Cardinalities
-
CARDINALITY_ZERO
Matches
n = 0Example Integers:
0Example Decimals:
0.0, 0.00, 0.000, 0.0000 -
CARDINALITY_ONE
Matches
n = 1Example Integers:
1Example Decimals:
1.0, 1.00, 1.000, 1.0000 -
CARDINALITY_TWO
Matches
n = 2Example Integers:
2Example Decimals:
2.0, 2.00, 2.000, 2.0000 -
CARDINALITY_FEW
Matches
n % 100 = 3..10Example Integers:
3, 10, 103, 110, 1003, …Example Decimals:
3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 103.0, 1003.0, … -
CARDINALITY_MANY
Matches
n % 100 = 11..99Example Integers:
11, 26, 111, 1011, …Example Decimals:
11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 111.0, 1011.0, … -
CARDINALITY_OTHER
Matches
all other valuesExample Integers:
100, 102, 200, 202, 300, 302, 400, 402, 500, 502, 600, 1000, 10000, 100000, 1000000, …Example Decimals:
0.1, 0.9, 1.1, 1.7, 10.1, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …
Cardinality example
This localized strings file selects the localized form of “day” for a delivery estimate. Raw numbers choose the CLDR category; values formatted with the JDK NumberFormat are interpolated for display.
Sample localized strings file
{ "Delivery.LeadTime": { "commentary": "Estimated delivery time, expressed in days.", "translation": "{{leadTime}}", "placeholders": { "leadTime": { "value": "dayCount", "translations": { "CARDINALITY_ZERO": "{{formattedDayCount}} يوم", "CARDINALITY_ONE": "يوم", "CARDINALITY_TWO": "يومان", "CARDINALITY_FEW": "{{formattedDayCount}} أيام", "CARDINALITY_MANY": "{{formattedDayCount}} يومًا", "CARDINALITY_OTHER": "{{formattedDayCount}} يوم" } } } } }
Usage and expected results
The Java code passes each raw number for cardinality selection and formats its display value separately with NumberFormat. For this right-to-left locale, Lokalized's default BidiIsolation.RTL_LOCALES wraps caller-supplied formatted values with U+2068 FIRST STRONG ISOLATE and U+2069 POP DIRECTIONAL ISOLATE; the expected expressions below show those escapes.
Locale locale = Locale.forLanguageTag("ars"); Strings strings = Strings.withFallbackLocale(locale) .localizedStringSupplier(() -> LocalizedStringLoader.loadFromFilesystem(Paths.get("strings"))) .localeSupplier((matcher) -> matcher.bestMatchFor(locale)) .build(); NumberFormat numberFormat = NumberFormat.getNumberInstance(locale); // Raw numbers select language forms; NumberFormat produces the display values // CARDINALITY_ZERO Number zeroDayCount = 0; String zeroFormattedDayCount = numberFormat.format(zeroDayCount); assertEquals(Cardinality.ZERO, Cardinality.forNumber(zeroDayCount, locale)); // Expected: <FSI>٠<PDI> يوم // U+2068 FIRST STRONG ISOLATE begins bidirectional isolation around a caller-supplied value in right-to-left text // U+2069 POP DIRECTIONAL ISOLATE ends bidirectional isolation around a caller-supplied value in right-to-left text assertEquals("\u2068" + zeroFormattedDayCount + "\u2069 يوم", strings.get( "Delivery.LeadTime", Map.of("dayCount", zeroDayCount, "formattedDayCount", zeroFormattedDayCount) )); // CARDINALITY_ONE Number oneDayCount = 1; String oneFormattedDayCount = numberFormat.format(oneDayCount); assertEquals(Cardinality.ONE, Cardinality.forNumber(oneDayCount, locale)); assertEquals("يوم", strings.get( "Delivery.LeadTime", Map.of("dayCount", oneDayCount, "formattedDayCount", oneFormattedDayCount) )); // CARDINALITY_TWO Number twoDayCount = 2; String twoFormattedDayCount = numberFormat.format(twoDayCount); assertEquals(Cardinality.TWO, Cardinality.forNumber(twoDayCount, locale)); assertEquals("يومان", strings.get( "Delivery.LeadTime", Map.of("dayCount", twoDayCount, "formattedDayCount", twoFormattedDayCount) )); // CARDINALITY_FEW Number fewDayCount = 3; String fewFormattedDayCount = numberFormat.format(fewDayCount); assertEquals(Cardinality.FEW, Cardinality.forNumber(fewDayCount, locale)); // Expected: <FSI>٣<PDI> أيام assertEquals("\u2068" + fewFormattedDayCount + "\u2069 أيام", strings.get( "Delivery.LeadTime", Map.of("dayCount", fewDayCount, "formattedDayCount", fewFormattedDayCount) )); // CARDINALITY_MANY Number manyDayCount = 11; String manyFormattedDayCount = numberFormat.format(manyDayCount); assertEquals(Cardinality.MANY, Cardinality.forNumber(manyDayCount, locale)); // Expected: <FSI>١١<PDI> يومًا assertEquals("\u2068" + manyFormattedDayCount + "\u2069 يومًا", strings.get( "Delivery.LeadTime", Map.of("dayCount", manyDayCount, "formattedDayCount", manyFormattedDayCount) )); // CARDINALITY_OTHER Number otherDayCount = 100; String otherFormattedDayCount = numberFormat.format(otherDayCount); assertEquals(Cardinality.OTHER, Cardinality.forNumber(otherDayCount, locale)); // Expected: <FSI>١٠٠<PDI> يوم assertEquals("\u2068" + otherFormattedDayCount + "\u2069 يوم", strings.get( "Delivery.LeadTime", Map.of("dayCount", otherDayCount, "formattedDayCount", otherFormattedDayCount) ));
Cardinality Ranges
No explicit CLDR cardinality-range mapping is defined for this language. Cardinality.forRange(...) therefore falls back to the ending cardinality for every range.
Cardinality range example
Because CLDR defines no explicit range mapping for this locale, the ending cardinality selects the result. The selected form wraps a separately formatted display range.
Sample localized strings file
{ "Delivery.Window": { "commentary": "Estimated delivery window, expressed as a range of days.", "translation": "{{window}}", "placeholders": { "window": { "range": { "start": "minDays", "end": "maxDays" }, "translations": { "CARDINALITY_ZERO": "{{formattedDayRange}} يوم", "CARDINALITY_ONE": "{{formattedDayRange}} يوم", "CARDINALITY_TWO": "{{formattedDayRange}} يومان", "CARDINALITY_FEW": "{{formattedDayRange}} أيام", "CARDINALITY_MANY": "{{formattedDayRange}} يومًا", "CARDINALITY_OTHER": "{{formattedDayRange}} يوم" } } } } }
Usage and expected results
The Java code passes raw range endpoints for selection. Because NumberFormat formats one number at a time, it formats both endpoints separately and joins them for display; choose range punctuation appropriate to your application. For this right-to-left locale, Lokalized's default BidiIsolation.RTL_LOCALES wraps caller-supplied formatted values with U+2068 FIRST STRONG ISOLATE and U+2069 POP DIRECTIONAL ISOLATE; the expected expressions below show those escapes.
Locale locale = Locale.forLanguageTag("ars"); Strings strings = Strings.withFallbackLocale(locale) .localizedStringSupplier(() -> LocalizedStringLoader.loadFromFilesystem(Paths.get("strings"))) .localeSupplier((matcher) -> matcher.bestMatchFor(locale)) .build(); NumberFormat numberFormat = NumberFormat.getNumberInstance(locale); // Raw numbers select language forms; NumberFormat produces the display values // CARDINALITY_OTHER range (ending-cardinality fallback) Number minDays = 0; String formattedMinDays = numberFormat.format(minDays); Number maxDays = new java.math.BigDecimal("0.1"); NumberFormat maxDaysFormat = NumberFormat.getNumberInstance(locale); maxDaysFormat.setMinimumFractionDigits(1); maxDaysFormat.setMaximumFractionDigits(1); String formattedMaxDays = maxDaysFormat.format(maxDays); String formattedDayRange = formattedMinDays + "-" + formattedMaxDays; assertEquals(Cardinality.OTHER, Cardinality.forRange( Cardinality.forNumber(minDays, locale), Cardinality.forNumber(maxDays, locale), locale )); // Expected: <FSI>٠-٠٫١<PDI> يوم // U+2068 FIRST STRONG ISOLATE begins bidirectional isolation around a caller-supplied value in right-to-left text // U+2069 POP DIRECTIONAL ISOLATE ends bidirectional isolation around a caller-supplied value in right-to-left text assertEquals("\u2068" + formattedDayRange + "\u2069 يوم", strings.get( "Delivery.Window", Map.of("minDays", minDays, "maxDays", maxDays, "formattedDayRange", formattedDayRange) ));
Ordinalities
All ordinal numbers use ORDINALITY_OTHER; no value selects a different form.
Addendum: Language Form Rules
The language form expressions above are specified by Unicode Technical Standard #35 and use the following notation:
nabsolute value of the source number (integer and decimals)iinteger digits ofnvnumber of visible fraction digits inn, with trailing zeroswnumber of visible fraction digits inn, without trailing zerosfvisible fractional digits inn, with trailing zerostvisible fractional digits inn, without trailing zerosc/ecompact decimal exponent operands used by some CLDR compact-number rules