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Java

Abe Layee
Abe Layee
8,378 Points
Posted by Abe Layee
Abe Layee
8,378 Points

Void type not allowed here

I am trying to print the room types. However, I am getting the error void type is not allowed here. I don't understand why? I have a method called public void printRoomTypes() and it job is to print the array.

  import  java.util.*;
import  java.text.*;
import java.io.*;
import java.util.Arrays;
import javax.sql.rowset.spi.*;


class Hotel {

      private  String name;
      private int rooms;
      private  int booked;
      private  String[] roomTypes = {"Twin","Double", "Suite"};
      private boolean gym = false;
      private boolean pool = false;
      public  Hotel() {}


       public  Hotel (String name, int rooms, int booked, boolean gym, boolean pool) {
        super();
        this.name = name;
        this.rooms = rooms;
        this.booked = booked;
        this.gym = gym;
        this.pool = pool;
    }


    public  void setName (String Name) {
        name = Name;
    }

    public  String getName () {
            return name;
        }


    public void Setroom(int Room){
        rooms = Room;   
    }

    public int getRoom (){
        return rooms;
    }

    public void setBooked (int Booked){
         booked = Booked;
    }


    public int getBooked (){
        return booked;
    }

     public int checkAvailability (){
        return this.rooms - this.booked;
    }

    public  boolean hasGym() {
        return  true; 
    }

    public boolean hasPool() {
        return false;
    }

    public void printRoomTypes() {
        for (int i = 0; i < roomTypes.length; i++) {
            System.out.println( " Room sizes: " + roomTypes[i]); //this doesn't work too
        }
    }




    public static void main(String[] args){

        Hotel hotel = new Hotel();
        hotel.setName("Hamilton");
        hotel.Setroom(40);
        hotel.setBooked(22);
        System.out.println("Hotel name: " + hotel.getName());
        System.out.println("Total rooms: " + hotel.getRoom());
        System.out.println("Total rooms booked: " + hotel.getBooked());
        System.out.println("Rooms available " + hotel.checkAvailability() + "\n");
        System.out.println(hotel.printRoomTypes()); // this doesn't work

        System.out.println("......................\n");

        Hotel  newHotel = new Hotel();
               newHotel.setName(" Sheraton");
               newHotel.Setroom(100);
               newHotel.setBooked(95);
        System.out.println("Hotel name: " + newHotel.getName());
        System.out.println("Total rooms: " + newHotel.getRoom());
        System.out.println("Total rooms booked: " + newHotel.getBooked());
        System.out.println("Rooms available " + newHotel.checkAvailability());


    }



}

1 Answer

Brendon Butler
Brendon Butler
4,254 Points
Brendon Butler
Brendon Butler
4,254 Points

When you use the println method, anything inside of that has to be a data type. Inside your println method (10 lines in your main method), you're calling the printRoomTypes method which returns void. If it returned a string, int, etc. it would work properly. The compiler sees it as you trying to print nothing which causes an error.

I looked at your printRoomTypes method, and it looks as if it does all the printing for you. Here's your solution:

// replace this line
System.out.println(hotel.printRoomTypes()); // this doesn't work
// with this line
hotel.printRoomTypes();