BeerSong.java

public class BeerSong {

	public static void main(String[] args) {

		int numberOfBottles = 100;

		singStanza(numberOfBottles);

		/**
		 * These expressions are equivalent: - numberOfBottles = numberOfBottles
		 * - 1; - numberOfBottles -= 1; - numberOfBottles--;
		 */
		while (numberOfBottles >= 67) {
			numberOfBottles = numberOfBottles - 1;
			singStanza(numberOfBottles);
		}

		do {
			numberOfBottles -= 1;
			singStanza(numberOfBottles);
		} while (numberOfBottles > 50);

		for (int bottleCount = 49; bottleCount > 0; bottleCount--) {
			singStanza(bottleCount);
		}
		
		System.out.println("No more bottles of refreshing beverage on the waaaaaaall!");
	}

	private static void singStanza(int numberOfBottles) {

		boolean onlyOneBottle = (numberOfBottles == 1);
		/**
		 * We could also do it this way: String descriptor = numberOfBottles >
		 * 1? "bottles": "bottle";
		 * 
		 * This is called a ternary operator. You'll like it later.
		 */
		String descriptor;
		if (onlyOneBottle) {
			descriptor = "bottle";
		} else {
			descriptor = "bottles";
		}

		String bottlesLyric = numberOfBottles + " " + descriptor + " of refreshing beverage";
		System.out.println(bottlesLyric + " on the wall.");
		System.out.println(bottlesLyric + ". Take one down, pass it around.");
	}

}