It's not just a song from summer camp, its an old-timey game: Here is a Video Explaining the rules

First we will make a BingoCell class, then a BingoCard class, and finally we will make a BingoGame class.

The BingoCell class would be a subclass of Cell that would add the attributes of a number and a font. It will have its own draw method that can draw its number. Here is a hint on how to build upon the draw method of the parent class: For now, let a cell that is “off” represent an uncalled number, and a “on” cell be one that the player has clicked on when that number is called. Later you may wish represent a called number differently. The class should have the following:

1. Constructors that can will allow a client class to initialize the digit (the number 0 can be used as the center “free” cell
2. accessor methods so a client class can know a cell's number

You can test out your BingoCell class by adapting CellTester.java to construct new BingoCells in the resetCell method. The rest would not need to be changed since a BingoCell is a Cell. Eventually, your BingoBoard class would be the ultimate test of your BingoCell class!

The BingoCard class will need:

1. a 2-D array of BingoCells
2. a method that constructs the card so that:
   1. The “B” column has 5 unique numbers from 1-15
   2. The “I” column has 5 unique numbers from 16-30
   3. The “N” column has 4 unique numbers from 31-45, with the center a “Free” cell
   4. The “G” column has 5 unique numbers from 46-60
   5. The “O” column has 5 unique numbers from 61-75
3. a toString method that has no parameters, and returns a string representation of the board that is similar to :

1. a method 'hasBingo' (that returns a boolean) which detects a win for the rows, columns, and diagonals (later you can overload this with method that takes a parameter for the “blackout,” “corners,” or “box” variants)
2. a draw method takes a Graphics parameter to draw the board

The “Extreme Programming” approach is to begin by writing one or more client classes of BingoBoard to test each of these specifications. The first 4 can be done with a text based application, and then the draw method can be tested by a BingBoardTester that you could start by adapting the CellTester code.