直接上代碼
import java.util.*;
import java.text.SimpleDateFormat;
import java.text.ParseException;
class DVDSet
{
String[] name =new String[50];
int[] state = new int[50];
String[] date = new String[50];
int[] count = new int[50];
}
class DVDMgr
{
DVDSet dvd = new DVDSet();
public void initial(){
dvd.count[0] = 1;
dvd.name[0] = "百年孤獨(dú)";
dvd.state[0] = 0;
dvd.date[0] = "2012-2-1";
dvd.name[1] = "三國(guó)演義";
dvd.state[1] = 1;
dvd.name[2] = "三體";
dvd.state[2] = 1;
}
public void startMenu(){
Scanner reader = new Scanner(System.in);
System.out.println("噢哈哈~歡迎使用迷你DVD管理器！?。?);
System.out.println("-----------------------------------------");
System.out.println("0.熱門(mén)排行榜");
System.out.println("1.新增DVD");
System.out.println("2.查看DVD");
System.out.println("3.刪除DVD");
System.out.println("4.借出DVD");
System.out.println("5.歸還DVD");
System.out.println("6.退出");
System.out.println("-----------------------------------------");
System.out.print("請(qǐng)選擇：");
int choice = reader.nextInt();
System.out.println();
switch (choice)
{
case 0:
show();
returnMain();
break;
case 1:
add();
returnMain();
break;
case 2:
check();
returnMain();
break;
case 3:
del();
returnMain();
break;
case 4:
borrow();
returnMain();
break;
case 5:
returnDvd();
returnMain();
break;
case 6:
System.out.println("有緣再會(huì)");
break;
default :
System.out.println("就內(nèi)6個(gè)數(shù)也能輸錯(cuò)？你還是別玩了");
break;
}
}
public void returnMain(){
Scanner reader = new Scanner(System.in);
System.out.print("輸入0返回主菜單:");
if(reader.nextInt() == 0){
startMenu();
}
else{
System.out.println("連個(gè)0都不會(huì)輸，你可長(zhǎng)點(diǎn)兒心吧！");
}
}
//各個(gè)功能方法
//排行榜
public void show(){
String[] newDvds = new String[50];
for(int i = 0; i < dvd.name.length; i++){
newDvds[i] = dvd.name[i];
}
int[] newCounts = new int[50];
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("次數(shù)\t\t名稱(chēng)");
for(int i = 0; i < newDvds.length; i ++){
if(newDvds[i] == null){
break;
}
System.out.println(newCounts[i] + "\t\t" + "<<" + newDvds[i] + ">>");
}
System.out.println("-----------------------------------------");
}
//1.新增
public void add(){
Scanner reader = new Scanner(System.in);
for(int i = 0; i < dvd.name.length; i++){
if(dvd.name[i] == null ){
System.out.println("請(qǐng)輸入要新增DVD的名字");
dvd.name[i] = reader.next();
dvd.state[i] = 1;
System.out.println("新增成功~");
break;
}
}
}
//2.查看
public void check(){
System.out.println("序號(hào)\t狀態(tài)\t名稱(chēng)\t\t借出日期");
for(int i = 0; i < dvd.name.length; i++){
if(dvd.name[i] == null){
break;
}
if (dvd.state[i] == 1)
{
System.out.println( i + "\t" + "可借" + "\t" + "<<" +dvd.name[i] + ">>" );
}
else {
System.out.println( i + "\t" + "不可借" + "? " + "<<" + dvd.name[i] + ">>" + "\t" + dvd.date[i]);
}
}
}
//3.刪除
public void del(){
Scanner reader = new Scanner(System.in);
System.out.println("請(qǐng)輸入要?jiǎng)h除DVD的名字");
String name = reader.next();
for(int i = 0; i < dvd.name.length; i++){
if(dvd.name[i] == null){
System.out.println("并沒(méi)有找到你所要?jiǎng)h除的DVD");
break;
}else if(dvd.name[i].equalsIgnoreCase(name)){
if(dvd.state[i] == 0){
System.out.println("<<" + name + ">>為借出狀態(tài)，不能刪除！" );
break;
}
else{
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("刪除《"+name+"》成功！");
break;
}
}
}
}
//4.借出
public void borrow(){
Scanner reader = new Scanner(System.in);
System.out.println("少年，你所追尋的是那張碟啊");
String name = reader.next();
for(int i = 0; i < dvd.name.length;i++){
if(dvd.name[i] == null){
System.out.println("少年郎，然而并沒(méi)有找到你想要的碟誒！");
break;
}
else if(dvd.name[i].equalsIgnoreCase(name)){
if(dvd.state[i] == 0){
System.out.println("少年郎，你要的碟已經(jīng)被借走了");
break;
}else{
dvd.state[i] = 0;
System.out.println("請(qǐng)輸入借出的日期 （年-月-日? 按照格式來(lái)啊魂淡）");
dvd.date[i] = reader.next();
dvd.count[i]++;
System.out.println("現(xiàn)在這張" + "<<" + dvd.name[i] + ">>" + "就是你的了~\n人類(lèi)的未來(lái)靠你了??！");
break;
}
}
}
}
//5歸還
public void returnDvd(){
Scanner reader = new Scanner(System.in);
System.out.println("哦？來(lái)還哪張碟子啊");
String name = reader.next();
for(int i = 0; i < dvd.name.length;i++){
if(dvd.name[i] == null){
System.out.println("小伙子 你是不是記錯(cuò)了？我們這兒原來(lái)沒(méi)這種片兒啊");
break;
}
if(dvd.name[i].equalsIgnoreCase(name)){
if(dvd.state[i] == 1){
System.out.println("這張珍藏版在我們倉(cāng)庫(kù)里好好放著呢? 你是不是記錯(cuò)了");
}else{
System.out.println("現(xiàn)在是什么時(shí)辰 （年-月-日）");
String newDate = reader.next();
System.out.println("歸還" + "<<" + name + ">>" + "成功");
System.out.println("借出日期為：" + dvd.date[i]);
System.out.println("歸還日期為：" + newDate);
System.out.println("應(yīng)付租金（元）" + charge(dvd.date[i],newDate));
dvd.state[i] = 1;
break;
}
}
}
}
//日期計(jì)算
public long charge(String dstr1,String dstr2){
long charge=0;
SimpleDateFormat sd=new SimpleDateFormat("yyyy-MM-dd");
try {
Date d1=sd.parse(dstr1);
Date d2=sd.parse(dstr2);
charge=(d2.getTime()-d1.getTime())/(24*60*60*1000);
} catch (ParseException e) {
e.printStackTrace();
}
return charge;
}
}
class? MiniDvd
{
public static void main(String[] args)
{
DVDMgr dm = new DVDMgr();
dm.initial();
dm.startMenu();
}
}
