Java Tutorial Lesson 09: Matrices and objects

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You have this “Room” class: 

public class Room {
    private String title;
    private static final int ROOM_WIDTH=10;
    private static final int ROOM_HEIGHT=5;
    public Room(String title) {
        this.title = title;
    }
    public char[][] getData() {
        char [][] data = new char[ROOM_HEIGHT][ROOM_WIDTH];
        data[0] = new String("----------").toCharArray();
        data[1] = new String("|        |").toCharArray();
 
        // Print left wall
        data[2][0] = '|';
 
        // Calculate number of spaces
        // (Remove text and walls from total width)
        int noOfSpaces = ROOM_WIDTH-title.length()-2;
 
        // Print spaces before text
        int i;
        for(i=1;i<=noOfSpaces/2;i++) {
            data[2][i] = ' ';
        }
 
        // Print the text
        // (Make sure we have place for right wall (ROOM_WIDTH-1))
        for(int k=0;k<title.length() && i<ROOM_WIDTH-1;k++,i++) {
            data[2][i] = title.toCharArray()[k];
        }
 
        // Print spaces after text
        // (Make sure we have place for right wall (ROOM_WIDTH-1))
        for (int r=noOfSpaces/2;r < noOfSpaces && i<ROOM_WIDTH-1; r++,i++) {
            data[2][i] = ' ';
        }
 
        // Print right wall and change line
        data[2][9] = '|';
 
        data[3] = new String("|        |").toCharArray();
        data[4] = new String("----------").toCharArray();
        return data;
    }
}

Your work is to create a “Game” class that can be called as: 

java Game 3 3

The output when running the Game class should look as follows: 

Lesson 9
 
------------------------------
|        ||        ||        |
|   1    ||   2    ||   3    |
|        ||        ||        |
------------------------------
------------------------------
|        ||        ||        |
|   4    ||   5    ||   6    |
|        ||        ||        |
------------------------------
------------------------------
|        ||        ||        |
|   7    ||   8    ||   9    |
|        ||        ||        |
------------------------------

Some leads:

  1. The print order when 3 3 is given as parameters are:
    1. The first line of room 1
    2. The first line of room 2
    3. The first line of room 3
    4. The second line of room 1
    5. The second line of room 2
    6. The second line of room 3
    7. And same logic for the rest of lines of room 1-3
    8. The first line of room 4
    9. The first line of room 5
    10. The first line of room 6
    11. The second line of room 4
    12. And continue in the same way until the whole map has been printed
  2. Its a good idea to do the implementation in two steps, first create a matrix with all the room, then step through the matrix and print the rooms
  3. To make it easier you can assume that all rooms have the same size. This makes it possible to get the size of a room by checking the size of the first room in position 0,0 in the following way: 
Room r = roomMatrix[0][0];
int height = r.getData().length; // Number of lines in room
int length = r.getData()[0].length;  // Number of columns in first line of room
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