Java needs to be installed :
download the Java Runtime Environment (JRE) here
This is the very first Java game I ever made. It was an assignment for our Java class at school. I spent around a week or two writing it.
It is fully playable and functional. Interact with the program using the mouse. As in regular BlackJack, the goal is to get as close as possible to 21 without going over, or at least to score more than your opponent.