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<DATA.length; i+=3) {
                DateFormat df = (DateFormat) DATA[i];
                String desc = (String) DATA[i+1];
                String exp = (String) DATA[i+2];
                String got = df.format(date);
                if (got.equals(exp)) {
                    logln("Ok: " + desc + " => " + got);
                } else {
                    errln("FAIL: " + desc + " => " + got + ", expected " + exp);
                }

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        DateFormat fmt = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, Locale.US);


        c.setTimeInMillis(time);
        int year1 = c.get(Calendar.YEAR);
        
        logln("time: " + fmt.format(new Date(c.getTimeInMillis())));


        logln("setting DOW to " + c.getFirstDayOfWeek());
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
        logln("week: " + c.getTime());
        logln("week adjust: " + fmt.format(new Date(c.getTimeInMillis())));

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        logln("time: " + fmt.format(new Date(c.getTimeInMillis())));


        logln("setting DOW to " + c.getFirstDayOfWeek());
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
        logln("week: " + c.getTime());
        logln("week adjust: " + fmt.format(new Date(c.getTimeInMillis())));
        int year2 = c.get(Calendar.YEAR);
        
        if(year1 != year2) {
            errln("Error: adjusted day of week, and year jumped from " + year1 + " to " + year2);
        } else {

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    public final void testSetCalendar() {
        Calendar cal = Calendar.getInstance();
        cal.setTimeZone(TimeZone.getTimeZone("EST"));
        DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
        df.setCalendar(cal);
        assertEquals("8:17 AM", df.format(aDate));
    }


    /*
     * Test method for 'com.ibm.icu.text.DateFormat.getCalendar()'
     */

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     */
    public final void testSetTimeZone() {
        DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
        TimeZone tz = TimeZone.getTimeZone("EST");
        df.setTimeZone(tz);
        assertEquals("8:17 AM", df.format(aDate));
    }


    /*
     * Test method for 'com.ibm.icu.text.DateFormat.getTimeZone()'
     */

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            //  String str;
            DateFormat df = dateFormats[j];
            df.setTimeZone(PT);
            logln(" Pattern = " + ((SimpleDateFormat) df).toPattern());
            try {
                logln("  Result = " + df.format(aug13));
            } catch (Exception e) {
                errln("FAIL: " + e);
                e.printStackTrace();
                continue;
            }

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            String field;


            for (i = 0; i < DateFormat.FIELD_COUNT; ++i, ++exp) {
                pos = new FieldPosition(i);
                buf.setLength(0);
                df.format(aug13, buf, pos);    
                field = buf.substring(pos.getBeginIndex(), pos.getEndIndex());
                assertEquals("pattern#" + j + " field #" + i + " " + DATEFORMAT_FIELD_NAMES[i],
                             EXPECTED[exp], field);
            }

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            for(i = 0; i < DTFMT_FIELDS.length; i++) {
                // The format method only set position for the first occurrence of
                // the specified field.
                pos = new FieldPosition(DTFMT_FIELDS[i]);
                buf.setLength(0);
                df.format(aug13, buf, pos);
                field = buf.substring(pos.getBeginIndex(), pos.getEndIndex());
                assertEquals("pattern#" + j + " " + DTFMT_FIELDS[i].toString(), EXPECTED_BY_FIELD[j][i], field);
            }
//#endif
        }

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        cal.set(1997, Calendar.JUNE, 15);
        Date june = cal.getTime();
        cal.clear();
        cal.set(1997, Calendar.JULY, 15);
        Date july = cal.getTime();
        String juneStr = fmt.format(june);
        String julyStr = fmt.format(july);
        try {
            logln("format(June 15 1997) = " + juneStr);
            Date d = fmt.parse(juneStr);
            String s = fmt.format(d);

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        Date june = cal.getTime();
        cal.clear();
        cal.set(1997, Calendar.JULY, 15);
        Date july = cal.getTime();
        String juneStr = fmt.format(june);
        String julyStr = fmt.format(july);
        try {
            logln("format(June 15 1997) = " + juneStr);
            Date d = fmt.parse(juneStr);
            String s = fmt.format(d);
            int month, yr, day;

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