java.text.FieldPosition Java Examples

/**
 * Formats an object and appends the result to a StringBuffer.
 * <code>obj</code> must be either a  {@link BigFraction} object or a
 * {@link BigInteger} object or a {@link Number} object. Any other type of
 * object will result in an {@link IllegalArgumentException} being thrown.
 *
 * @param obj the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * @throws MathIllegalArgumentException if <code>obj</code> is not a valid type.
 */
@Override
public StringBuffer format(final Object obj,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    final StringBuffer ret;
    if (obj instanceof BigFraction) {
        ret = format((BigFraction) obj, toAppendTo, pos);
    } else if (obj instanceof BigInteger) {
        ret = format(new BigFraction((BigInteger) obj), toAppendTo, pos);
    } else if (obj instanceof Number) {
        ret = format(new BigFraction(((Number) obj).doubleValue()),
                     toAppendTo, pos);
    } else {
        throw new MathIllegalArgumentException(LocalizedFormats.CANNOT_FORMAT_OBJECT_TO_FRACTION);
    }

    return ret;
}
 

/**
 * Formats an object and appends the result to a StringBuffer.
 * <code>obj</code> must be either a  {@link BigFraction} object or a
 * {@link BigInteger} object or a {@link Number} object. Any other type of
 * object will result in an {@link IllegalArgumentException} being thrown.
 *
 * @param obj the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * @throws IllegalArgumentException is <code>obj</code> is not a valid type.
 */
@Override
public StringBuffer format(final Object obj,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    final StringBuffer ret;
    if (obj instanceof BigFraction) {
        ret = format((BigFraction) obj, toAppendTo, pos);
    } else if (obj instanceof BigInteger) {
        ret = format(new BigFraction((BigInteger) obj), toAppendTo, pos);
    } else if (obj instanceof Number) {
        ret = format(new BigFraction(((Number) obj).doubleValue()),
                     toAppendTo, pos);
    } else {
        throw MathRuntimeException.createIllegalArgumentException(
            "cannot format given object as a fraction number");
    }

    return ret;
}
 

@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
    Objects.requireNonNull(obj, "obj");
    Objects.requireNonNull(toAppendTo, "toAppendTo");
    Objects.requireNonNull(pos, "pos");
    if (obj instanceof TemporalAccessor == false) {
        throw new IllegalArgumentException("Format target must implement TemporalAccessor");
    }
    pos.setBeginIndex(0);
    pos.setEndIndex(0);
    try {
        formatter.formatTo((TemporalAccessor) obj, toAppendTo);
    } catch (RuntimeException ex) {
        throw new IllegalArgumentException(ex.getMessage(), ex);
    }
    return toAppendTo;
}
 

/**
 * Formats a {@link BigFraction} object to produce a string.  The BigFraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(final BigFraction fraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    BigInteger num = fraction.getNumerator();
    BigInteger den = fraction.getDenominator();
    BigInteger whole = num.divide(den);
    num = num.remainder(den);

    if (!BigInteger.ZERO.equals(whole)) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        if (num.compareTo(BigInteger.ZERO) < 0) {
            num = num.negate();
        }
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo, pos);

    return toAppendTo;
}
 

/**
 * Formats the specified number as a hexadecimal string.  The decimal
 * fraction is ignored.
 *
 * @param number  the number to format.
 * @param toAppendTo  the buffer to append to (ignored here).
 * @param pos  the field position (ignored here).
 *
 * @return The string buffer.
 */
@Override
public StringBuffer format(long number, StringBuffer toAppendTo,
        FieldPosition pos) {
    String l_hex = Long.toHexString(number).toUpperCase();

    int l_pad = this.m_numDigits - l_hex.length();
    l_pad = (0 < l_pad) ? l_pad : 0;

    StringBuffer l_extended = new StringBuffer("0x");
    for (int i = 0; i < l_pad; i++) {
        l_extended.append(0);
    }
    l_extended.append(l_hex);

    return l_extended;
}
 

/**
 * Formats a date or time, which is the standard millis
 * since January 1, 1970, 00:00:00 GMT.
 * <p>Example: using the US locale:
 * "yyyy.MM.dd G 'at' HH:mm:ss zzz" -&gt;&gt; 1996.07.10 AD at 15:08:56 PDT
 * @param cal the calendar whose date-time value is to be formatted into a date-time string
 * @param toAppendTo where the new date-time text is to be appended
 * @param pos the formatting position. On input: an alignment field,
 * if desired. On output: the offsets of the alignment field.
 * @return the formatted date-time string.
 * @see DateFormat
 */
@Override
public StringBuffer format(Calendar cal, StringBuffer toAppendTo,
                           FieldPosition pos) {
    TimeZone backupTZ = null;
    if (cal != calendar && !cal.getType().equals(calendar.getType())) {
        // Different calendar type
        // We use the time and time zone from the input calendar, but
        // do not use the input calendar for field calculation.
        calendar.setTimeInMillis(cal.getTimeInMillis());
        backupTZ = calendar.getTimeZone();
        calendar.setTimeZone(cal.getTimeZone());
        cal = calendar;
    }
    StringBuffer result = format(cal, getContext(DisplayContext.Type.CAPITALIZATION), toAppendTo, pos, null);
    if (backupTZ != null) {
        // Restore the original time zone
        calendar.setTimeZone(backupTZ);
    }
    return result;
}
 

/**
 * Formats a {@link BigFraction} object to produce a string.  The BigFraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(final BigFraction fraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    BigInteger num = fraction.getNumerator();
    BigInteger den = fraction.getDenominator();
    BigInteger whole = num.divide(den);
    num = num.remainder(den);

    if (!BigInteger.ZERO.equals(whole)) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        if (num.compareTo(BigInteger.ZERO) < 0) {
            num = num.negate();
        }
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo, pos);

    return toAppendTo;
}
 

/**
 * Tests the field position while formatting an angle.
 */
@Test
public void testFieldPosition() {
    final Latitude latitude = new Latitude(FormattedCharacterIteratorTest.LATITUDE_VALUE);
    final AngleFormat f = new AngleFormat("DD°MM′SS.s″", Locale.CANADA);
    final StringBuffer buffer = new StringBuffer();
    for (int i=AngleFormat.DEGREES_FIELD; i<=AngleFormat.HEMISPHERE_FIELD; i++) {
        final AngleFormat.Field field;
        final int start, limit;
        switch (i) {
            case AngleFormat.DEGREES_FIELD:    field = AngleFormat.Field.DEGREES;    start= 0; limit= 3;  break;
            case AngleFormat.MINUTES_FIELD:    field = AngleFormat.Field.MINUTES;    start= 3; limit= 6;  break;
            case AngleFormat.SECONDS_FIELD:    field = AngleFormat.Field.SECONDS;    start= 6; limit=11; break;
            case AngleFormat.HEMISPHERE_FIELD: field = AngleFormat.Field.HEMISPHERE; start=11; limit=12; break;
            default: continue; // Skip the fraction field.
        }
        final FieldPosition pos = new FieldPosition(field);
        assertEquals(FormattedCharacterIteratorTest.LATITUDE_STRING, f.format(latitude, buffer, pos).toString());
        assertSame  ("getFieldAttribute", field, pos.getFieldAttribute());
        assertEquals("getBeginIndex",     start, pos.getBeginIndex());
        assertEquals("getEndIndex",       limit, pos.getEndIndex());
        buffer.setLength(0);
    }
}
 

public StringBuffer format(Object number, StringBuffer toAppendTo, FieldPosition pos) {
    final double value;
    if (number instanceof Number) {
        value = ((Number)number).doubleValue();
        if (Double.isInfinite(value) || Double.isNaN(value)) {
            return integerFormat.format(number, toAppendTo, pos);
        }
    } else {
        // testBug54786 gets here with a date, so retain previous behaviour
        return integerFormat.format(number, toAppendTo, pos);
    }

    final double abs = Math.abs(value);
    if (abs >= 1E11 || (abs <= 1E-10 && abs > 0)) {
        return scientificFormat.format(number, toAppendTo, pos);
    } else if (Math.floor(value) == value || abs >= 1E10) {
        // integer, or integer portion uses all 11 allowed digits
        return integerFormat.format(number, toAppendTo, pos);
    }
    // Non-integers of non-scientific magnitude are formatted as "up to 11
    // numeric characters, with the decimal point counting as a numeric
    // character". We know there is a decimal point, so limit to 10 digits.
    // https://support.microsoft.com/en-us/kb/65903
    final double rounded = new BigDecimal(value).round(TO_10_SF).doubleValue();
    return decimalFormat.format(rounded, toAppendTo, pos);
}
 

/**
 * Formats the specified number as a hexadecimal string.  The decimal
 * fraction is ignored.
 *
 * @param number  the number to format.
 * @param toAppendTo  the buffer to append to (ignored here).
 * @param pos  the field position (ignored here).
 *
 * @return The string buffer.
 */
@Override
public StringBuffer format(long number, StringBuffer toAppendTo,
        FieldPosition pos) {
    String l_hex = Long.toHexString(number).toUpperCase();

    int l_pad = this.m_numDigits - l_hex.length();
    l_pad = (0 < l_pad) ? l_pad : 0;

    StringBuffer l_extended = new StringBuffer("0x");
    for (int i = 0; i < l_pad; i++) {
        l_extended.append(0);
    }
    l_extended.append(l_hex);

    return l_extended;
}
 

/**
 * Formats a {@link Fraction} object to produce a string.  The fraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(Fraction fraction, StringBuffer toAppendTo,
        FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    int num = fraction.getNumerator();
    int den = fraction.getDenominator();
    int whole = num / den;
    num = num % den;

    if (whole != 0) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        num = Math.abs(num);
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo,
        pos);

    return toAppendTo;
}
 

/**
 * Formats an object and appends the result to a StringBuffer. <code>obj</code> must be either a 
 * {@link Fraction} object or a {@link Number} object.  Any other type of
 * object will result in an {@link IllegalArgumentException} being thrown.
 *
 * @param obj the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * @throws IllegalArgumentException is <code>obj</code> is not a valid type.
 */
@Override
public StringBuffer format(final Object obj,
                           final StringBuffer toAppendTo, final FieldPosition pos) {
    StringBuffer ret = null;
    
    if (obj instanceof Fraction) {
        ret = format((Fraction) obj, toAppendTo, pos);
    } else if (obj instanceof Number) {
        try {
            ret = format(new Fraction(((Number) obj).doubleValue()),
                         toAppendTo, pos);
        } catch (ConvergenceException ex) {
            throw MathRuntimeException.createIllegalArgumentException(
                "cannot convert given object to a fraction number: {0}",
                ex.getLocalizedMessage());
        }
    } else { 
        throw MathRuntimeException.createIllegalArgumentException(
            "cannot format given object as a fraction number");
    }
    
    return ret;
}
 

/**
   Appends to <code>sbuf</code> the date in the format "dd MMM yyyy
   HH:mm:ss,SSS" for example, "06 Nov 1994 08:49:37,459".

   @param sbuf the string buffer to write to
*/
public
StringBuffer format(Date date, StringBuffer sbuf,
      FieldPosition fieldPosition) {

  calendar.setTime(date);

  int day = calendar.get(Calendar.DAY_OF_MONTH);
  if(day < 10)
    sbuf.append('0');
  sbuf.append(day);
  sbuf.append(' ');
  sbuf.append(shortMonths[calendar.get(Calendar.MONTH)]);
  sbuf.append(' ');

  int year =  calendar.get(Calendar.YEAR);
  sbuf.append(year);
  sbuf.append(' ');

  return super.format(date, sbuf, fieldPosition);
}
 

@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
    Objects.requireNonNull(obj, "obj");
    Objects.requireNonNull(toAppendTo, "toAppendTo");
    Objects.requireNonNull(pos, "pos");
    if (obj instanceof TemporalAccessor == false) {
        throw new IllegalArgumentException("Format target must implement TemporalAccessor");
    }
    pos.setBeginIndex(0);
    pos.setEndIndex(0);
    try {
        formatter.formatTo((TemporalAccessor) obj, toAppendTo);
    } catch (RuntimeException ex) {
        throw new IllegalArgumentException(ex.getMessage(), ex);
    }
    return toAppendTo;
}
 

/**
 * Formats a object to produce a string.  <code>obj</code> must be either a
 * {@link Complex} object or a {@link Number} object.  Any other type of
 * object will result in an {@link IllegalArgumentException} being thrown.
 *
 * @param obj the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * @throws IllegalArgumentException is <code>obj</code> is not a valid type.
 */
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo,
        FieldPosition pos) {

    StringBuffer ret = null;

    if (obj instanceof Complex) {
        ret = format( (Complex)obj, toAppendTo, pos);
    } else if (obj instanceof Number) {
        ret = format( new Complex(((Number)obj).doubleValue(), 0.0),
            toAppendTo, pos);
    } else {
        throw MathRuntimeException.createIllegalArgumentException(
              "cannot format a {0} instance as a complex number",
              obj.getClass().getName());
    }

    return ret;
}
 

/**
 * Formats a {@link Fraction} object to produce a string.  The fraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(Fraction fraction, StringBuffer toAppendTo,
        FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    int num = fraction.getNumerator();
    int den = fraction.getDenominator();
    int whole = num / den;
    num = num % den;

    if (whole != 0) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        num = Math.abs(num);
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo,
        pos);

    return toAppendTo;
}
 

private StringBuilder formatMeasure(
        Measure measure,
        ImmutableNumberFormat nf,
        StringBuilder appendTo,
        FieldPosition fieldPosition) {
    Number n = measure.getNumber();
    MeasureUnit unit = measure.getUnit();
    if (unit instanceof Currency) {
        return appendTo.append(
                currencyFormat.format(
                        new CurrencyAmount(n, (Currency) unit),
                        new StringBuffer(),
                        fieldPosition));

    }
    StringBuffer formattedNumber = new StringBuffer();
    StandardPlural pluralForm = QuantityFormatter.selectPlural(
            n, nf.nf, rules, formattedNumber, fieldPosition);
    String formatter = getPluralFormatter(unit, formatWidth, pluralForm.ordinal());
    return QuantityFormatter.format(formatter, formattedNumber, appendTo, fieldPosition);
}
 

/**
 * Formats a {@link BigFraction} object to produce a string.  The BigFraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(final BigFraction fraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    BigInteger num = fraction.getNumerator();
    BigInteger den = fraction.getDenominator();
    BigInteger whole = num.divide(den);
    num = num.remainder(den);

    if (!BigInteger.ZERO.equals(whole)) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        if (num.compareTo(BigInteger.ZERO) < 0) {
            num = num.negate();
        }
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo, pos);

    return toAppendTo;
}
 

/**
 * Formats a {@link BigFraction} object to produce a string.  The BigFraction
 * is output in proper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
@Override
public StringBuffer format(final BigFraction fraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    BigInteger num = fraction.getNumerator();
    BigInteger den = fraction.getDenominator();
    BigInteger whole = num.divide(den);
    num = num.remainder(den);

    if (!BigInteger.ZERO.equals(whole)) {
        getWholeFormat().format(whole, toAppendTo, pos);
        toAppendTo.append(' ');
        if (num.compareTo(BigInteger.ZERO) < 0) {
            num = num.negate();
        }
    }
    getNumeratorFormat().format(num, toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(den, toAppendTo, pos);

    return toAppendTo;
}
 

/**
 * Formats a {@link RealVector} object to produce a string.
 * @param vector the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
public StringBuffer format(RealVector vector, StringBuffer toAppendTo,
                           FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    // format prefix
    toAppendTo.append(prefix);

    // format components
    for (int i = 0; i < vector.getDimension(); ++i) {
        if (i > 0) {
            toAppendTo.append(separator);
        }
        formatDouble(vector.getEntry(i), format, toAppendTo, pos);
    }

    // format suffix
    toAppendTo.append(suffix);

    return toAppendTo;

}
 

/**
 * Formats a object to produce a string.  <code>obj</code> must be either a
 * {@link Complex} object or a {@link Number} object.  Any other type of
 * object will result in an {@link IllegalArgumentException} being thrown.
 *
 * @param obj the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * @throws IllegalArgumentException is <code>obj</code> is not a valid type.
 */
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo,
        FieldPosition pos) {

    StringBuffer ret = null;

    if (obj instanceof Complex) {
        ret = format( (Complex)obj, toAppendTo, pos);
    } else if (obj instanceof Number) {
        ret = format( new Complex(((Number)obj).doubleValue(), 0.0),
            toAppendTo, pos);
    } else {
        throw MathRuntimeException.createIllegalArgumentException(
              "cannot format a {0} instance as a complex number",
              obj.getClass().getName());
    }

    return ret;
}
 

/**
 * Formats a {@link Fraction} object to produce a string.  The fraction is
 * output in improper format.
 *
 * @param fraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
public StringBuffer format(final Fraction fraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    getNumeratorFormat().format(fraction.getNumerator(), toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(fraction.getDenominator(), toAppendTo,
        pos);

    return toAppendTo;
}
 

/**
 * Format the absolute value of the imaginary part.
 *
 * @param absIm Absolute value of the imaginary part of a complex number.
 * @param toAppendTo where the text is to be appended.
 * @param pos On input: an alignment field, if desired. On output: the
 * offsets of the alignment field.
 * @return the value passed in as toAppendTo.
 */
private StringBuffer formatImaginary(double absIm,
                                     StringBuffer toAppendTo,
                                     FieldPosition pos) {
    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    CompositeFormat.formatDouble(absIm, getImaginaryFormat(), toAppendTo, pos);
    if (toAppendTo.toString().equals("1")) {
        // Remove the character "1" if it is the only one.
        toAppendTo.setLength(0);
    }

    return toAppendTo;
}
 

/**
 * <p>Formats a <code>Date</code>, <code>Calendar</code> or
 * <code>Long</code> (milliseconds) object.</p>
 * 
 * @param obj  the object to format
 * @param toAppendTo  the buffer to append to
 * @param pos  the position - ignored
 * @return the buffer passed in
 */
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
    if (obj instanceof Date) {
        return format((Date) obj, toAppendTo);
    } else if (obj instanceof Calendar) {
        return format((Calendar) obj, toAppendTo);
    } else if (obj instanceof Long) {
        return format(((Long) obj).longValue(), toAppendTo);
    } else {
        throw new IllegalArgumentException("Unknown class: " +
            (obj == null ? "<null>" : obj.getClass().getName()));
    }
}
 

@Override
public StringBuffer format(Object o, StringBuffer b, FieldPosition p) {
    if (ValuesChecker.isNAValue(o)) return b.append(VALUE_NA);
    
    return o instanceof Number ? b.append(NUMBER_FORMAT.format(((Number)o).longValue())).append(dataSuffix) :
           o == null ? b : b.append("<unknown>");
}
 

public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
    if (emulateCSV) {
        return toAppendTo.append(result.text);
    } else {
        return toAppendTo.append(result.text.trim());
    }
}
 

/**
 * Able to format Collection<? extends Measure>, Measure[], and Measure
 * by delegating to formatMeasures.
 * If the pos argument identifies a NumberFormat field,
 * then its indices are set to the beginning and end of the first such field
 * encountered. MeasureFormat itself does not supply any fields.
 * 
 * Calling a
 * <code>formatMeasures</code> method is preferred over calling
 * this method as they give better performance.
 * 
 * @param obj must be a Collection&lt;? extends Measure&gt;, Measure[], or Measure object.
 * @param toAppendTo Formatted string appended here.
 * @param pos Identifies a field in the formatted text.
 * @see java.text.Format#format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)
 * 
 * @stable ICU53
 */
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
    int prevLength = toAppendTo.length();
    FieldPosition fpos =
            new FieldPosition(pos.getFieldAttribute(), pos.getField());
    if (obj instanceof Collection) {
        Collection<?> coll = (Collection<?>) obj;
        Measure[] measures = new Measure[coll.size()];
        int idx = 0;
        for (Object o : coll) {
            if (!(o instanceof Measure)) {
                throw new IllegalArgumentException(obj.toString());
            }
            measures[idx++] = (Measure) o;
        }
        toAppendTo.append(formatMeasures(new StringBuilder(), fpos, measures));
    } else if (obj instanceof Measure[]) {
        toAppendTo.append(formatMeasures(new StringBuilder(), fpos, (Measure[]) obj));
    } else if (obj instanceof Measure){
        toAppendTo.append(formatMeasure((Measure) obj, numberFormat, new StringBuilder(), fpos));
    } else {
        throw new IllegalArgumentException(obj.toString());            
    }
    if (fpos.getBeginIndex() != 0 || fpos.getEndIndex() != 0) {
        pos.setBeginIndex(fpos.getBeginIndex() + prevLength);
        pos.setEndIndex(fpos.getEndIndex() + prevLength);
    }
    return toAppendTo;
}
 

/**
 * Formats a {@link BigFraction} object to produce a string.  The BigFraction is
 * output in improper format.
 *
 * @param BigFraction the object to format.
 * @param toAppendTo where the text is to be appended
 * @param pos On input: an alignment field, if desired. On output: the
 *            offsets of the alignment field
 * @return the value passed in as toAppendTo.
 */
public StringBuffer format(final BigFraction BigFraction,
                           final StringBuffer toAppendTo, final FieldPosition pos) {

    pos.setBeginIndex(0);
    pos.setEndIndex(0);

    getNumeratorFormat().format(BigFraction.getNumerator(), toAppendTo, pos);
    toAppendTo.append(" / ");
    getDenominatorFormat().format(BigFraction.getDenominator(), toAppendTo, pos);

    return toAppendTo;
}
 

public String getTimeAsString(Date t){
	if (!enableLocalized){
		return t.toString();
	}
	return formatTime.format(t,	new StringBuffer(),
								  new java.text.FieldPosition(0)).toString();
}
 

@Override
public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition)
{
	final String value = ISO8601Utils.format(date, true);
	toAppendTo.append(value);
	return toAppendTo;
}