Java基础课程设计——DVD管理器
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<dvdList.length;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<dvdList.length;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<dvdList.length;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<dvdList.length;j++){ //后面的书依次前移
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<dvdList.length;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<dvdList.length;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();
}
}