一个DVD管理系统

1:DVD类

package com;

public class Dvd {

String name;

String zhuangTai;

int time;

int ciShu;

}

2：DVD管理类

package com;

import java.util.Scanner;

public class DvdManage {

Scanner input = new Scanner(System.in);

Dvd dvd[] =new Dvd[6];

//查看DVD

public void chaKanDvd(){

System.out.println("名称\t"+"状态\t"+"借阅时间\t"+"借阅次数\t");

for(int i=0;i

System.out.println(dvd[i].name+"\t"+dvd[i].zhuangTai+"\t"+dvd[i].time+"\t"+dvd[i].ciShu);

}

}

//新增DVD

public boolean addDvd(Dvd x){

boolean b=false;

for(int i=0;i

if(dvd[i]==x){

System.out.println("新增失败，该dvd已经存在!");

break;

}

if(dvd[i]==null){

System.out.println("新增dvd成功!");

b=true;

dvd[i].name=x.name;

dvd[i].zhuangTai="未借阅";

dvd[i].ciShu=0;

}

if(dvd[5]!=null){

System.out.println("新增失败，dvd已满!");

break;

}

}

return b;

}

//删除DVD

public boolean deleteDvd(Dvd x){

boolean b=false;

for(int i=0;i

if(dvd[i].name==x.name){

dvd[i]=null;

b=true;

System.out.println("删除DVD成功!");

break;

}else{

System.out.println("该DVD不存在!");

}

}

return b;

}

//借阅DVD

public boolean jieYueDvd(Dvd x){

boolean b=false;

for(int i=0;i

if(dvd[i].name==x.name&&dvd[i].zhuangTai.equals("未借阅")){

dvd[i].zhuangTai="已借阅";

dvd[i].ciShu=dvd[i].ciShu+1;

System.out.print("请输入借阅时间:");

dvd[i].time=input.nextInt();

System.out.println("借阅成功!");

b=true;

break;

}

if(dvd[i].name==x.name&&dvd[i].zhuangTai.equals("已借阅")){

System.out.println("抱歉，该DVD已被借阅!");

}else{

System.out.println("该DVD不存在!");

}

}

return b;

}

//归还DVD

public boolean guiHuanDvd(Dvd x){

boolean b=false;

for(int i=0;i

if(dvd[i].name==x.name){

dvd[i].zhuangTai="未借阅";

dvd[i].time=0;

System.out.println("归还DVD成功!");

b=true;

break;

}

else{

System.out.println("该DVD不存在!");

}

}

return b;

}

}

3:DVD测试类

package com;

import java.util.Scanner;

public class DvdText {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

DvdManage dvd = new DvdManage();

System.out.println("欢迎使用迷你DVD管理器");

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

System.out.println("1.查看DVD");

System.out.println("2.新增DVD");

System.out.println("3.删除DVD");

System.out.println("4.借出DVD");

System.out.println("5.归还DVD");

System.out.println("6.退出DVD");

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

System.out.print("请选择功能:");

O:while(true){

int i = input.nextInt();

switch (i) {

case 1:

dvd.chaKanDvd();

break;

case 2:

Dvd dvd1=new Dvd();

dvd1.name=input.next();

dvd.addDvd(dvd1);

break;

case 3:

Dvd dvd2= new Dvd();

dvd2.name=input.next();

dvd.deleteDvd(dvd2);

break;

case 4:

Dvd dvd3 = new Dvd();

dvd3.name=input.next();

dvd.jieYueDvd(dvd3);

break;

case 5:

Dvd dvd4=new Dvd();

dvd4.name=input.next();

dvd.guiHuanDvd(dvd4);

break;

case 6:

System.out.println("感谢使用!");

break O;

default:

break;

}

}

}

}

写完了 ，代码没语法上的错误，可是DVD管理的6个功能却实现不了，看了好久，有没有兄弟愿意找下问题 。。