1、需要一个房间类，包含房间的属性，比如房间编号、房间类型、是否占用。
2、需要一个旅馆类，旅馆有房间，提供的方法需要有 预订房间、打印房间信息、初始化房间、退房。
3、测试类，测试预订房间。
package javasimple; import java.util.Scanner; public class HotelTest { public static void main(String[] args) { Hotel h = new Hotel(); h.print(); while(true) { System.out.println("请输入房间编号："); Scanner s = new Scanner(System.in); String no = s.next(); h.order(no); h.print(); } } } /** * 旅馆类 * @author haokui * */ class Hotel { private Room [][]rooms;//旅馆有房间 public Hotel(){ rooms = new Room[5][10]; //初始化旅馆时，展示房间 for (int i = 0; i < rooms.length; i++) { for (int j = 0; j < rooms[i].length; j++) { if (i == 0 || i== 1) { //1、2层为单人间 rooms[i][j] = new Room((i+1)*100 + j + 1 + "","单人间",false); } if (i == 2 || i== 3) { //3、4层为双人间 rooms[i][j] = new Room((i+1)*100 + j + 1 + "","双人间",false); } if (i == 4) { //5层为豪华间 rooms[i][j] = new Room((i+1)*100 + j + 1 + "","豪华间",false); } } } } /** * 打印房间信息 */ public void print(){ for (int i = 0; i < rooms.length; i++) { for (int j = 0; j < rooms[i].length; j++) { System.out.print(rooms[i][j].toString()); } System.out.println(); } } /** * 预订房间 * @param no - 房间号 */ public void order(String no){ for (int i = 0; i < rooms.length; i++) { for (int j = 0; j < rooms[i].length; j++) { if (rooms[i][j].getNo().equals(no)) { //找到了要订的房间，把空闲改为占用 rooms[i][j].setIsuse(true); } } } } /** * 退房 * @param no - 房间号 */ public void cancelorder(String no){ for (int i = 0; i < rooms.length; i++) { for (int j = 0; j < rooms[i].length; j++) { if (rooms[i][j].getNo().equals(no)) { //找到了要退的房间，把占用改为空闲 rooms[i][j].setIsuse(false); } } } } } /** * 房间类 * @author haokui * */ class Room { // private String no;//房间编号 private String type;//房间类型 private boolean isuse;//是否占用 public Room (String no, String type, boolean isuse) { this.no = no; this.type = type; this.isuse = isuse; } public String getNo() { return no; } public void setNo(String no) { this.no = no; } public String getType() { return type; } public void setType(String type) { this.type = type; } public boolean isIsuse() { return isuse; } public void setIsuse(boolean isuse) { this.isuse = isuse; } public String toString(){ return "["+no+","+type+","+(isuse ? "占用":"空闲")+"]"; } }