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Format date without year

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10 1523
不要未来只要你来
不要未来只要你来 2020-12-25 12:15

How can create text representation of some date, that takes locale into account and contains only day and month (no year)?

Following code gives me s

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10条回答
  • 我寻月下人不归
    2020-12-25 12:54

    Just wanted to contribute another modification removing year from the pattern, which works well for DateFormat.MEDIUM, even in locales such as pt_PT (d 'de' MMM 'de' yyyy) or lv_LV (y. 'gada' d. MMM).

    public static DateFormat getMediumDateInstanceWithoutYears()
 {
   SimpleDateFormat sdf = (SimpleDateFormat) DateFormat.getDateInstance(DateFormat.MEDIUM);
   sdf.applyPattern(sdf.toPattern().replaceAll(
       "([^\\p{Alpha}']|('[\\p{Alpha}]+'))*y+([^\\p{Alpha}']|('[\\p{Alpha}]+'))*",
       ""));
   return sdf;
 }
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  • 醉酒成梦
    2020-12-25 12:55

    You could use regex to trim off all y's and any non-alphabetic characters before and after, if any. Here's a kickoff example:

    public static void main(String[] args) throws Exception {
    for (Locale locale : Locale.getAvailableLocales()) {
        DateFormat df = getShortDateInstanceWithoutYears(locale);
        System.out.println(locale + ": " + df.format(new Date()));      
    }
}

public static DateFormat getShortDateInstanceWithoutYears(Locale locale) {
    SimpleDateFormat sdf = (SimpleDateFormat) DateFormat.getDateInstance(DateFormat.SHORT, locale);
    sdf.applyPattern(sdf.toPattern().replaceAll("[^\\p{Alpha}]*y+[^\\p{Alpha}]*", ""));
    return sdf;
}

    You see that this snippet tests it for all locales as well. It looks to work fine for all locales here.

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  • 不知归路
    2020-12-25 12:58

    or 

       SimpleDateFormat dateFormat = new SimpleDateFormat("EEE MMM d');
    dateFormat.format(date);
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  • 野性不改
    2020-12-25 12:59

    The following is a utility class which gives you the date format without year. I list all the date formats known to Java using the following code.

    Locale[] locales = SimpleDateFormat.getAvailableLocales();
for (int i = 0; i < locales.length; i++) {
    Locale locale = locales[i];
    DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.FULL, locale);
}

    And then manually remove the year part. It returns two flavors of date format, normal and abbreviated, ie Monday, March 18 vs Mon, Mar 18. 

    public class DateFormatWithoutYear {

    private static Map<String, String> formats = new HashMap<String, String>();
    private static String DEFAULT_FORMAT = "EEEE, d MMMM";
    static {
        formats.put("_af", "EEEE dd MMMM");
        formats.put("_am", "EEEE, d MMMM");
        formats.put("_az", "EEEE, d, MMMM");
        formats.put("_be", "EEEE, d MMMM");
        formats.put("_bg", "dd MMMM, EEEE");
        formats.put("BG_bg", "dd MMMM, EEEE");
        formats.put("_ca", "EEEE d MMMM");
        formats.put("ES_ca", "EEEE d MMMM");
        formats.put("_cs", "EEEE, d. MMMM");
        formats.put("CZ_cs", "EEEE, d. MMMM");
        formats.put("_da", "EEEE 'den' d. MMMM");
        formats.put("DK_da", "EEEE 'den' d. MMMM");
        formats.put("_de", "EEEE, d. MMMM");
        formats.put("AT_de", "EEEE, dd. MMMM");
        formats.put("BE_de", "EEEE, d. MMMM");
        formats.put("CH_de", "EEEE, d. MMMM");
        formats.put("DE_de", "EEEE, d. MMMM");
        formats.put("LI_de", "EEEE, d. MMMM");
        formats.put("LU_de", "EEEE, d. MMMM");
        formats.put("_el", "EEEE, d MMMM");
        formats.put("GR_el", "EEEE, d MMMM");
        formats.put("_en", "EEEE, MMMM d");
        formats.put("AU_en", "EEEE, d MMMM");
        formats.put("BE_en", "EEEE d MMMM");
        formats.put("BW_en", "EEEE dd MMMM");
        formats.put("BZ_en", "EEEE, MMMM d");
        formats.put("CA_en", "EEEE, d MMMM");
        formats.put("GB_en", "EEEE, d MMMM");
        formats.put("HK_en", "EEEE, d MMMM");
        formats.put("IE_en", "EEEE d MMMM");
        formats.put("IN_en", "EEEE d MMMM");
        formats.put("JM_en", "EEEE, MMMM d");
        formats.put("MH_en", "EEEE, MMMM d");
        formats.put("MT_en", "EEEE, d MMMM");
        formats.put("NA_en", "EEEE, MMMM d");
        formats.put("NZ_en", "EEEE, d MMMM");
        formats.put("PH_en", "EEEE, MMMM d");
        formats.put("PK_en", "EEEE, MMMM d");
        formats.put("RH_en", "EEEE dd MMMM");
        formats.put("SG_en", "EEEE, d MMMM");
        formats.put("TT_en", "EEEE, MMMM d");
        formats.put("US_en", "EEEE, MMMM d");
        formats.put("VI_en", "EEEE, MMMM d");
        formats.put("ZA_en", "EEEE dd MMMM");
        formats.put("ZW_en", "EEEE dd MMMM");
        formats.put("_es", "EEEE d 'de' MMMM");
        formats.put("AR_es", "EEEE d 'de' MMMM");
        formats.put("BO_es", "EEEE d 'de' MMMM");
        formats.put("CL_es", "EEEE d 'de' MMMM");
        formats.put("CO_es", "EEEE d 'de' MMMM");
        formats.put("CR_es", "EEEE d 'de' MMMM");
        formats.put("DO_es", "EEEE d 'de' MMMM");
        formats.put("EC_es", "EEEE d 'de' MMMM");
        formats.put("ES_es", "EEEE d 'de' MMMM");
        formats.put("GT_es", "EEEE d 'de' MMMM");
        formats.put("HN_es", "EEEE dd 'de' MMMM");
        formats.put("MX_es", "EEEE d 'de' MMMM");
        formats.put("NI_es", "EEEE d 'de' MMMM");
        formats.put("PA_es", "EEEE d 'de' MMMM");
        formats.put("PE_es", "EEEE d 'de' MMMM");
        formats.put("PR_es", "EEEE d 'de' MMMM");
        formats.put("PY_es", "EEEE d 'de' MMMM");
        formats.put("SV_es", "EEEE d 'de' MMMM");
        formats.put("US_es", "EEEE d 'de' MMMM");
        formats.put("UY_es", "EEEE d 'de' MMMM");
        formats.put("VE_es", "EEEE d 'de' MMMM");
        formats.put("_et", "EEEE, d. MMMM");
        formats.put("_eu", "EEEE, MMMM'ren' dd'a'");
        formats.put("_fi", "cccc, d. MMMM");
        formats.put("FI_fi", "cccc, d. MMMM");
        formats.put("_fil", "EEEE, MMMM dd");
        formats.put("PH_fil", "EEEE, MMMM dd");
        formats.put("_fr", "EEEE d MMMM");
        formats.put("BE_fr", "EEEE d MMMM");
        formats.put("CA_fr", "EEEE d MMMM");
        formats.put("CH_fr", "EEEE, d MMMM");
        formats.put("FR_fr", "EEEE d MMMM");
        formats.put("LU_fr", "EEEE d MMMM");
        formats.put("MC_fr", "EEEE d MMMM");
        formats.put("_gl", "EEEE dd MMMM");
        formats.put("_iw", "EEEE, d בMMMM");
        formats.put("IL_iw", "EEEE, d בMMMM");
        formats.put("_hi", "EEEE, d MMMM");
        formats.put("IN_hi", "EEEE, d MMMM");
        formats.put("_hr", "EEEE, d. MMMM");
        formats.put("HR_hr", "EEEE, d. MMMM");
        formats.put("_hu", "MMMM d., EEEE");
        formats.put("HU_hu", "MMMM d., EEEE");
        formats.put("_hy", "EEEE, MMMM d");
        formats.put("_in", "EEEE, dd MMMM");
        formats.put("ID_in", "EEEE, dd MMMM");
        formats.put("_it", "EEEE d MMMM");
        formats.put("CH_it", "EEEE, d MMMM");
        formats.put("IT_it", "EEEE d MMMM");
        formats.put("_ja", "M月d日EEEE");
        formats.put("JP_ja", "M月d日EEEE");
        formats.put("_ka", "EEEE, MMMM dd");
        formats.put("_kk", "EEEE, d MMMM");
        formats.put("_ko", "M월 d일 EEEE");
        formats.put("KR_ko", "M월 d일 EEEE");
        formats.put("_lt", "'m'. MMMM d 'd'., EEEE");
        formats.put("LT_lt", "'m'. MMMM d 'd'., EEEE");
        formats.put("_lv", "EEEE, d. MMMM");
        formats.put("LV_lv", "EEEE, d. MMMM");
        formats.put("_mk", "EEEE, dd MMMM");
        formats.put("_ms", "EEEE, d MMMM");
        formats.put("_nb", "EEEE d. MMMM");
        formats.put("NO_nb", "EEEE d. MMMM");
        formats.put("_nl", "EEEE d MMMM");
        formats.put("BE_nl", "EEEE d MMMM");
        formats.put("NL_nl", "EEEE d MMMM");
        formats.put("_pl", "EEEE, d MMMM");
        formats.put("PL_pl", "EEEE, d MMMM");
        formats.put("_ps", "EEEE د MMMM d");
        formats.put("_pt", "EEEE, d 'de' MMMM");
        formats.put("BR_pt", "EEEE, d 'de' MMMM");
        formats.put("PT_pt", "EEEE, d 'de' MMMM");
        formats.put("_rm", "EEEE, d. MMMM");
        formats.put("_ro", "EEEE, d MMMM");
        formats.put("RO_ro", "EEEE, d MMMM");
        formats.put("_ru", "EEEE, d MMMM");
        formats.put("RU_ru", "EEEE, d MMMM");
        formats.put("UA_ru", "EEEE, d MMMM");
        formats.put("_sk", "EEEE, d. MMMM");
        formats.put("SK_sk", "EEEE, d. MMMM");
        formats.put("_sl", "EEEE, dd. MMMM");
        formats.put("SI_sl", "EEEE, dd. MMMM");
        formats.put("_sr", "EEEE, dd. MMMM");
        formats.put("BA_sr", "EEEE, dd. MMMM");
        formats.put("CS_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("CYRL_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("LATN_sr", "EEEE, dd. MMMM");
        formats.put("ME_sr", "EEEE, dd. MMMM");
        formats.put("RS_sr", "EEEE, dd. MMMM");
        formats.put("YU_sr", "EEEE, dd. MMMM");
        formats.put("_sv", "EEEE'en' 'den' d:'e' MMMM");
        formats.put("FI_sv", "EEEE'en' 'den' d:'e' MMMM");
        formats.put("SE_sv", "EEEE'en' 'den' d:'e' MMMM");
        formats.put("_sw", "EEEE, d MMMM");
        formats.put("_th", "EEEEที่ d MMMM G");
        formats.put("TH_th", "EEEEที่ d MMMM G");
        formats.put("_tr", "d MMMM EEEE");
        formats.put("TR_tr", "d MMMM EEEE");
        formats.put("_uk", "EEEE, d MMMM");
        formats.put("UA_uk", "EEEE, d MMMM");
        formats.put("_uz", "EEEE, MMMM dd");
        formats.put("_vi", "EEEE, 'ngày' dd MMMM");
        formats.put("VN_vi", "EEEE, 'ngày' dd MMMM");
        formats.put("_zh", "M月d日EEEE");
        formats.put("CN_zh", "M月d日EEEE");
        formats.put("HK_zh", "M月d日EEEE");
        formats.put("HANS_zh", "M月d日EEEE");
        formats.put("HANS_zh", "M月d日EEEE");
        formats.put("HANS_zh", "M月d日EEEE");
        formats.put("HANS_zh", "M月d日EEEE");
        formats.put("HANT_zh", "M月d日EEEE");
        formats.put("HANT_zh", "M月d日EEEE");
        formats.put("HANT_zh", "MM月dd日EEEE");
        formats.put("HANT_zh", "M月d日EEEE");
        formats.put("MO_zh", "MM月dd日EEEE");
        formats.put("SG_zh", "M月d日EEEE");
        formats.put("TW_zh", "M月d日EEEE");
        formats.put("_zu", "EEEE dd MMMM");
    }

    public static String getLongFormatWithoutYear(Locale locale) {
        if (locale != null) {
            String key = locale.getCountry() + "_" + locale.getLanguage();
            String format = formats.get(key);
            if (format != null) {
                return format;
            }
        }
        return DEFAULT_FORMAT;
    }

    public static String getShortFormatWithoutYear(Locale locale) {
        String longFormat = getLongFormatWithoutYear(locale);
        return longFormat.replaceAll("E+", "E").replaceAll("MMMM", "MMM");
    }
}
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  • 既然无缘
    2020-12-25 13:01

    I did it this way:

    DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.SHORT, Locale.getDefault());
if (dateFormat instanceof SimpleDateFormat) {
    SimpleDateFormat simpleDateFormat = (SimpleDateFormat) dateFormat;
    String pattern = simpleDateFormat.toPattern();

    // I modified the pattern here so that dd.MM.yyyy would result to dd.MM

    simpleDateFormat.applyPattern(modifiedPattern);

    ... etc
}
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  • 伪装坚强ぢ
    2020-12-25 13:07

    This will work for Android, in case someone needs it:

    int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_NO_YEAR;
String monthAndDayText = DateUtils.formatDateTime(context, date, flags);
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