Is this overboard?

Calendar c = Calendar.getInstance();
c.setTimeInMillis(new Date().getTime() - gameStart.getTime());
StringBuilder sb = new StringBuilder("Run time: ");
if(c.get(Calendar.HOUR) != 0) {
    sb.append(c.get(Calendar.HOUR));
    sb.append(" hours ");
}
if(c.get(Calendar.MINUTE) != 0) {
    sb.append(c.get(Calendar.MINUTE));
    sb.append(" minutes ");
}
if(c.get(Calendar.SECOND) != 0) {
    sb.append(c.get(Calendar.SECOND));
    sb.append(" seconds ");
}
if(c.get(Calendar.MILLISECOND) != 0) {
    sb.append(c.get(Calendar.MILLISECOND));
    sb.append(" milliseconds");
}

Shocky.sendChannel(bot, channel, sb.toString());