Examples of com.ibm.icu.text.DateFormat.format()

com.ibm.icu.text.DateFormat.format()
Overrides Format. Formats a time object into a time string. Examples of time objects are a time value expressed in milliseconds and a Date object. @param obj must be a Number or a Date or a Calendar. @param toAppendTo the string buffer for the returning time string. @return the formatted time string. @param fieldPosition keeps track of the position of the fieldwithin the returned string. On input: an alignment field, if desired. On output: the offsets of the alignment field. For example, given a time text "1996.07.10 AD at 15:08:56 PDT", if the given fieldPosition is DateFormat.YEAR_FIELD, the begin index and end index of fieldPosition will be set to 0 and 4, respectively. Notice that if the same time field appears more than once in a pattern, the fieldPosition will be set for the first occurence of that time field. For instance, formatting a Date to the time string "1 PM PDT (Pacific Daylight Time)" using the pattern "h a z (zzzz)" and the alignment field DateFormat.TIMEZONE_FIELD, the begin index and end index of fieldPosition will be set to 5 and 8, respectively, for the first occurence of the timezone pattern character 'z'. @see java.text.Format @stable ICU 2.0

        for (int i = 0; i < TESTZONES.length; i++) {
            for (int m = 0; m < MILLIS.length; m++) {
                TESTZONES[i].getOffsetFromLocal(MILLIS[m], BasicTimeZone.LOCAL_LATTER, BasicTimeZone.LOCAL_FORMER, offsets);
                if (offsets[0] != OFFSETS3[m][0] || offsets[1] != OFFSETS3[m][1]) {
                    errln("Bad offset returned by " + TESTZONES[i].getID() + " at "
                            + df.format(new Date(MILLIS[m])) + "(wall/LATTER/FORMER) - Got: "
                            + offsets[0] + "/" + offsets[1]
                            + " Expected: " + OFFSETS3[m][0] + "/" + OFFSETS3[m][1]);
                }
            }
        }

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            if(fmt) {
                StringBuffer output = new StringBuffer();
                cal.clear();
                FieldPosition pos = new FieldPosition(0);
                if(useDate) {
                    output = format.format(fromDate, output, pos);
                } else {
                    fromSet.setOnCalendar(cal);
                    format.format(cal, output, pos);
                }

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                FieldPosition pos = new FieldPosition(0);
                if(useDate) {
                    output = format.format(fromDate, output, pos);
                } else {
                    fromSet.setOnCalendar(cal);
                    format.format(cal, output, pos);
                }
                
                if(output.toString().equals(str)) {
                    logln(caseString + " Success - strings match: " + output);
                } else {

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        DateFormat fmt = new SimpleDateFormat("MMMM d, yyyy G");
        cal.clear();
        for (int y=-20; y<=10; ++y) {
            cal.set(Calendar.ERA, y < 1 ? GregorianCalendar.BC : GregorianCalendar.AD);
            cal.set(Calendar.YEAR, y < 1 ? 1 - y : y);
            logln(y + " = " + fmt.format(cal.getTime()) + " " +
                               cal.isLeapYear(y));
            if (cal.isLeapYear(y) != ((y+40)%4 == 0))
                errln("Leap years broken");
        }
    }

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                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++) {

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                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;

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                    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]) {
                        errln("  FAIL: " + newYear + " should be valid; date, month and time shouldn't change");
                    } else if (!valid && newYear == years[i]) {
                        // We no longer require strict year maxima. That is, the
                        // calendar

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        for (int i=0; i<DATA.length; ) {
            cal.set(DATA[i++], DATA[i++], DATA[i++]);
            int expWOY = DATA[i++];
            int actWOY = cal.get(Calendar.WEEK_OF_YEAR);
            if (expWOY == actWOY) {
                logln("Ok: " + fmt.format(cal.getTime()));
            } else {
                errln("FAIL: " + fmt.format(cal.getTime())
                      + ", expected WOY=" + expWOY);
                cal.add(Calendar.DATE, -8);
                for (int j=0; j<14; ++j) {

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            int expWOY = DATA[i++];
            int actWOY = cal.get(Calendar.WEEK_OF_YEAR);
            if (expWOY == actWOY) {
                logln("Ok: " + fmt.format(cal.getTime()));
            } else {
                errln("FAIL: " + fmt.format(cal.getTime())
                      + ", expected WOY=" + expWOY);
                cal.add(Calendar.DATE, -8);
                for (int j=0; j<14; ++j) {
                    cal.add(Calendar.DATE, 1);
                    logln(fmt.format(cal.getTime()));

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                errln("FAIL: " + fmt.format(cal.getTime())
                      + ", expected WOY=" + expWOY);
                cal.add(Calendar.DATE, -8);
                for (int j=0; j<14; ++j) {
                    cal.add(Calendar.DATE, 1);
                    logln(fmt.format(cal.getTime()));
                }
            }
        }
    }

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