Examples of com.ibm.icu.util.GregorianCalendar

com.ibm.icu.util.GregorianCalendar
the supported ids for GMT-08:00 (Pacific Standard Time) String[] ids = TimeZone.getAvailableIDs(-8 * 60 * 60 * 1000); // if no ids were returned, something is wrong. get out. if (ids.length == 0) System.exit(0); // begin output System.out.println("Current Time"); // create a Pacific Standard Time time zone SimpleTimeZone pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, ids[0]); // set up rules for daylight savings time pdt.setStartRule(Calendar.MARCH, 2, Calendar.SUNDAY, 2 * 60 * 60 * 1000); pdt.setEndRule(Calendar.NOVEMBER, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000); // create a GregorianCalendar with the Pacific Daylight time zone // and the current date and time Calendar calendar = new GregorianCalendar(pdt); Date trialTime = new Date(); calendar.setTime(trialTime); // print out a bunch of interesting things System.out.println("ERA: " + calendar.get(Calendar.ERA)); System.out.println("YEAR: " + calendar.get(Calendar.YEAR)); System.out.println("MONTH: " + calendar.get(Calendar.MONTH)); System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR)); System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH)); System.out.println("DATE: " + calendar.get(Calendar.DATE)); System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH)); System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR)); System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK)); System.out.println("DAY_OF_WEEK_IN_MONTH: " + calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH)); System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM)); System.out.println("HOUR: " + calendar.get(Calendar.HOUR)); System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY)); System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE)); System.out.println("SECOND: " + calendar.get(Calendar.SECOND)); System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND)); System.out.println("ZONE_OFFSET: " + (calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000))); System.out.println("DST_OFFSET: " + (calendar.get(Calendar.DST_OFFSET)/(60*60*1000))); System.out.println("Current Time, with hour reset to 3"); calendar.clear(Calendar.HOUR_OF_DAY); // so doesn't override calendar.set(Calendar.HOUR, 3); System.out.println("ERA: " + calendar.get(Calendar.ERA)); System.out.println("YEAR: " + calendar.get(Calendar.YEAR)); System.out.println("MONTH: " + calendar.get(Calendar.MONTH)); System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR)); System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH)); System.out.println("DATE: " + calendar.get(Calendar.DATE)); System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH)); System.out.println("DAY_OF_YEAR: " + calendar.get(Calendar.DAY_OF_YEAR)); System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK)); System.out.println("DAY_OF_WEEK_IN_MONTH: " + calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH)); System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM)); System.out.println("HOUR: " + calendar.get(Calendar.HOUR)); System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY)); System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE)); System.out.println("SECOND: " + calendar.get(Calendar.SECOND)); System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND)); System.out.println("ZONE_OFFSET: " + (calendar.get(Calendar.ZONE_OFFSET)/(60*60*1000))); // in hours System.out.println("DST_OFFSET: " + (calendar.get(Calendar.DST_OFFSET)/(60*60*1000))); // in hours
GregorianCalendar usually should be instantiated using {@link com.ibm.icu.util.Calendar#getInstance(ULocale)} passing in a ULocalewith the tag "@calendar=gregorian".
@see Calendar @see TimeZone @author David Goldsmith, Mark Davis, Chen-Lieh Huang, Alan Liu @stable ICU 2.0

        
        {
            SimpleDateFormat fmt = new SimpleDateFormat("dd/MM/yy"); // opposite of text
            fmt.set2DigitYearStart(getDate(2003, Calendar.DECEMBER, 25));
            String text = "12/25/03";
            Calendar xcal = new GregorianCalendar();
            xcal.setLenient(false);
            ParsePosition pp = new ParsePosition(0);
            fmt.parse(text, xcal, pp); // should get parse error on second field, not lenient
            if (pp.getErrorIndex() == -1) {
                errln("Expected parse error");
            } else {

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        }
    }


    public void TestCoverage() {
        Date now = new Date();
        Calendar cal = new GregorianCalendar();
        DateFormat f = DateFormat.getTimeInstance();
        logln("time: " + f.format(now));


        int hash = f.hashCode(); // sigh, everyone overrides this
        
        f = DateFormat.getInstance(cal);
        if(hash == f.hashCode()){
            errln("FAIL: hashCode equal for inequal objects");
        }
        logln("time again: " + f.format(now));


        f = DateFormat.getTimeInstance(cal, DateFormat.FULL);
        logln("time yet again: " + f.format(now));


        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");

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    public void TestRoundtripWithCalendar() {
        TimeZone tz = TimeZone.getTimeZone("Europe/Paris");
        TimeZone gmt = TimeZone.getTimeZone("Etc/GMT");


        final Calendar[] calendars = {
            new GregorianCalendar(tz),
            new BuddhistCalendar(tz),
            new HebrewCalendar(tz),
            new IslamicCalendar(tz),
            new JapaneseCalendar(tz),
        };

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         * 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
         */
        boolean passed = true;
        int field = Calendar.WEEK_OF_MONTH;


        GregorianCalendar calendar = new GregorianCalendar(Locale.US);
        calendar.set(1998, Calendar.MARCH, 1);
        calendar.setMinimalDaysInFirstWeek(1);
        logln("Date:  " + calendar.getTime());


        int firstInMonth = calendar.get(Calendar.DAY_OF_MONTH);


        for (int firstInWeek = Calendar.SUNDAY; firstInWeek <= Calendar.SATURDAY; firstInWeek++) {
            calendar.setFirstDayOfWeek(firstInWeek);
            int returned = calendar.getActualMaximum(field);
            int expected = (31 + ((firstInMonth - firstInWeek + 7)% 7) + 6) / 7;


            logln("First day of week = " + firstInWeek +
                  "  getActualMaximum(WEEK_OF_MONTH) = " + returned +
                  "  expected = " + expected +

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    // based on TestRelativeDateFormat() in icu/trunk/source/test/cintltst/cdattst.c
    public void TestRelativeDateFormat() {
        ULocale loc = ULocale.US;
        TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
        Calendar cal = new GregorianCalendar(tz, loc);
        Date now = new Date();
        cal.setTime(now);
        cal.set(Calendar.HOUR_OF_DAY, 18);
        cal.set(Calendar.MINUTE, 49);
        cal.set(Calendar.SECOND, 0);
        Date today = cal.getTime();
        String minutesStr = "49"; // minutes string to search for in formatted result
        int[] dateStylesList = { DateFormat.RELATIVE_FULL, DateFormat.RELATIVE_LONG, DateFormat.RELATIVE_MEDIUM, DateFormat.RELATIVE_SHORT };


        for (int i = 0; i < dateStylesList.length; i++) {
            int dateStyle = dateStylesList[i];
            DateFormat fmtRelDateTime = DateFormat.getDateTimeInstance(dateStyle, DateFormat.SHORT, loc);
            DateFormat fmtRelDate = DateFormat.getDateInstance(dateStyle, loc);
            DateFormat fmtTime = DateFormat.getTimeInstance(DateFormat.SHORT, loc);


            for (int dayOffset = -2; dayOffset <= 2; dayOffset++ ) {
                StringBuffer dateTimeStr = new StringBuffer(64);
                StringBuffer dateStr = new StringBuffer(64);
                StringBuffer timeStr = new StringBuffer(64);
                FieldPosition fp = new FieldPosition(DateFormat.MINUTE_FIELD);
                cal.setTime(today);
                cal.add(Calendar.DATE, dayOffset);


                fmtRelDateTime.format(cal, dateTimeStr, fp);
                fmtRelDate.format(cal, dateStr, new FieldPosition(0) );
                fmtTime.format(cal, timeStr, new FieldPosition(0) );

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    public void Test4167060() {
        int field = Calendar.YEAR;
        DateFormat format = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy G",
                                                 Locale.US);


        GregorianCalendar calendars[] = {
            new GregorianCalendar(100, Calendar.NOVEMBER, 1),
            new GregorianCalendar(-99 /* 100BC */, Calendar.JANUARY, 1),
            new GregorianCalendar(1996, Calendar.FEBRUARY, 29),
        };


        String[] id = { "Hybrid", "Gregorian", "Julian" };


        for (int k=0; k<3; ++k) {
            logln("--- " + id[k] + " ---");


            for (int j=0; j<calendars.length; ++j) {
                GregorianCalendar calendar = calendars[j];
                if (k == 1) {
                    calendar.setGregorianChange(new Date(Long.MIN_VALUE));
                } else if (k == 2) {
                    calendar.setGregorianChange(new Date(Long.MAX_VALUE));
                }


                format.setCalendar((Calendar)calendar.clone());


                Date dateBefore = calendar.getTime();


                int maxYear = calendar.getActualMaximum(field);
                logln("maxYear: " + maxYear + " for " + format.format(calendar.getTime()));
                logln("date before: " + format.format(dateBefore));


                int years[] = {2000, maxYear-1, maxYear, maxYear+1};


                for (int i = 0; i < years.length; i++) {
                    boolean valid = years[i] <= maxYear;
                    calendar.set(field, years[i]);
                    Date dateAfter = calendar.getTime();
                    int newYear = calendar.get(field);
                    calendar.setTime(dateBefore); // restore calendar for next
                                                  // use


                    logln(" Year " + years[i] + (valid? " ok " : " bad") +
                          " => " + format.format(dateAfter));
                    if (valid && newYear != years[i]) {

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    public void Test6880() {
        Date d1, d2, dp1, dp2, dexp1, dexp2;
        String s1, s2;


        TimeZone tz = TimeZone.getTimeZone("Asia/Shanghai");
        GregorianCalendar gcal = new GregorianCalendar(tz);


        gcal.clear();
        gcal.set(1910, Calendar.JANUARY, 1, 12, 00);    // offset 8:05:52
        d1 = gcal.getTime();


        gcal.clear();
        gcal.set(1950, Calendar.JANUARY, 1, 12, 00);    // offset 8:00
        d2 = gcal.getTime();


        gcal.clear();
        gcal.set(1970, Calendar.JANUARY, 1, 12, 00);
        dexp2 = gcal.getTime();
        dexp1 = new Date(dexp2.getTime() - (5*60 + 52)*1000);   // subtract 5m52s


        DateFormat fmt = DateFormat.getTimeInstance(DateFormat.FULL, new ULocale("zh"));
        fmt.setTimeZone(tz);

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        }
        
        public boolean hasSameBehavior(Object a, Object b)
        {
            GregorianCalendar cal = new GregorianCalendar();
            TimeZoneAdapter tza_a = (TimeZoneAdapter) a;
            TimeZoneAdapter tza_b = (TimeZoneAdapter) b;
            
            int a_offset, b_offset;
            boolean a_dst, b_dst;
            boolean bSame = true;
            for (int i = 0; i < sampleTimes.length; i++) {
                cal.setTimeInMillis(sampleTimes[i]);
                int era = cal.get(Calendar.ERA);
                int year = cal.get(Calendar.YEAR);
                int month = cal.get(Calendar.MONTH);
                int day = cal.get(Calendar.DAY_OF_MONTH);
                int dow = cal.get(Calendar.DAY_OF_WEEK);
                int mid = cal.get(Calendar.MILLISECONDS_IN_DAY);
                a_offset = tza_a.getOffset(era, year, month, day, dow, mid);
                b_offset = tza_b.getOffset(era, year, month, day, dow, mid);
                Date d = new Date(sampleTimes[i]);
                a_dst = tza_a.inDaylightTime(d);
                b_dst = tza_b.inDaylightTime(d);

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        int fieldsList[][] = {
            { 1997, Calendar.FEBRUARY,  1, 10, 45, 15, 900 },
            { 1999, Calendar.DECEMBER, 22, 23, 59, 59, 999 }
        };
        int limit = 40;
        GregorianCalendar cal = new GregorianCalendar();


        cal.setTime(new Date(0));
        cal.roll(Calendar.HOUR,  0x7F000000);
        cal.roll(Calendar.HOUR, -0x7F000000);
        if (cal.getTime().getTime() != 0) {
            errln("Hour rolling broken");
        }


        for (int op=0; op<2; ++op) {
            logln("Testing GregorianCalendar " +
                  (op==0 ? "add" : "roll"));
            for (int field=0; field < cal.getFieldCount(); ++field) {
                if (field != Calendar.ZONE_OFFSET &&
                    field != Calendar.DST_OFFSET) {
                    for (int j=0; j<fieldsList.length; ++j) {
                        int fields[] = fieldsList[j];
                        cal.clear();
                        cal.set(fields[0], fields[1], fields[2],
                                fields[3], fields[4], fields[5]);
                        cal.set(Calendar.MILLISECOND, fields[6]);
                        cal.setMinimalDaysInFirstWeek(1);
                        for (int i = 0; i < 2*limit; i++) {
                            if (op == 0) {
                                cal.add(field, i < limit ? 1 : -1);
                            } else {
                                cal.roll(field, i < limit ? 1 : -1);
                            }
                        }
                        if (cal.get(Calendar.YEAR) != fields[0] ||
                            cal.get(Calendar.MONTH) != fields[1] ||
                            cal.get(Calendar.DATE) != fields[2] ||
                            cal.get(Calendar.HOUR_OF_DAY) != fields[3] ||
                            cal.get(Calendar.MINUTE) != fields[4] ||
                            cal.get(Calendar.SECOND) != fields[5] ||
                            cal.get(Calendar.MILLISECOND) != fields[6]) {
                            errln("Field " + field +
                                  " (" + FIELD_NAME[field] +
                                  ") FAIL, expected " +
                                  fields[0] +
                                  "/" + (fields[1] + 1) +
                                  "/" + fields[2] +
                                  " " + fields[3] +
                                  ":" + fields[4] +
                                  ":" + fields[5] +
                                  "." + fields[6] +
                                  ", got " + cal.get(Calendar.YEAR) +
                                  "/" + (cal.get(Calendar.MONTH) + 1) +
                                  "/" + cal.get(Calendar.DATE) +
                                  " " + cal.get(Calendar.HOUR_OF_DAY) +
                                  ":" + cal.get(Calendar.MINUTE) +
                                  ":" + cal.get(Calendar.SECOND) +
                                  "." + cal.get(Calendar.MILLISECOND));
                            cal.clear();
                            cal.set(fields[0], fields[1], fields[2],
                                    fields[3], fields[4], fields[5]);
                            cal.set(Calendar.MILLISECOND, fields[6]);
                            logln("Start date: " + cal.get(Calendar.YEAR) +
                                  "/" + (cal.get(Calendar.MONTH) + 1) +
                                  "/" + cal.get(Calendar.DATE) +
                                  " " + cal.get(Calendar.HOUR_OF_DAY) +
                                  ":" + cal.get(Calendar.MINUTE) +
                                  ":" + cal.get(Calendar.SECOND) +
                                  "." + cal.get(Calendar.MILLISECOND));
                            long prev = cal.getTime().getTime();
                            for (int i = 0; i < 2*limit; i++) {
                                if (op == 0) {
                                    cal.add(field, i < limit ? 1 : -1);
                                } else {
                                    cal.roll(field, i < limit ? 1 : -1);
                                }
                                long t = cal.getTime().getTime();
                                long delta = t - prev;
                                prev = t;
                                logln((op == 0 ? "add(" : "roll(") + FIELD_NAME[field] +
                                      (i < limit ? ", +1) => " : ", -1) => ") +
                                      cal.get(Calendar.YEAR) +
                                      "/" + (cal.get(Calendar.MONTH) + 1) +
                                      "/" + cal.get(Calendar.DATE) +
                                      " " + cal.get(Calendar.HOUR_OF_DAY) +
                                      ":" + cal.get(Calendar.MINUTE) +
                                      ":" + cal.get(Calendar.SECOND) +
                                      "." + cal.get(Calendar.MILLISECOND) +
                                      " delta=" + delta + " ms");
                            }
                        }
                    }
                }

View Full Code Here

            }
        }
    }


    public void Test4174361() {
        GregorianCalendar calendar = new GregorianCalendar(1996, 1, 29);


        calendar.add(Calendar.MONTH, 10); 
        //Date date1 = calendar.getTime();
        //date1 = null;
        int d1 = calendar.get(Calendar.DAY_OF_MONTH);


        calendar = new GregorianCalendar(1996, 1, 29);
        calendar.add(Calendar.MONTH, 11); 
        //Date date2 = calendar.getTime();
        //date2 = null;
        int d2 = calendar.get(Calendar.DAY_OF_MONTH);


        if (d1 != d2) {
            errln("adding months to Feb 29 broken");
        }
    }

View Full Code Here

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