Date in "Since" format

Since.java

package com.agroneo.web;

public class Since {

    public static String since(long durationInit, String lng, int level) {

        double DAYS_PER_YEAR = 365.24225D;
        double M_PER_SECOND = 1000D;
        double M_PER_MINUTE = 60D * M_PER_SECOND;
        double M_PER_HOUR = 60D * M_PER_MINUTE;
        double M_PER_DAY = 24D * M_PER_HOUR;
        double M_PER_WEEKS = 7D * M_PER_DAY;
        double M_PER_MONTH = Math.floor((DAYS_PER_YEAR / 12D) * M_PER_DAY);
        double M_PER_YEAR = Math.floor(DAYS_PER_YEAR * M_PER_DAY);

        if (durationInit < 60000D && durationInit > -60000D) {
            return Language.getLang(durationInit > 0 ? "JUST_NOW" : "IMMEDIATELY", lng);
        }

        double durationMillis = (durationInit > 0) ? durationInit : -durationInit;

        double yearsD = Math.floor(durationMillis / M_PER_YEAR);
        durationMillis = durationMillis - (yearsD * M_PER_YEAR);

        double monthsD = Math.floor(durationMillis / M_PER_MONTH);
        durationMillis = durationMillis - (monthsD * M_PER_MONTH);

        double weeksD = Math.floor(durationMillis / M_PER_WEEKS);
        durationMillis = durationMillis - (weeksD * M_PER_WEEKS);

        double daysD = Math.floor(durationMillis / M_PER_DAY);
        durationMillis = durationMillis - (daysD * M_PER_DAY);

        double hoursD = Math.floor(durationMillis / M_PER_HOUR);
        durationMillis = durationMillis - (hoursD * M_PER_HOUR);

        double minutesD = Math.floor(durationMillis / M_PER_MINUTE);
        durationMillis = durationMillis - (minutesD * M_PER_MINUTE);

        double secondsD = Math.floor(durationMillis / M_PER_SECOND);
        durationMillis = durationMillis - (secondsD * M_PER_SECOND);

        int years = (int) yearsD;
        int months = (int) monthsD;
        int weeks = (int) weeksD;
        int days = (int) daysD;
        int hours = (int) hoursD;
        int minutes = (int) minutesD;
        int seconds = (int) secondsD;

        // years + "/" + months + "/" + weeks + "/" + days + "/" + hours + "/" +
        // minutes + "/" + seconds;

        StringWriter since = new StringWriter();
        String space_num = " ";
        String space = "";


        since.append(Language.getLang(durationInit > 0 ? "AGO_BEFORE" : "IN_BEFORE", lng));
        for (int i = 0; i < 6 && level > 0; i++) {
            boolean effect = false;
            if (years > 0) {
                since.append(space + years + space_num + (years > 1 ? Language.getLang("YEARS", lng) : Language.getLang("YEAR", lng)));
                years = 0;
                effect = true;
                level--;
            } else if (months > 0) {
                since.append(space + months + space_num + (months > 1 ? Language.getLang("MONTHS", lng) : Language.getLang("MONTH", lng)));
                months = 0;
                effect = true;
                level--;
            } else if (weeks > 0) {
                since.append(space + weeks + space_num + (weeks > 1 ? Language.getLang("WEEKS", lng) : Language.getLang("WEEK", lng)));
                weeks = 0;
                effect = true;
                level--;
            } else if (days > 0) {
                since.append(space + days + space_num + (days > 1 ? Language.getLang("DAYS", lng) : Language.getLang("DAY", lng)));
                days = 0;
                effect = true;
                level--;
            } else if (hours > 0) {
                since.append(space + hours + space_num + (hours > 1 ? Language.getLang("HOURS", lng) : Language.getLang("HOUR", lng)));
                hours = 0;
                effect = true;
                level--;
            } else if (minutes > 0) {
                since.append(space + minutes + space_num + (minutes > 1 ? Language.getLang("MINUTES", lng) : Language.getLang("MINUTE", lng)));
                minutes = 0;
                effect = true;
                level--;
            } else if (seconds > 0) {
                since.append(space + seconds + space_num + (seconds > 1 ? Language.getLang("SECONDS", lng) : Language.getLang("SECOND", lng)));
                seconds = 0;
                effect = true;
                level--;
            }
            if (effect) {
                if (level == 1) {
                    space = " " + Language.getLang("AND", lng) + " ";
                } else {
                    space = ", ";
                }
            }
        }

        return since.toString() + Language.getLang(durationInit > 0 ? "AGO_AFTER" : "IN_AFTER", lng);
    }
}