How do I insert objects into an array?

Question

How can I insert objects into an array? Here I have a class called HotelRoom which contains getter, setter, and the constructor method.

public class HotelRoom {

int roomNumber;
String roomGuest;


public HotelRoom (int room, String guest) {
    roomNumber = room;
    roomGuest = guest;
}

public int getRoom() {
    return roomNumber;
}

public void setRoom() {
    roomNumber = room;
}

public String getName() {
    return roomGuest;
}

public void setName() {
    roomGuest = guest;
}

And here I have the main method containing the array initializer and the objects. I've also inserted the objects into the array however, when compiling, the problem arises in the print command and it states: "cannot find symbol - variable HotelRoom". What am I doing wrong?

public class Hotel {
    public static void main (String [] args) {
    HotelRoom[] rooms = new HotelRoom [5];

    HotelRoom guest1 = new HotelRoom(67, "Harry");
    HotelRoom guest2 = new HotelRoom(98, "Bob");
    HotelRoom guest3 = new HotelRoom(34, "Steven");
    HotelRoom guest4 = new HotelRoom(99, "Larry");
    HotelRoom guest5 = new HotelRoom(103, "Patrick");

    rooms[0] = guest1;
    rooms[1] = guest2;
    rooms[2] = guest3;
    rooms[3] = guest4;
    rooms[4] = guest5;

    System.out.println (HotelRoom);
}

}

You should print rooms instead.

Rohit Jain
– Rohit Jain

2014-02-05 17:05:40 +00:00
Commented Feb 5, 2014 at 17:05 — Rohit Jain
– Rohit Jain, Commented Feb 5, 2014 at 17:05
System.out.println (rooms)

sadhu
– sadhu

2014-02-05 17:06:01 +00:00
Commented Feb 5, 2014 at 17:06 — sadhu
– sadhu, Commented Feb 5, 2014 at 17:06

Josh M · Accepted Answer · 2014-02-05 17:06:18Z

4

This is because HotelRoom is a class, not an Object. If you have intentions of printing out all of the rooms, perhaps you could try something like:

for(final HotelRoom room : rooms)
    System.out.printf("%s in room %d\n", room.getName(), room.getRoom());

Or you could override the toString() method in HotelRoom:

public String toString(){
    return String.format("%s in room %d", roomGuest, roomNumber);
}

With the overridden toString() method, you can now modify your loop to:

for(final HotelRoom room : rooms)
   System.out.println(room);

Or, if you want:

System.out.println(Arrays.toString(rooms));

answered Feb 5, 2014 at 17:06

Josh M

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Comments

ThePerson · Accepted Answer · 2014-02-05 17:07:19Z

0

HotelRoom is the name of the class. The objects are now in the rooms array. If you are wanting to print out the array, try printing rooms, or a particular place in the array, e.g

System.out.println(rooms[0].getName());

answered Feb 5, 2014 at 17:07

ThePerson

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Comments

XpressOneUp · Accepted Answer · 2014-02-05 17:09:40Z

0

At first implement toString() in the HotelRoom:

public String toString() {
    return roomNumber + " " + roomGuest;
}

And then print the right array:

System.out.println(Arrays.toString(rooms));

answered Feb 5, 2014 at 17:09

XpressOneUp

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