java 编程中显示日期和时间的代码
可以直接通过jdk基本方法，获取到当前的时间
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Date date= new Date();//创建一个时间对象，获取到当前的时间
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置时间显示格式
String str = sdf.format(date);//将当前时间格式化为需要的类型
System.out.println(str);//输出结果
结果为：2015-11-06 13:53:54（实时）。
求用Java写的网上订房程序 要有酒店类 房间类 客户类 订房记录类 模拟一个人订房操作
酒店类
package fdsa;
public class Hotel {
private String hotelID;
private String hotelName;
private String hoteladdess;
public String getHotelID() {
return hotelID;
}
public void setHotelID(String hotelID) {
this.hotelID = hotelID;
}
public String getHotelName() {
return hotelName;
}
public void setHotelName(String hotelName) {
this.hotelName = hotelName;
}
public String getHoteladdess() {
return hoteladdess;
}
public void setHoteladdess(String hoteladdess) {
this.hoteladdess = hoteladdess;
}
public String getHotelPhone() {
return hotelPhone;
}
public void setHotelPhone(String hotelPhone) {
this.hotelPhone = hotelPhone;
}
private String hotelPhone;
}
客户类
public class Client{
private String clientName;
private String clientID;
public String getClientName() {
return clientName;
}
public void setClientName(String clientName) {
this.clientName = clientName;
}
public String getClientID() {
return clientID;
}
public void setClientID(String clientID) {
this.clientID = clientID;
}
}
房间类
public class Room{
private String roomID;
private Hotel hotelID;
public String getRoomID() {
return roomID;
}
public void setRoomID(String roomID) {
this.roomID = roomID;
}
public Hotel getHotelID() {
return hotelID;
}
public void setHotelID(Hotel hotelID) {
this.hotelID = hotelID;
}
public String getRoomAmount() {
return roomAmount;
}
public void setRoomAmount(String roomAmount) {
this.roomAmount = roomAmount;
}
private String roomAmount;
}
java面试题：酒店预订！
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("是否是会员？y/n");
String H = input.next();
System.out.println("请输入入住日期：");
System.out.println("例如2009-03-16");
String in = input.next();
System.out.println("请输离开日期：");
System.out.println("例如2009-03-16");
String out = input.next();
//String in = s.substring(5,15);
//String out = s.substring(15,26);
//System.out.println(in+" "+out);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c1 = Calendar.getInstance();
Calendar c2 = Calendar.getInstance();
try {
c1.setTime(sdf.parse(in));
c2.setTime(sdf.parse(out));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long time1 = c1.getTimeInMillis();
long time2 = c2.getTimeInMillis();
long tian = (time2-time1)/(1000*24*3600);
long tian1 = tian;
System.out.println("tian "+tian);
int week1 = c1.get(Calendar.DAY_OF_WEEK)-1;
//System.out.println(week1);
//int week2 = c2.get(Calendar.DAY_OF_WEEK)-1;
//System.out.println(week2);
int count = 0;
while(tian10){
if(week1 == 6 || week1==0){
count++;
}
if(week1==6){
week1 = 0;
week1--;
}
tian1--;
week1++;
}
System.out.println("count "+count);
long rujia;
long qitian;
long hanting;
if(H.equals("y")){
rujia = (tian-count)*80+count*80;
System.out.println("tian "+tian);
qitian = (tian-count)*110+count*50;
hanting = (tian-count)*100+count*40;
}else{
rujia = (tian-count)*110+count*90;
qitian = (tian-count)*160+count*60;
hanting = (tian-count)*220+count*150;
}
System.out.println("tian " + tian);
System.out.println("rujia "+rujia);
System.out.println("hanting "+hanting);
System.out.println("qitian "+qitian);
if(rujiaqitian rujiahanting){
System.out.println("如家");
}else if(qitianrujia qitianhanting){
System.out.println("七天");
}else if(hantingrujia hantingqitian){
System.out.println("汉庭");
}else if(hanting==rujia || hanting==qitian){
System.out.println("汉庭");
}else if(qitian==rujia qitianhanting){
System.out.println("七天");
}
}
我没怎么测试 自己测测吧 还有一些约束用户输入啥的 严谨性什么的
用面向对象思想实现一个酒店管理系统，具体要求如下：java
package jcon.com.help;
/**
* 顾客类
* @author Jcon
*
*/
public class Customer {
private String name;
private String date;
private int days;
public Customer(String name, String date, int days) {
super();
this.name = name;
this.date = date;
this.days = days;
}
@Override
public String toString() {
return "Customer [name=" + name + ", date=" + date + ", days=" + days
+ "]";
}
}
package jcon.com.help;
/**
* 房间类
* @author Jcon
*
*/
public class Room {
private int number;
private Customer customer;
private boolean isUse = false;//开始房间是空的
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
public Customer getCustomer() {
return customer;
}
public void setCustomer(Customer customer) {
this.customer = customer;
}
public boolean getIsUse() {
return isUse;
}
public void setIsUse(boolean isUse) {
this.isUse = isUse;
}
}
package jcon.com.help;
import java.util.HashMap;
import java.util.Map;
/**
* 酒店类
* @author Jcon
*
*/
public class Hote {
private int cengShu; //层楼
private int roomNumber; //每层楼房间数
public static MapInteger,Room rooms = new HashMapInteger, Room(); //key房间号,value房间信息
public Hote(int cengShu,int roomNumber) {
this.cengShu = cengShu;
this.roomNumber = roomNumber;
init();
}
private void init(){//初始化,把每个房间信息装入到Map
for (int i = 1; i = this.cengShu; i++) {
for (int j = 1; j = this.roomNumber; j++) {
String roomNumber = i+""+j;
if (j 10) {
roomNumber = i+"0"+j;
}
rooms.put(Integer.valueOf(roomNumber), new Room());
}
}
}
}
package jcon.com.help;
/**
* 酒店管理类
* @author Jcon
*
*/
public class Manager {
private Hote hote = new Hote(1, 15);
//通过房间号查找
public void findRoomByNumber(int roomNumber){
Room room = hote.rooms.get(roomNumber);
if (room == null) {
System.out.println("你要查找的房间号不存在，请确认输入房间号是否正确！");
}else {
if (room.getIsUse()){
System.out.println("房间："+roomNumber+"已有人入住，入住人信息："+room.getCustomer());
}else {
System.out.println("房间"+roomNumber+"还未有人入住");
}
}
}
//查找所有空房间
public void findNullRoom(){
for (Integer key : hote.rooms.keySet()) {
Room room = hote.rooms.get(key);
if (room.getIsUse() == false) {
System.out.println("空房间号："+key);
}
}
}
//入住
public void in(int roomNumber,Customer customer){
Room room = hote.rooms.get(roomNumber);
room.setCustomer(customer);
room.setIsUse(true);
room.setNumber(roomNumber);
hote.rooms.put(roomNumber, room);
System.out.println("房间："+roomNumber+"办理入住，住房人信息："+customer);
}
//退房
public void out(int roomNumber){
Room room = hote.rooms.get(roomNumber);
room.setCustomer(null);
room.setIsUse(false);
hote.rooms.put(roomNumber, room);
System.out.println("房间："+roomNumber+"办理退房");
}
public static void main(String[] args) {
Manager manager = new Manager();
//客人来开房，先看看有没有空房间
manager.findNullRoom();
//看到还有很多空房子，客人要开115号房
Customer customer = new Customer("小白", "03月25日入住", 3);//登记客人信息
manager.in(115, customer);//开房
//查看开房后当前房间信息
manager.findRoomByNumber(115); //115号房的
manager.findNullRoom(); //所有空房间的
//住了3天客人要退房
manager.out(115);
//查看退房后当前房间信息
manager.findRoomByNumber(115); //115号房的
manager.findNullRoom(); //所有空房间的
}
}
分享标题：java酒店入住时间代码 java酒店入住时间代码是多少
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