controlDateWithTimestamps.java

    /**
     * @param realDate your real date -> dd/MM/yyyy
     * */
    public static String controlDateWithTimestamps(String realDate) {
        try {
            Long currentTimestamp = System.currentTimeMillis() / 1000;

            DateFormat formatter2 = new SimpleDateFormat("dd/MM/yyyy");
            Date messageDate = (Date) formatter2.parse(realDate);
            Long messageTimestamp = messageDate.getTime() / 1000;

            Long z = currentTimestamp - messageTimestamp;
            if (z <= (1 * 24 * 60 * 60)) {
                // today
                return "today";
            } else if (z <= (2 * 24 * 60 * 60) && z > (1 * 24 * 60 * 60)) {
                // yesterday
                return "yesterday";
            } else if (z <= (7 * 24 * 60 * 60) && z > (2 * 24 * 60 * 60)) {
                // inside last 7 day
                String weekDay;
                SimpleDateFormat dayFormat = new SimpleDateFormat("EEEE");
                weekDay = dayFormat.format(messageTimestamp*1000);
                return weekDay;
            } else {
                // a week ago
                return realDate;
            }
        } catch (Exception e) {
            return realDate;
        }
    }