Java Puzzle 5 (spot the bug if one exists)

Puzzle5.java

import java.util.Random;

public class Puzzle5 {

	private static Random rnd = new Random();
	
	public static void main(String[] args) {
		StringBuffer word = null;
		switch(rnd.nextInt(2)) {
			case 1: word = new StringBuffer('R');
			case 2: word = new StringBuffer('T');
			default: word = new StringBuffer('J');
		}
		word.append("est");
		System.out.println(String.format("It's time for a %s.", word));
	}
	
}

Adapted from Java Puzzlers: Traps, Pitfalls, and Corner Cases - Puzzle #23