简易的ＤＶＤ管理器
//----------------简易版DVD
import java.util.*;
import java.text.SimpleDateFormat;
import java.text.ParseException;
//-----------------------------------数据集合----------------------------------
class DVDSet
{
String[] name = new String [50]; //---- DVD名称数组
int[] state = new int[50]; //---- DVD借出状态数组
String[] date = new String[50]; //---- DVD借出日期数组
int[] count = new int[50]; //-----DVD借出次数
}
//------------------------------数据管理类-------------------------------------------------
class DVDMgr
{
DVDSet DVD = new DVDSet(); //-----DVD对象
//-----------------------------------初始化三张DVD信息 ---------------------------
public void initial(){
DVD.name[0] = "罗马假日";
DVD.state[0] = 0;
DVD.date[0] = "2016-11-17";
DVD.count[0] = 1;
DVD.name[1] = "风声鹤唳";
DVD.state[1] = 1;
DVD.count[1] = 0;
DVD.name[2] = "浪漫满屋";
DVD.state[2] = 1;
DVD.count[2] = 0;
}
//-----------------------------------菜单的切换方法 ----------------------------------
public void startMenu(){
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");
System.out.println("7. 借出排行榜");
System.out.println("*******************************");
System.out.println("请选择你要查看的栏目：");
Scanner keyNum = new Scanner(System.in);
int choice = keyNum.nextInt();
switch(choice){
case 1:
System.out.println("----------->新增DVD~~~");
System.out.println("*******************************");
add();
break;
case 2:
System.out.println("----------->查看DVD~~~");
System.out.println("*******************************");
search();
break;
case 3:
System.out.println("----------->删除DVD~~~");
System.out.println("*******************************");
delete();
break;
case 4:
System.out.println("----------->借出DVD~~~");
System.out.println("*******************************");
lend();
break;
case 5:
System.out.println("----------->归还DVD~~~");
System.out.println("*******************************");
returnDVD();
break;
case 6:
System.out.println("----------->退出DVD~~~");
System.out.println("*******************************");
returnMain();
break;
case 7:
System.out.println("----------->DVD借出排行榜~~~");
System.out.println("*******************************");
list();
break;
default :
System.out.println("不怕神一样的对手，就怕猪一样的队友，程序重载中........");
break;
}
}
//-----------------------------------新增DVD方法------ -------------------------------
public void add(){
System.out.println("请输入你要新增的DVD信息：");
Scanner newName = new Scanner(System.in);
String addName = newName.next();
for ( int i = 0; i < DVD.name.length ; i++){
if (DVD.name[i] == null) {
DVD.name[i] = addName;
DVD.state[i] = 1;
System.out.println("书海无涯，回头是岸，《" + addName + "》兄弟你跑进来爪子嘛！！！");
break;
}
}
returnMain();
}
//-----------------------------------查看DVD方法------ -------------------------------
public void search(){
System.out.println("序号\t" + "状态\t\t" + "名称\t\t" + "借出日期");
for(int i = 0; i < DVD.name.length; i++){
if(DVD.name[i] == null){
break;
}else if(DVD.state[i] == 0){
System.out.println( ( i + 1) + "\t已借出\t\t" +"<<" + DVD.name[i] + ">>\t" + DVD.date[i]);
}else if(DVD.state[i] == 1){
System.out.println(( i + 1) + "\t可以借阅\t" + "<<" + DVD.name[i] + ">>");
}
}
returnMain();
}
//-----------------------------------删除DVD方法------ -------------------------------
public void delete(){
System.out.println("请输入你要删除的DVD：");
Scanner keyName = new Scanner(System.in);
String deleteName = keyName.next();
for(int i = 0; i < DVD.name.length; i ++){
if(DVD.name[i] != null && DVD.name[i].equalsIgnoreCase(deleteName) && DVD.state[i] == 1){
int j = i;
while(DVD.name[j+1] != null){
DVD.name[j] = DVD.name[j+1];
DVD.state[j] = DVD.state[j+1];
DVD.date[j] = DVD.date[j+1];
j++;
}
DVD.name[j]=null;
DVD.date[j]=null;
System.out.println("删除《"+ deleteName +"》成功！");
break;
}else if (DVD.name[i] != null && DVD.name[i].equalsIgnoreCase(deleteName) && DVD.state[i] == 0){
System.out.println("《"+ deleteName+"》宝贝儿是人家的，你想删都删不了！！！");
break;
}
}
returnMain();
}
//-----------------------------------借出DVD方法------ -------------------------------
public void lend(){
System.out.println("请输入你要借出的DVD：");
Scanner keyName = new Scanner(System.in);
String lendName = keyName.next();
for (int i = 0; i < DVD.name.length; i++){
if(DVD.name[i] == null){
System.out.println("读DVD不积极，借DVDDVD不理~~~");
break;
}else if (DVD.name[i].equals(lendName) && DVD.state[i] == 1){
System.out.println("终于找到你，还好我没放弃！！！");
DVD.state[i] = 0;
System.out.println("你输入DVD的借阅日期(年-月-日)：");
Scanner keyDate = new Scanner(System.in);
String lendDate = keyDate.next();
DVD.date[i] = lendDate;
System.out.println("《" + lendName + "》DVD借出成功！！！");
DVD.count[i]++;
break;
}else if (DVD.name[i].equals(lendName) && DVD.state[i] == 0){
System.out.println("借DVD不积极，脑壳有问题，《" + lendName + "《已被借别人借起跑了~~~~");
break;
}
}
returnMain();
}
//-----------------------------------归还DVD方法------ -------------------------------
public void returnDVD(){
String lendDate;
String returnDate;
System.out.println("请输入你要归还的DVD：");
Scanner keyName = new Scanner(System.in);
String returnName = keyName.next();
for(int i = 0; i < DVD.name.length; i++){
if (DVD.name[i].equals(returnName) && DVD.state[i] == 0){
System.out.println("有借有还，再借不难，小伙子来还DVD了~~~");
lendDate = DVD.date[i];
System.out.println("请输入你的归还日期（年-月-日）：");
Scanner keyDate = new Scanner(System.in);
returnDate = keyDate.next();
System.out.println("《" + returnName + "》归还成功！！！");
DVD.state[i] = 1;
DVD.date[i] = null;
System.out.println("借DVD期间你所要支付的租金为（Charge）：" + charge(lendDate,returnDate) + "$");
break;
}else if (DVD.name[i].equals(returnName) && DVD.state[i] == 1){
System.out.println("这DVD在我这里，小伙子你在逗我吗？");
break;
}else if (DVD.name[i].equals(returnName) == false){
System.out.println("小屁孩，你是不是跑错地方了........站住，别跑~~~~~");
break;
}
}
returnMain();
}
//-------------日期计算租金
public long charge(String lendDate,String returnDate){
long charge = 0;
SimpleDateFormat SDF = new SimpleDateFormat("yyyy-MM-dd");
try {
Date LD = SDF.parse(lendDate);
Date RD = SDF.parse(returnDate);
charge=(RD.getTime()-LD.getTime())/(24*60*60*1000);
} catch (ParseException e) {
e.printStackTrace();
}
return charge;
}
//-----------------------------------返回主菜单方法 ----------------------------------
public void returnMain(){
Scanner input = new Scanner(System.in);
System.out.print("返回主菜单请输入-0-：");
if (input.nextInt() == 0){
startMenu();
}else{
System.out.println("输入错误，异常终止！！！");
returnMain();
}
}
//-----------------------------------DVD借出排行榜------ -----------------------------
public void list() {
String[] newDVDs = new String[100];
int[] newCounts = new int[100];
for(int i = 0; i < DVD.name.length; i++){
newDVDs[i] = DVD.name[i];
}
for(int i = 0; i < DVD.count.length; i++){
newCounts[i] = DVD.count[i];
}
for(int i = 0; i < newDVDs.length; i++){
if(newDVDs[i] == null){
break;
}
for(int j = i; j < newDVDs.length; j++){
if(newDVDs[j] == null){
break;
}
if(newCounts[i] < newCounts[j]){
int temp = newCounts[i];
newCounts[i] = newCounts[j];
newCounts[j] = temp;
String str = newDVDs[i];
newDVDs[i] = newDVDs[j];
newDVDs[j] = str;
}
}
}
System.out.println("-----------------------------------------");
System.out.println("次数\t名称");
for(int i = 0; i < newDVDs.length; i ++){
if(newDVDs[i] == null){
break;
}
System.out.println(newCounts[i] + "\t" + "<<" + newDVDs[i] + ">>");
}
System.out.println("-----------------------------------------");
returnMain();
}
}
class MiniDVD
{
public static void main(String[] args)
{
DVDMgr manger = new DVDMgr(); //----构造管理员对象
System.out.println("\n");
System.out.println("*******************************");
System.out.println("欢迎使用迷你DVD管理器");
System.out.println("*******************************");
manger.initial();
manger.startMenu();
}
}
