Generate a alpha-numeric string

                    private static final String ALPHA_NUMERIC_STRING = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
public static String randomAlphaNumeric(int count) {
		StringBuilder builder = new StringBuilder();
		while (count-- != 0) {
			int character = (int)(Math.random()*ALPHA_NUMERIC_STRING.length());
			builder.append(ALPHA_NUMERIC_STRING.charAt(character));
		}
		return builder.toString();
}