class PasswordUtil {

	public static String humanPassword(int len) {
		StringBuilder sb = new StringBuilder(len);
		for (int i = 0; i < len; i++) {
			int index = RANDOM.nextInt(ALPHA_NUMERIC_READABLE_CHAR.length());
			sb.append(ALPHA_NUMERIC_READABLE_CHAR.charAt(index));
		}
		return sb.toString();
	}

	private  PasswordUtil();

}