Class Diagram for the Online Blackjack Game

In this lesson, we’ll create the class diagram for the Blackjack game. We will first define the core classes, then identify their relationships to fully model the game’s structure according to our requirements.

Components of Blackjack

In this section, we’ll define the classes for the Blackjack game. As mentioned earlier, we are following the bottom-up approach to designing a class diagram for the Blackjack game.

Card

The Card class encapsulates the properties of a single playing card used in Blackjack. Each Card object is defined by its suit (hearts, spades, clubs, or diamonds) and face value (ranging from Ace to King). The class includes methods to determine the card’s Blackjack point value (with special handling for face cards and Aces) and to provide a human-readable string representation of the card.