具有多个类的布尔值

Question

我正在尝试使用 3 class 程序并传递一个布尔值来预订房间。我有 driver 程序、建筑、房间程序。我将 reserve 设置为 false，当它已经设置为 true 时，我无法弄清楚如何打印出文本语句。我想我要么通过 classes 从 driver 错误地传递布尔值，要么遗漏了一些东西。我在构建 class 时使用 reserveRoom 使用 if 语句来查看打印语句是否已经为真，无论我采用哪种方式都不起作用。

如有任何帮助，我们将不胜感激。谢谢。

来自我的 driver 将布尔值发送到构建程序的程序

  System.out.print ("Which room would you like to reserve?");
  System.out.print (building);
  System.out.print ("reserve: ");
  reservNum = input.nextInt();

  building.reserveRoom(reserve, reservNum);

从我的大楼 class。

public void reserveRoom (boolean reserve, int count)
{
    //class constant

    //class variables

    /*****************************************************/

    room [count].updateReserve(reserve);

} // end

来自房间class。

    public void updateReserve(boolean newReserve)
{
    //class constant

    //class variables

    /*****************************************************/


    if (newReserve == false)
    {
        roomAvail = true;
    }
    else
    {
        roomAvail = false;
    }
} // END

Answer 1

嗯，您的问题中缺少一些信息，但它认为您正在寻找：

public void updateReserve(boolean newReserve) {
  if(newReserve && !roomAvail) {
    System.out.println("Sorry this room is taken")
 } else {
    roomAvail = !newReserve;
 }
}

Answer 2

根据我对你的问题的理解，这就是我想出的 -

    public class Reservation {

    public static void main(String args[]) {
        Building building = new Building(20);
        boolean reserve= false;
         
        System.out.println("Which room would you like to reserve?");
  System.out.println(building);
  System.out.println("reserve: ");
  int reservNum = 2;

  building.reserveRoom(reserve, reservNum);
  System.out.println("Is Reserved?:"+building.getRoom(reservNum).getRoomAvail());
    }
    
}

class Building {
    
    Room room[];
    public Building(int numOfRooms) {
        room = new Room[numOfRooms];
        for(int i=0; i<numOfRooms; i++) {
            room[i] = new Room();
        }
    }
    public String toString() {
        return "This Building has "+room.length+"rooms";
    }
    public Room getRoom(int roomNum){
        return room[roomNum];
    }
public void reserveRoom (boolean reserve, int count)
{
    //class constant

    //class variables

    /*****************************************************/

    room [count].updateReserve(reserve);

} // end
}

class Room {
    boolean roomAvail;
    
    public boolean getRoomAvail() {
        return roomAvail;
    }
public void updateReserve(boolean newReserve)
{
    //class constant

    //class variables

    /*****************************************************/


    if (newReserve == false)
    {
        roomAvail = true;
    }
    else
    {
        roomAvail = false;
    }
} // END 
}

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