java compare

EventComparatorByNewMessage Comparator<EventObserverFriendModel> {

    compare(EventObserverFriendModel lhs, EventObserverFriendModel rhs) {
        publishTime = ;
        publishTime2 = ;

        (lhs == ) {
            publishTime = ;
        } {
            publishTime = lhs.getChatMessage().getTimeStampValue();
        }

        (rhs == ) {
            publishTime2 = ;
        } {
            publishTime2 = rhs.getChatMessage().getTimeStampValue();
        }

        (publishTime > publishTime2) {//正常狀況 前 大於 後 返回爲1 升序
            ;
        }

        (publishTime < publishTime2) {
            ;
        }

        ;
    }
}