Examples of com.ibm.icu.text.DateFormatSymbols

com.ibm.icu.text.DateFormatSymbols
DateFormatSymbols is a public class for encapsulating localizable date-time formatting data, such as the names of the months, the names of the days of the week, and the time zone data. DateFormat and SimpleDateFormat both use DateFormatSymbols to encapsulate this information.
Typically you shouldn't use DateFormatSymbols directly. Rather, you are encouraged to create a date-time formatter with the DateFormat class's factory methods: getTimeInstance, getDateInstance, or getDateTimeInstance. These methods automatically create a DateFormatSymbols for the formatter so that you don't have to. After the formatter is created, you may modify its format pattern using the setPattern method. For more information about creating formatters using DateFormat's factory methods, see {@link DateFormat}.
If you decide to create a date-time formatter with a specific format pattern for a specific locale, you can do so with:
```
 new SimpleDateFormat(aPattern, new DateFormatSymbols(aLocale)). 
```
DateFormatSymbols objects are clonable. When you obtain a DateFormatSymbols object, feel free to modify the date-time formatting data. For instance, you can replace the localized date-time format pattern characters with the ones that you feel easy to remember. Or you can change the representative cities to your favorite ones.
New DateFormatSymbols subclasses may be added to support SimpleDateFormat for date-time formatting for additional locales. @see DateFormat @see SimpleDateFormat @see com.ibm.icu.util.SimpleTimeZone @author Chen-Lieh Huang @stable ICU 2.0

            fDisplayLocale = locale;
            dirty = true;


            for (int i = 0; i < fCalendar.length; i++) {
                if (fCalendar[i] != null) {
                    fSymbols[i] = new DateFormatSymbols(fCalendar[i],
                                                        fDisplayLocale);
                }
            }
            String lang = locale.getLanguage();
            leftToRight = !(lang.equals("iw") || lang.equals("ar"));

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                                               : fCalendar[index].getTime();


        fCalendar[index] = c;
        fCalendar[index].setTime(date);


        fSymbols[index] = new DateFormatSymbols(c, fDisplayLocale);
        dirty = true;
        repaint();
    }

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        // chinese date format patterns
        Calendar chineseCalendar = new ChineseCalendar();
        chineseCalendar.setTimeInMillis((new Date()).getTime());
        SimpleDateFormat longChineseDateFormat = 
            (SimpleDateFormat)chineseCalendar.getDateTimeFormat(DateFormat.LONG, DateFormat.LONG, Locale.CHINA );
        DateFormatSymbols dfs = new ChineseDateFormatSymbols( chineseCalendar, Locale.CHINA );
        longChineseDateFormat.setDateFormatSymbols( dfs );
        // This next line throws the exception
        try {
            longChineseDateFormat.toLocalizedPattern();
        }

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        f = DateFormat.getDateInstance();
        logln("time yet again: " + f.format(now));


        ICUResourceBundle rb = (ICUResourceBundle)UResourceBundle.getBundleInstance(ICUResourceBundle.ICU_BASE_NAME,"de_DE");
        DateFormatSymbols sym = new DateFormatSymbols(rb, Locale.GERMANY);
        DateFormatSymbols sym2 = (DateFormatSymbols)sym.clone();
        if (sym.hashCode() != sym2.hashCode()) {
            errln("fail, date format symbols hashcode not equal");
        }
        if (!sym.equals(sym2)) {
            errln("fail, date format symbols not equal");
        }
        
        Locale foo = new Locale("fu", "FU", "BAR");
        rb = null;
        sym = new DateFormatSymbols(GregorianCalendar.class, foo);
        sym.equals(null);
        
        sym = new ChineseDateFormatSymbols();
        sym = new ChineseDateFormatSymbols(new ChineseCalendar(), foo);
        // cover new ChineseDateFormatSymbols(Calendar, ULocale)
        ChineseCalendar ccal = new ChineseCalendar();
        sym = new ChineseDateFormatSymbols(ccal, ULocale.CHINA); //gclsh1 add
        
        StringBuffer buf = new StringBuffer();
        FieldPosition pos = new FieldPosition(0);
        
        f.format((Object)cal, buf, pos);
        f.format((Object)now, buf, pos);
        f.format((Object)new Long(now.getTime()), buf, pos);
        try {
            f.format((Object)"Howdy", buf, pos);
        }
        catch (Exception e) {
        }


        NumberFormat nf = f.getNumberFormat();
        f.setNumberFormat(nf);
        
        boolean lenient = f.isLenient();
        f.setLenient(lenient);
        
        ULocale uloc = f.getLocale(ULocale.ACTUAL_LOCALE);
        
        DateFormat sdfmt = new SimpleDateFormat();
        
        if (f.hashCode() != f.hashCode()) {
            errln("hashCode is not stable");
        }
        if (!f.equals(f)) {
            errln("f != f");
        }
        if (f.equals(null)) {
            errln("f should not equal null");
        }
        if (f.equals(sdfmt)) {
            errln("A time instance shouldn't equal a default date format");
        }
        
        Date d;
        {
            ChineseDateFormat fmt = new ChineseDateFormat("yymm", Locale.US);
            try {
                fmt.parse("2"); // fewer symbols than required 2
                errln("whoops");
            }
            catch (ParseException e) {
                logln("ok");
            }


            try {
                fmt.parse("2255"); // should succeed with obeycount
                logln("ok");
            }
            catch (ParseException e) {
                errln("whoops");
            }


            try {
                fmt.parse("ni hao"); // not a number, should fail
                errln("whoops ni hao");
            }
            catch (ParseException e) {
                logln("ok ni hao");
            }
        }
        {
            Calendar xcal = new GregorianCalendar();
            xcal.set(Calendar.HOUR_OF_DAY, 0);
            DateFormat fmt = new SimpleDateFormat("k");
            StringBuffer xbuf = new StringBuffer();
            FieldPosition fpos = new FieldPosition(Calendar.HOUR_OF_DAY);
            fmt.format(xcal, xbuf, fpos);
            try {
                fmt.parse(xbuf.toString());
                logln("ok");
                
                xbuf.setLength(0);
                xcal.set(Calendar.HOUR_OF_DAY, 25);
                fmt.format(xcal, xbuf, fpos);
                Date d2 = fmt.parse(xbuf.toString());
                logln("ok again - d2=" + d2);
            }
            catch (ParseException e) {
                errln("whoops");
            }
        }
        
        {
            // cover gmt+hh:mm
            DateFormat fmt = new SimpleDateFormat("MM/dd/yy z");
            try {
                d = fmt.parse("07/10/53 GMT+10:00");
                logln("ok : d = " + d);
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+10:00 for pattern MM/dd/yy z");
            }
            
            // cover invalid separator after GMT
            {
                ParsePosition pp = new ParsePosition(0);
                String text = "07/10/53 GMT=10:00";
                d = fmt.parse(text, pp);
                if(pp.getIndex()!=12){
                    errln("Parse of 07/10/53 GMT=10:00 for pattern MM/dd/yy z");
                }
                logln("Parsing of the text stopped at pos: " + pp.getIndex() + " as expected and length is "+text.length());
            }
            
            // cover bad text after GMT+.
            try {
                fmt.parse("07/10/53 GMT+blecch");
                logln("ok GMT+blecch");
            }
            catch (ParseException e) {
                errln("whoops GMT+blecch");
            }
            
            // cover bad text after GMT+hh:.
            try {
                fmt.parse("07/10/53 GMT+07:blecch");
                logln("ok GMT+xx:blecch");
            }
            catch (ParseException e) {
                errln("whoops GMT+xx:blecch");
            }
            
            // cover no ':' GMT+#, # < 24 (hh)
            try {
                d = fmt.parse("07/10/53 GMT+07");
                logln("ok GMT+07");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+07 for pattern MM/dd/yy z");
            }
            
            // cover no ':' GMT+#, # > 24 (hhmm)
            try {
                d = fmt.parse("07/10/53 GMT+0730");
                logln("ok");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+0730 for pattern MM/dd/yy z");
            }
            
            // cover GMT+#, # with second field
            try {
                d = fmt.parse("07/10/53 GMT+07:30:15");
                logln("ok GMT+07:30:15");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+07:30:15 for pattern MM/dd/yy z");
            }


            // cover no ':' GMT+#, # with second field, no leading zero
            try {
                d = fmt.parse("07/10/53 GMT+73015");
                logln("ok GMT+73015");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+73015 for pattern MM/dd/yy z");
            }


            // cover no ':' GMT+#, # with 1 digit second field
            try {
                d = fmt.parse("07/10/53 GMT+07300");
                logln("ok GMT+07300");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 GMT+07300 for pattern MM/dd/yy z");
            }
            
            // cover raw digits with no leading sign (bad RFC822) 
            try {
                d = fmt.parse("07/10/53 07");
                errln("Parse of 07/10/53 07 for pattern MM/dd/yy z passed!");
            }
            catch (ParseException e) {
                logln("ok");
            }
            
            // cover raw digits (RFC822) 
            try {
                d = fmt.parse("07/10/53 +07");
                logln("ok");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 +07 for pattern MM/dd/yy z failed");
            }
            
            // cover raw digits (RFC822) 
            try {
                d = fmt.parse("07/10/53 -0730");
                logln("ok");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 -00730 for pattern MM/dd/yy z failed");
            }
            
            // cover raw digits (RFC822) in DST
            try {
                fmt.setTimeZone(TimeZone.getTimeZone("PDT"));
                d = fmt.parse("07/10/53 -0730");
                logln("ok");
            }
            catch (ParseException e) {
                errln("Parse of 07/10/53 -0730 for pattern MM/dd/yy z failed");
            }
        }
        
        // TODO: revisit toLocalizedPattern
        if (false) {
            SimpleDateFormat fmt = new SimpleDateFormat("aabbcc");
            try {
                String pat = fmt.toLocalizedPattern();
                errln("whoops, shouldn't have been able to localize aabbcc");
            }
            catch (IllegalArgumentException e) {
                logln("aabbcc localize ok");
            }
        }


        {
            SimpleDateFormat fmt = new SimpleDateFormat("'aabbcc");
            try {
                fmt.toLocalizedPattern();
                errln("whoops, localize unclosed quote");
            }
            catch (IllegalArgumentException e) {
                logln("localize unclosed quote ok");
            }
        }
        {
            SimpleDateFormat fmt = new SimpleDateFormat("MM/dd/yy z");
            String text = "08/15/58 DBDY"; // bogus time zone
            try {
                fmt.parse(text);
                errln("recognized bogus time zone DBDY");
            }
            catch (ParseException e) {
                logln("time zone ex ok");
            }
        }
        
        {
            // force fallback to default timezone when fmt timezone 
            // is not named
            SimpleDateFormat fmt = new SimpleDateFormat("MM/dd/yy z");
            // force fallback to default time zone, still fails
            fmt.setTimeZone(TimeZone.getTimeZone("GMT+0147")); // not in equivalency group
            String text = "08/15/58 DBDY";
            try {
                fmt.parse(text);
                errln("Parse of 07/10/53 DBDY for pattern MM/dd/yy z passed");
            }
            catch (ParseException e) {
                logln("time zone ex2 ok");
            }
            
            // force success on fallback
            text = "08/15/58 " + TimeZone.getDefault().getID();
            try {
                fmt.parse(text);
                logln("found default tz");
            }
            catch (ParseException e) {
                errln("whoops, got parse exception");
            }
        }
        
        {
            // force fallback to symbols list of timezones when neither 
            // fmt and default timezone is named
            SimpleDateFormat fmt = new SimpleDateFormat("MM/dd/yy z");
            TimeZone oldtz = TimeZone.getDefault();
            TimeZone newtz = TimeZone.getTimeZone("GMT+0137"); // nonstandard tz
            fmt.setTimeZone(newtz);
            TimeZone.setDefault(newtz); // todo: fix security issue


            // fallback to symbol list, but fail
            String text = "08/15/58 DBDY"; // try to parse the bogus time zone
            try {
                fmt.parse(text);
                errln("Parse of 07/10/53 DBDY for pattern MM/dd/yy z passed");
            }
            catch (ParseException e) {
                logln("time zone ex3 ok");
            }
            catch (Exception e) {
                // hmmm... this shouldn't happen.  don't want to exit this
                // fn with timezone improperly set, so just in case
                TimeZone.setDefault(oldtz);
                throw new IllegalStateException(e.getMessage());
            }


            // create DFS that recognizes our bogus time zone, sortof
            DateFormatSymbols xsym = new DateFormatSymbols();
            String[][] tzids = xsym.getZoneStrings();
            if (tzids.length > 0) { // let's hope!
                tzids[0][1] = "DBDY"; // change a local name
                logln("replaced '" + tzids[0][0] + "' with DBDY");


                xsym.setZoneStrings(tzids);
                fmt.setDateFormatSymbols(xsym);


                try {
                    fmt.parse(text);
                    logln("we parsed DBDY (as GMT, but still...)");
                }
                catch (ParseException e) {
                    errln("hey, still didn't recognize DBDY");
                }
                finally {
                    TimeZone.setDefault(oldtz);
                }
            }
        }


        {
            //cover getAvailableULocales
            final ULocale[] locales = DateFormat.getAvailableULocales();
            long count = locales.length;
            if (count==0) {
                errln(" got a empty list for getAvailableULocales");
            }else{
                logln("" + count + " available ulocales");            
            }
        }
        
        {
            //cover DateFormatSymbols.getDateFormatBundle
            cal = new GregorianCalendar();
            Locale loc = Locale.getDefault();
            DateFormatSymbols mysym = new DateFormatSymbols(cal, loc);
            if (mysym == null) 
                errln("FAIL: constructs DateFormatSymbols with calendar and locale failed");
            
            uloc = ULocale.getDefault();
            // These APIs are obsolete and return null
            ResourceBundle resb = DateFormatSymbols.getDateFormatBundle(cal, loc);
            ResourceBundle resb2 = DateFormatSymbols.getDateFormatBundle(cal, uloc);
            ResourceBundle resb3 = DateFormatSymbols.getDateFormatBundle(cal.getClass(), loc);
            ResourceBundle resb4 = DateFormatSymbols.getDateFormatBundle(cal.getClass(), uloc);


            if (resb != null) {
                logln("resb is not null");
            }
            if (resb2 != null) {
                logln("resb2 is not null");
            }
            if (resb3 != null) {
                logln("resb3 is not null");
            }
            if (resb4 != null) {
                logln("resb4 is not null");
            }
        }


        {
            //cover DateFormatSymbols.getInstance
            DateFormatSymbols datsym1 = DateFormatSymbols.getInstance();
            DateFormatSymbols datsym2 = new DateFormatSymbols();
            if (!datsym1.equals(datsym2)) {
                errln("FAIL: DateFormatSymbols returned by getInstance()" +
                        "does not match new DateFormatSymbols().");
            }
            datsym1 = DateFormatSymbols.getInstance(Locale.JAPAN);

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            // SimpleDateFormat constructor
            formatters[3] = new SimpleDateFormat(testPattern, testLocales[i]);
 
            // SimpleDateFormat with DateFormatSymbols
            DateFormatSymbols dfs = new DateFormatSymbols(testLocales[i]);
            formatters[4] = new SimpleDateFormat(testPattern, dfs, testLocales[i]);


            // All SimpleDateFormat instances should produce the exact
            // same result.
            String expected = null;

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     */
    protected DateFormat handleGetDateFormat(String pattern, String override, ULocale locale) {
        FormatConfiguration fmtConfig = new FormatConfiguration();
        fmtConfig.pattern = pattern;
        fmtConfig.override = override;
        fmtConfig.formatData = new DateFormatSymbols(this, locale);
        fmtConfig.loc = locale;
        fmtConfig.cal = this;


        return SimpleDateFormat.getInstance(fmtConfig);
    }

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        int i, j, exp;
        StringBuffer buf = new StringBuffer();


        // Verify data
        if (VersionInfo.ICU_VERSION.compareTo(VersionInfo.getInstance(3, 7)) >= 0) {
            DateFormatSymbols rootSyms = new DateFormatSymbols(new Locale("", "", ""));
            assertEquals("patternChars", PATTERN_CHARS, rootSyms.getLocalPatternChars());
        }
        
        assertTrue("DATEFORMAT_FIELD_NAMES", DATEFORMAT_FIELD_NAMES.length == DateFormat.FIELD_COUNT);
        if(DateFormat.FIELD_COUNT != PATTERN_CHARS.length()){
            errln("Did not get the correct value for DateFormat.FIELD_COUNT. Expected:  "+ PATTERN_CHARS.length());

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        cannedShortMonthNames.put("en_US",      en_US_ShortMonthNames);
    }


    private static DateFormatSymbols getCannedDateFormatSymbols(ULocale uloc)
    {
        DateFormatSymbols dfs =new DateFormatSymbols(GregorianCalendar.class, uloc);
        String key = uloc.toString();
        
        dfs.setMonths((String[]) cannedMonthNames.get(key));
        dfs.setShortMonths((String[]) cannedShortMonthNames.get(key));
        
        return dfs;
    }

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        return dfs;
    }
    
    private static SimpleDateFormat getCannedSimpleDateFormat(String pattern, ULocale uloc)
    {
        DateFormatSymbols dfs = getCannedDateFormatSymbols(uloc);
        
        return new SimpleDateFormat(pattern, dfs, uloc);
    }

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                // In ICU3.8, localized GMT format pattern was added in
                // DateFormatSymbols, which has no public setter.
                // The difference of locale data for localized GMT format
                // will produce different format result.  This is a temporary
                // workaround for the issue.
                DateFormatSymbols dfsa = ((SimpleDateFormat)dfa).getDateFormatSymbols();
                DateFormatSymbols tmp = (DateFormatSymbols)((SimpleDateFormat)dfb).getDateFormatSymbols().clone();


                tmp.setMonths(dfsa.getMonths());
                tmp.setShortMonths(dfsa.getShortMonths());
                tmp.setWeekdays(dfsa.getWeekdays());
                tmp.setShortWeekdays(dfsa.getShortWeekdays());
                tmp.setAmPmStrings(dfsa.getAmPmStrings());


                ((SimpleDateFormat)dfa).setDateFormatSymbols(tmp);


                sfa = dfa.format(fixedDate);
            }

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