练习：酒店管理系统

package zjiudianguanlixitong;

//酒店房间
public class Room {

    private String no;
    private String type; //标准间 双人间 豪华间
    private boolean isUse; //false表示空闲，true表示占用
    
    public Room() {
        super();
    }
    public Room(String no, String type, boolean isUse) {
        super();
        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 isUse() {
        return isUse;
    }
    public void setUse(boolean isUse) {
        this.isUse = isUse;
    }
    
    public String toString(){
        return "["+no+","+type+","+(isUse?"占用":"空闲")+"]";
    }
}

package zjiudianguanlixitong;

public class Hotel {

    //房间
    Room[][] rooms;
    
    //构造方法
    Hotel(){
        
        //5层，每层10个房间
        rooms = new Room[5][10];
        
        //赋值
        //1,2 标准间
        //3,4 双人间
        //5 豪华间
        for(int i = 0; i < rooms.length; i++){
            
            for(int j = 0; j < rooms[i].length; j++){
                
                if(i == 0 || i == 1){
                    rooms[i][j] = new Room(((i+1)*100)+j+1+"", "标准间", false);
                }
                
                if(i == 2 || i == 3){
                    rooms[i][j] = new Room(((i+1)*100)+j+1+"", "双人间", false);
                }
                
                if(i == 4){
                    rooms[i][j] = new Room(((i+1)*100)+j+1+"", "豪华间", false);
                }                
            }
        }
    }
    
    //对外提供一个打印酒店房间列表的方法
    public void print(){
        
        for(int i = 0; i < rooms.length; i++){
            
            for(int j = 0; j < rooms[i].length; j++){
                System.out.println(rooms[i][j] + "  ");
            }
            
            System.out.println();
        }
    }
    
    //对外提供一个预定酒店的方法
    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)){
                    
                    //将该房间的状态改成占用
                    rooms[i][j].setUse(true);
                    return;
                }
            }
        }
    }
}

package zjiudianguanlixitong;

import java.util.*;

public class Test {

    public static void main(String[] args) {
        
        
        Scanner s = new Scanner(System.in);

        //初始化酒店
        Hotel h = new Hotel();
        
        //输出房间列表
        h.print();
        
        System.out.print("请输入预订酒店的房号");
        
        String no = s.next();
        
        //预订房间
        h.order(no);
        
        //打印酒店列表
        h.print();
    }

}