2023年迷你DVD管理器JAVA.doc

迷你DVD管理器java 实 验 报 告 课程名称：面向对象信息系统开发 实 验：期中大作业 班 级：02 学生姓名：李康 序 号：34 学 号：20231060261 专 业：电子信息工程 指导教师：高莲 学 期：2023-2023学年春季学期 成 绩： 云南大学信息学院 请用Java编程语言编写一个迷你DVD管理器，实现功能具体如下：x新增DVD x查看DVD x删除DVD x借出DVD x归还DVD 说明: 1、DVD相关信息如下：DVD的名称、是否可以借出，借出时间，租金每天多少钱、借出次数。 2、程序开始时，对数组进行初给化：3、编写采单，实现功能选择，用控制语句实现: 4、DVD借出后请计算租金：5、根据每张碟的借出次数对DVD进行排序并输出。 源代码： 1. package dvd; import java.util.Scanner; /xx x x @author d x/ public class DVD implements add,back,delete,lend,look{ Scanner input = new Scanner(System.in); private String name; private String yesorno; private int money; private int days; private int times; private int nowdays; private String result; DVD() { } DVD(String name,String yesorno,int money,int days,int times,int nowdays,String result) { this.name=name; this.yesorno=yesorno; this.money=money; this.days=days; this.times=times; this.nowdays=nowdays; this.result=result; } public void getadd() { System.out.print(“请输入该DVD名称：“); this.name = input.nextLine(); System.out.print(“请输入是否可以租赁：〔“yes〞or“no〞)“); this.yesorno = input.nextLine(); if(“yes“.equals(this.yesorno)) { System.out.print(“请输入租赁一天的费用〔元〕：“); this.money = input.nextInt(); this.days =0; this.result=“no“; } this.times =0; } public void getback() { if(“yes“.equals(this.result)) { System.out.println(“归还成功“); this.result=“no“; } else System.out.println(“您未租赁该设备“); } public void getdelete() { this.name=null; this.yesorno=null; this.money=0; this.days=0; this.times=0; System.out.print(“删除成功“); } public void getlend() { if(“yes“.equals(this.yesorno)&&“no“.equals(this.result))//no未借出 { System.out.print(“请输入借用时间“); this.nowdays = input.nextInt(); System.out.println(“需要费用“+this.nowdaysxthis.money+“元“); this.result=“yes“; this.days=this.days+this.nowdays; this.times++; } else { System.out.println(“该DVD不允许借出或已经借出“); } } public int copy() { return this.times; } public void getlook() { System.out.println(“该DVD的名称为“+this.name); if(! “yes“.equals(this.yesorno)) System.out.println(“该DVD不能借出“); else { System.out.println(“该DVD能借出“); System.out.println(“该DVD借出一天需要“+this.money+“元“); System.out.println(“该DVD的总借出时间为“+this.days+“天“); System.out.println(“该DVD的借出次数为“+this.times+“次“); } } @Override public void add() { throw new UnsupportedOperationException(“Not supported yet.“); //To change body of generated methods, choose Tools | Templates. } @Override public void back() { throw new UnsupportedOperationException(“Not supported yet.“); //To change body of generated methods, choose Tools | Templates. } @Override public void delete() { throw new UnsupportedOperationException(“Not supported yet.“); //To change body of generated methods, choose Tools | Templates. } @Override public void lend() { throw new UnsupportedOperationException(“Not supported yet.“); //To change body of generated methods, choose Tools | Templates. } @Override public void look() { throw new UnsupportedOperationException(“Not supported yet.“); //To change body of generated methods, choose Tools | Templates. } } 2. package dvd; /xx x x @author d x/ public interface add { void add(); } 3. package dvd; /xx x x @author d x/ public interface back { void back(); } 4. package dvd; /xx x x @author d x/ public interface delete { void delete(); } 5. package dvd; /xx x x @author d x/ public interface lend { void lend(); } 6. package dvd; /xx x x @author d x/ public interface look { void look(); } 7. package dvd; import java.util.Scanner; /xx x x @author d x/ public class test extends DVD{ public static void main(String[]args){ String work,panduan=“goon“; int temp,delete=0;//delete计算删除的DVD的个数 Scanner input = new Scanner(System.in); Scanner sc = new Scanner(System.in); System.out.print(“请输入DVD的个数：“); int num = input.nextInt(); DVD[] dvd= new DVD[100]; for(int i=0;i<100;i++)//对已定义的DVD进行初始化 { dvd[i]=new DVD(“aa“,“bb“,1,1,1,1,“cc“); } for(int i=0;i<num;i++)//对程序开始时定义的DVD进行增添信息的操作 { System.out.printf(“%d“,i+1); dvd[i].getadd(); } while(“goon“.equals(panduan)) { System.out.println(“您将要做什么？新增〔add〕，查看〔look〕，删除〔delete〕，借出〔lend〕，归还〔back〕“); work = sc.