Java Blackjack Checker

java blackjack implementation.java

	/**
	 * Simple blackjack method that: 
	 * 
	 * 1. Returns the input which is the nearest to number 21
	 * 2. Returns 0 if both numbers are over 21
	 * @author Jon Bonso
	 * @param a
	 * @param b
	 */
	static int blackjack(int a, int b) {
		
		if (a > 21 && b > 21) {
			return 0;
		} 
		// these ternary operators simply read as 
		// "If the number is over 21, then return 0, else, retain its value"
		// so we only return the input with the greater value
		// than the other input, that does not go over 21. 
		return ( ((a > 21) ? 0 : a) > 
			 ((b > 21) ? 0 : b)) 
			     ? a : b ;
	}
	
	public static void main(String... args) {
		
		System.out.println( blackjack(19, 21) );
		System.out.println( blackjack(21, 19) );
		System.out.println( blackjack(19, 22) );
		System.out.println( blackjack(23, 18) );
		System.out.println( blackjack(23, 24) );
	}