迷你DVD管理系统

import java.util.Scanner;public class Test {
public static void main(String [] args){
Scanner input = new Scanner(System.in);
/*
* 借出状态、名称、日期、借出次数
*/
int index = -1;
boolean [] status = new boolean [7];//借出状态
String [] names = new String [7];//名称
int [] data = new int [7];//日期
int [] account = new int [7];//次数status [0] = false;
names [0] = "罗马假日";
data [0] = 1;
account [0] = 15;status [1] = false;
names [1] = "风声鹤唳";
data [1] = 0;
account [1] = 12;status [2] = false;
names [2] = "浪漫满屋";
data [2] = 0;
account [2] = 30;
String name;
int time;
boolean exit = false;
boolean isZero;
boolean isRight;//借书时间是否正确
do{
System.out.println("欢迎使用迷你DVD管理器");
System.out.println("---------------------------------");
System.out.println("1.新增DVD");
System.out.println("2.查看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：");
int choose = input.nextInt();
switch(choose){
case 1:
System.out.println("--->新增DVD");
for(int i = 0;i<names.length;i++){
if(names [i] ==null){
index = i;
break;
}
}
if(index!=-1){
System.out.print("请输入DVD名称：");
names [index] = input.next();
System.out.println("新增《"+names[index]+"》成功！");
}
break;
case 2:
System.out.println("--->查看DVD");
System.out.println("序号\t状态\t名称\t\t借出日期\t借出次数");
for(int i = 0;i<names.length;i++){
if(names [i] ==null){
index = i;
break;
}
}
for(int i=0;i<index;i++){
String x;
if(status[i] == true){
x = "已借出";
}else{
x = "可借";
}
System.out.println((i+1)+"\t"+x+"\t《"+names[i]+"》\t"+data [i]+"日"+"\t"+account [i]+"次");
}
break;
case 3:
System.out.println("--->删除DVD");
System.out.print("请输入DVD名称：");
name = input.next();
for(int i = 0;i<names.length;i++){
if(name.equals(names[i])){
index = i;
break;
}
}
for(int i=index;i<names.length-1;i++){
names [i] = names[i+1];
status [i] = status[i+1];
data [i] = data[i+1];
account [i] = account [i+1];
}
//names [name.length()-1] = null;
System.out.println("删除《"+name+"》成功！");
break;case 4:
System.out.println("--->借出DVD");
System.out.print("请输入DVD的名称：");
name = input.next();
for(int i = 0;i<names.length;i++){
if(names[i].equals(name)){
index = i;
break;
}else{
index = -1;
}
}
if(index ==-1){
System.out.println("没有找到匹配信息");
}else{
if(status [index] ==true){
System.out.println("《"+name +"》已被借出！");
}else{
status [index] = true;
do{
System.out.print("请输入借出日期：");
time = input.nextInt();
if(time<1||time>31){
isRight = false;
}else{
isRight = true;
data [index] =time;
}
}while(!isRight);
account [index]++;
}
}
break;
case 5:
boolean isfind5 = false ;
System.out.println("--->归还DVD");
System.out.print("请输入DVD名称：");
name = input.next();
for(int i = 0;i<names.length;i++){
if(names [i] ==null){
index = i;
break;
}
}
for(int i = 0;i<=index;i++){
if(name.equals(names [i])){
if(status [i]==true){
do{
System.out.println("请输入归还日期：");
time = input.nextInt();
if(time<31||time>data [i]){
System.out.println("归还《"+name+"》成功！");
System.out.println("借出日期是："+data [i]);
System.out.println("归还日期是："+time);
System.out.println("应付租金（元）："+(time - data[i]));
isRight = true;
}else{
isRight = false;
System.out.println("归还日期不能小于借出日期；一个月只有31天！");
}
}while(!isRight);
isfind5 = true;
break;
}else{
System.out.println("该DVD没有被借出！无法进行归还操作！");
isfind5 = true;
break;
}
}else{
isfind5 = false;
}
}
if(!isfind5){
System.out.println("没有找到匹配的信息！");
break;
}
break;
case 6:
System.out.println("退出DVD...");
exit =true;
return;
default :
System.out.println("输入错误，请重新输入");
}System.out.println("**************************");do{
System.out.print("输入0返回：");
if(0!= input.nextInt()){
isZero = false;
}else{
isZero = true;
}
}while(!isZero);}while(!exit);
}
}