DvdManager {
//存储DVD
DVD[] dvdList = new DVD[50];
Scanner sc = new Scanner(System.in);
//初始化数据
public void initial(){
dvdList[0] = new DVD();
dvdList[0].name = "水浒传";
dvdList[0].count = 1;
dvdList[0].status = "借出";
dvdList[1] = new DVD();
dvdList[1].name = "三国演义";
dvdList[1].count = 7;
dvdList[1].status = "可借";
dvdList[2] = new DVD();
dvdList[2].name = "西游记";
dvdList[2].count = 6;
dvdList[2].status = "可借";
}
//显示菜单
public void startMenu(){
System.out.println("欢迎进入迷你DVD管理系统");
System.out.println("---------------------------------");
System.out.println("0:借出排行榜");
System.out.println("1：新增");
System.out.println("2：查看");
System.out.println("3：删除");
System.out.println("4：借出");
System.out.println("5：归还");
System.out.println("6：退出");
System.out.println("---------------------------------");
System.out.println("请选择：");
int num = sc.nextInt();
switch (num){
case 0:
System.out.println("------>排行榜");
break;
case 1:
System.out.println("------>新增");
addDVD();
break;
case 2:
System.out.println("------>查看");
showList();
break;
case 3:
System.out.println("------>删除");
deleteDVD();
break;
case 4:
System.out.println("------>借出");
borrrowDVD();
break;
case 5:
System.out.println("------>归还");
returnDVD();
break;
case 6:
System.out.println("------>退出");
breakDVD();
break;
default:
System.out.println("输入有误！！！");
break;
}
}
//新增
public void addDVD(){
DVD d = new DVD();
System.out.println("请输入添加书籍名称：");
d.name =sc.next();
for(int i=0;i if (dvdList[i]==null){ dvdList[i] = d; System.out.println("添加成功！！！"); break; } } returnMenu(); } //查看 public void showList() { System.out.println("序号\t\t名称\t\t\t状态\t\t借出日期\t\t借出次数"); for (int i=0;i DVD d = dvdList[i]; if (d!=null){ System.out.println((i+1)+"\t\t"+d.name+"\t\t"+d.status+"\t\t"+d.data+"\t\t\t"+d.count); }else { break; } } returnMenu(); } //删除 public void deleteDVD() { DVD d = new DVD(); System.out.println("请输入删除的DVD名称："); d.name = sc.next(); boolean flag = false; for(int i=0;i if (dvdList[i] != null) { if (dvdList[i].name.equals(d.name)){ 找到删除位置 flag = true; if (dvdList[i].status =="可借"){ //可借状态，可以删除 for (int j=i+1;j if(dvdList[j] == null){ //如果该书正好是最后一个 dvdList[j-1] = null; System.out.println("删除成功！！！"); break; } else { dvdList[j-1] = dvdList[j]; System.out.println("删除成功！！！"); } } } else { System.out.println(dvdList[i].name+"为借出状态，不可删除！"); } } } } if (flag == false) { System.out.println("该DVD不存在，请输入合法书名"); deleteDVD(); } else { returnMenu(); } } //借出 public void borrrowDVD(){ System.out.println("请输入需要借的书："); String name = sc.next(); System.out.println("请输入要归还的日期："); String data = sc.next(); boolean flag = false; for (int i=0;i if (dvdList[i] != null){ if (dvdList[i].name.equals(name)){ flag = true; if(dvdList[i].status == "可借"){ dvdList[i].status="借出"; dvdList[i].data= data; System.out.println("借出成功！！！"); break; } else { System.out.println("已借出，不可借阅！！！"); } } } } if (flag == false){ System.out.println("书名错误,请重新输入："); borrrowDVD(); } else returnMenu(); } //归还 public void returnDVD(){ System.out.println("请输入需要归还的书："); DVD d = new DVD(); d.name = sc.next(); boolean flag = false; for(int i=0;i if(dvdList[i] != null){ if (dvdList[i].name.equals(d.name)){ //找到了归还的书籍位置 flag = true; dvdList[i].status = "可借"; dvdList[i].count ++; } } } if (flag == false){ System.out.println("书籍名称错误,请重新输入："); returnDVD(); } else { System.out.println("归还成功！！！"); returnMenu(); } } public void breakDVD(){ System.out.println("已退出"); } //返回 public void returnMenu() { System.out.println("输入0返回:"); int num = sc.nextInt(); if(num == 0) startMenu(); else System.out.println("输入有误！！！"); } } 4.Test类代码 package com.java17; public class Test { public static void main(String[] args) { DvdManager dv = new DvdManager(); dv.initial(); dv.startMenu(); } } 推荐文章
您阅读本篇文章共花了：
发表评论