In Tutorial 1 Duke dashed for coffee with arcade physics. Now he sets the cup down for a calmer contest: Duke Jack, a game of blackjack. A card game has none of that arcade motion — cards sit on the felt and the rules decide who wins. This tutorial shows how the same Game Builder pattern (visual data + an onUpdate companion) handles a card game, where your code reads the cards and runs the table instead of simulating movement. We'll build a felt table, deal a real hand, and wire up the complete blackjack rules: hit, stand, the dealer's draw, and the win/lose decision.
What is Codename One? Codename One is an open-source framework for building native iOS, Android, desktop, and web apps from a single Java or Kotlin codebase. Learn more at codenameone.com.
If you haven't set up a project yet, the project setup in Tutorial 1 applies verbatim — only the mode changes (board mode isn't the default, so the -Dmode=board flag is required here):
mvn cn1:create-game-scene -DclassName=com.example.dukejack.DukeJack -Dmode=board
mvn cn1:gamebuilder
