FAQ: Conditional Operators - Conditional-And: &&

This community-built FAQ covers the “Conditional-And: &&” exercise from the lesson “Conditional Operators”.

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Why is the boolean set to “open” in the reservation class? I thought booleans could only be true or false?

what type does open have?

Got it. Thanks for the pointer

im confused because i have the else if () {} thing done but it keeps on pointing to the parentases saying illegal start of expression

public class Reservation {
  int guestCount;
  int restaurantCapacity;
  boolean isRestaurantOpen;
  boolean isConfirmed;
  
  public Reservation(int count, int capacity, boolean open) {
    guestCount = count;
		restaurantCapacity = capacity;
		isRestaurantOpen = open;
  }  
  
  public void confirmReservation() {
    /* 
       Write conditional
       ~~~~~~~~~~~~~~~~~
       if restaurantCapacity is greater
       or equal to guestCount
       AND
       the restaurant is open:
         print "Reservation confirmed"
         set isConfirmed to true
       else:
         print "Reservation denied"
         set isConfirmed to false
    */
    if (restaurantCapacity>=guestCount&&isRestaurantOpen){
      System.out.println("Reservation confirmed");
      isConfirmed = true;
    } else {
        System.out.println("Reservation denied");
        isConfirmed = false;
    }
  }
  
  public void informUser() {
    System.out.println("Please enjoy your meal!");
  }
  
  public static void main(String[] args) {
    Reservation partyOfThree = new Reservation(3, 12, true);
    Reservation partyOfFour = new Reservation(4, 3, true);
    partyOfThree.confirmReservation();
    partyOfThree.informUser();
    partyOfFour.confirmReservation();
    partyOfFour.informUser();
  }
}

With the output of:

Reservation confirmed
Please enjoy your meal!
Reservation denied
Please enjoy your meal!

why do we add the instance “is confirmed” in the confirmRestaurant method ?

I think it’s to be a trigger for you to correct this. I corrected this with:

public void informUser() {
if(isConfirmed == true){
System.out.println(“Please enjoy your meal!”);
} else {
System.out.println(“We’re sorry but we’re full, hope to see you next time!”);
}

}