迷你DVD管理器java

实 验 报 告

课程名称：面象信息系统开发
实 验：期中作业
班 级：02
学生姓名：李康
序 号：34
学 号：20181060261
专 业：电子信息工程
指导教师：高莲
学 期：20192020学年春季学期
成 绩：






云南学信息学院






请Java编程语言编写迷DVD理器实现功具体：
*新增DVD
*查DVD
*删DVD
*出DVD
*DVD
说明 1DVD相关信息：
DVD名称否出出时间租金天少钱出次数
2程序开始时数组进行初化：
3编写采单实现功选择控制语句实现
4DVD出请计算租金：
5根张碟出次数DVD进行排序输出
源代码：







1
package dvd

import javautilScanner



**
*
* @author d
*
public class DVD implements addbackdeletelendlook{
Scanner input new Scanner(Systemin)
private String name
private String yesorno
private int money
private int days
private int times
private int nowdays
private String result
DVD()
{
}
DVD(String nameString yesornoint moneyint daysint timesint nowdaysString result)
{
thisnamename
thisyesornoyesorno
thismoneymoney
thisdaysdays
thistimestimes
thisnowdaysnowdays
thisresultresult
}
public void getadd() {
Systemoutprint(请输入该DVD名称：)
thisname inputnextLine()
Systemoutprint(请输入否租赁：（yesorno))
thisyesorno inputnextLine()
if(yesequals(thisyesorno))
{
Systemoutprint(请输入租赁天费（元）：)
thismoney inputnextInt()
thisdays 0
thisresultno
}
thistimes 0
}
public void getback() {

if(yesequals(thisresult))
{
Systemoutprintln(成功)
thisresultno
}
else
Systemoutprintln(您未租赁该设备)
}
public void getdelete() {
thisnamenull
thisyesornonull
thismoney0
thisdays0
thistimes0
Systemoutprint(删成功)
}
public void getlend() {
if(yesequals(thisyesorno)&&noequals(thisresult))no未出
{
Systemoutprint(请输入时间)
thisnowdays inputnextInt()
Systemoutprintln(需费+thisnowdays*thismoney+元)
thisresultyes
thisdaysthisdays+thisnowdays
thistimes++
}
else
{
Systemoutprintln(该DVD允许出已出)
}
}
public int copy()
{
return thistimes
}
public void getlook()
{
Systemoutprintln(该DVD名称+thisname)
if( yesequals(thisyesorno))
Systemoutprintln(该DVD出)
else
{
Systemoutprintln(该DVD出)
Systemoutprintln(该DVD出天需+thismoney+元)
Systemoutprintln(该DVD总出时间+thisdays+天)
Systemoutprintln(该DVD出次数+thistimes+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

**
*
* @author d
*
public interface add
{
void add()
}

3
package dvd

**
*
* @author d
*

public interface back
{
void back()
}

4
package dvd

**
*
* @author d
*
public interface delete
{
void delete()
}

5
package dvd

**
*
* @author d
*
public interface lend
{
void lend()
}

6
package dvd

**
*
* @author d
*
public interface look
{
void look()
}

7
package dvd

import javautilScanner

**
*
* @author d
*
public class test extends DVD{
public static void main(String[]args){
String workpanduangoon
int tempdelete0delete计算删DVD数
Scanner input new Scanner(Systemin)
Scanner sc new Scanner(Systemin)
Systemoutprint(请输入DVD数：)
int num inputnextInt()
DVD[] dvd new DVD[100]
for(int i0i<100i++)已定义DVD进行初始化
{
dvd[i]new DVD(aabb1111cc)
}
for(int i0i {
Systemoutprintf(di+1)
dvd[i]getadd()
}
while(goonequals(panduan))
{
Systemoutprintln(您做什？新增（add）查（look）删（delete）出（lend）（back）)
work scnextLine()
if(null work)
switch (work) {
case add
num++
dvd[num1]getadd()
break
case look
Systemoutprint(您想第张DVD？)
int num1 inputnextInt()
dvd[num11]getlook()
break
case delete
Systemoutprint(您想删第张DVD？)
int num2 inputnextInt()
dvd[num21]getdelete()
delete++计算删DVD数
break
case lend
Systemoutprint(您想第张DVD？)
int num3 inputnextInt()
dvd[num31]getlend()
break
case back
Systemoutprint(您想第张DVD？)
int num4 inputnextInt()
dvd[num41]getback()
break
default
Systemoutprintln(错误)
}
Systemoutprint(您继续进行操作？继续（goon）退出（out）)
panduan scnextLine()
if(goonequals(panduan))
break
}
int[] array new int[num]
for(int i0i array[i]dvd[i]copy()
for(int i0i {
for(int j0j {
if(array[j] {
temparray[j]
array[j]array[j+1]
array[j+1]temp
}
}
}
Systemoutprint(出次数排序)
for(int i0i Systemoutprint(array[i]+ )输出剩余DVD出次数排序
}
}
调试程：



























实验总结：
1 接口常量抽象方法集合没变量方法实现
2 接口(interface)种特殊抽象类种抽象类里面方法抽象方法抽象类属性（成员变量）声明成public static final 类型 属性名样默认声明成public static final里面成员变量公静态改变
3 实现接口类必须实现接口描述方法否必须声明抽象类外Java中接口类型声明变量成空指针绑定接口实现象

流程图：










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