# android.icu.util Added in[API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) # android.icu.util *** ** * ** *** [Kotlin](https://developer.android.com/reference/kotlin/android/icu/util/package-summary "View this page in Kotlin")\|Java ## Interfaces |---------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Freezable](https://developer.android.com/reference/android/icu/util/Freezable)\ | Provides a flexible mechanism for controlling access, without requiring that a class be immutable. | | [RangeValueIterator](https://developer.android.com/reference/android/icu/util/RangeValueIterator) | Interface for enabling iteration over sets of \, where index is the sorted integer index in ascending order and value, its associated integer value. | | [ValueIterator](https://developer.android.com/reference/android/icu/util/ValueIterator) | Interface for enabling iteration over sets of \, where int is the sorted integer index in ascending order, and Object its associated value. | ## Classes |-----------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [BuddhistCalendar](https://developer.android.com/reference/android/icu/util/BuddhistCalendar) | `BuddhistCalendar`is a subclass of`GregorianCalendar`that numbers years since the birth of the Buddha. | | [Calendar](https://developer.android.com/reference/android/icu/util/Calendar) | **\[icu enhancement\]** ICU's replacement for[Calendar](https://developer.android.com/reference/java/util/Calendar). Methods, fields, and other functionality specific to ICU are labeled '**\[icu\]**'. | | [Calendar.WeekData](https://developer.android.com/reference/android/icu/util/Calendar.WeekData) | Simple, immutable struct-like class for access to the CLDR week data. | | [ChineseCalendar](https://developer.android.com/reference/android/icu/util/ChineseCalendar) | `ChineseCalendar`is a concrete subclass of[Calendar](https://developer.android.com/reference/android/icu/util/Calendar)that implements a traditional Chinese calendar. | | [CopticCalendar](https://developer.android.com/reference/android/icu/util/CopticCalendar) | Implement the Coptic calendar system. | | [Currency](https://developer.android.com/reference/android/icu/util/Currency) | A class encapsulating a currency, as defined by ISO 4217. | | [CurrencyAmount](https://developer.android.com/reference/android/icu/util/CurrencyAmount) | An amount of currency, consisting of a Number and a Currency. | | [DateInterval](https://developer.android.com/reference/android/icu/util/DateInterval) | This class represents date interval. | | [EthiopicCalendar](https://developer.android.com/reference/android/icu/util/EthiopicCalendar) | Implement the Ethiopic calendar system. | | [GregorianCalendar](https://developer.android.com/reference/android/icu/util/GregorianCalendar) | **\[icu enhancement\]** ICU's replacement for[GregorianCalendar](https://developer.android.com/reference/java/util/GregorianCalendar). Methods, fields, and other functionality specific to ICU are labeled '**\[icu\]**'. | | [HebrewCalendar](https://developer.android.com/reference/android/icu/util/HebrewCalendar) | `HebrewCalendar`is a subclass of`Calendar`that that implements the traditional Hebrew calendar. | | [IndianCalendar](https://developer.android.com/reference/android/icu/util/IndianCalendar) | `IndianCalendar`is a subclass of`GregorianCalendar`that numbers years since the birth of the Buddha. | | [IslamicCalendar](https://developer.android.com/reference/android/icu/util/IslamicCalendar) | `IslamicCalendar`is a subclass of`Calendar`that that implements the Islamic civil and religious calendars. | | [JapaneseCalendar](https://developer.android.com/reference/android/icu/util/JapaneseCalendar) | `JapaneseCalendar`is a subclass of`GregorianCalendar`that numbers years and eras based on the reigns of the Japanese emperors. | | [LocaleData](https://developer.android.com/reference/android/icu/util/LocaleData) | A class for accessing miscellaneous data in the locale bundles | | [LocaleData.MeasurementSystem](https://developer.android.com/reference/android/icu/util/LocaleData.MeasurementSystem) | Enumeration for representing the measurement systems. | | [LocaleData.PaperSize](https://developer.android.com/reference/android/icu/util/LocaleData.PaperSize) | A class that represents the size of letter head used in the country | | [Measure](https://developer.android.com/reference/android/icu/util/Measure) | An amount of a specified unit, consisting of a Number and a Unit. | | [MeasureUnit](https://developer.android.com/reference/android/icu/util/MeasureUnit) | A unit such as length, mass, volume, currency, etc. | | [Output](https://developer.android.com/reference/android/icu/util/Output)\ | Simple struct-like class for output parameters. | | [RangeValueIterator.Element](https://developer.android.com/reference/android/icu/util/RangeValueIterator.Element) | Return result wrapper for android.icu.util.RangeValueIterator. | | [TaiwanCalendar](https://developer.android.com/reference/android/icu/util/TaiwanCalendar) | `TaiwanCalendar`is a subclass of`GregorianCalendar`that numbers years since 1912. | | [TimeUnit](https://developer.android.com/reference/android/icu/util/TimeUnit) | Measurement unit for time units. | | [TimeZone](https://developer.android.com/reference/android/icu/util/TimeZone) | **\[icu enhancement\]** ICU's replacement for[TimeZone](https://developer.android.com/reference/java/util/TimeZone). Methods, fields, and other functionality specific to ICU are labeled '**\[icu\]**'. | | [ULocale](https://developer.android.com/reference/android/icu/util/ULocale) | **\[icu enhancement\]** ICU's replacement for[Locale](https://developer.android.com/reference/java/util/Locale). Methods, fields, and other functionality specific to ICU are labeled '**\[icu\]**'. | | [ULocale.Builder](https://developer.android.com/reference/android/icu/util/ULocale.Builder) | `Builder`is used to build instances of`ULocale`from values configured by the setters. | | [UniversalTimeScale](https://developer.android.com/reference/android/icu/util/UniversalTimeScale) | There are quite a few different conventions for binary datetime, depending on different platforms and protocols. | | [ValueIterator.Element](https://developer.android.com/reference/android/icu/util/ValueIterator.Element) | The return result container of each iteration. | | [VersionInfo](https://developer.android.com/reference/android/icu/util/VersionInfo) | Class to store version numbers of the form major.minor.milli.micro. | ## Enums |-----------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Currency.CurrencyUsage](https://developer.android.com/reference/android/icu/util/Currency.CurrencyUsage) | Currency Usage used for Decimal Format | | [IslamicCalendar.CalculationType](https://developer.android.com/reference/android/icu/util/IslamicCalendar.CalculationType) | enumeration of available calendar calculation types | | [MeasureUnit.Complexity](https://developer.android.com/reference/android/icu/util/MeasureUnit.Complexity) | Enumeration for unit complexity. | | [MeasureUnit.MeasurePrefix](https://developer.android.com/reference/android/icu/util/MeasureUnit.MeasurePrefix) | Enumeration for SI and binary prefixes, e.g. "kilo-", "nano-", "mebi-". | | [TimeZone.SystemTimeZoneType](https://developer.android.com/reference/android/icu/util/TimeZone.SystemTimeZoneType) | **\[icu\]** System time zone type constants used by filtering zones in[TimeZone.getAvailableIDs(SystemTimeZoneType, String, Integer)](https://developer.android.com/reference/android/icu/util/TimeZone#getAvailableIDs(android.icu.util.TimeZone.SystemTimeZoneType,%20java.lang.String,%20java.lang.Integer)) | | [ULocale.AvailableType](https://developer.android.com/reference/android/icu/util/ULocale.AvailableType) | Types for[ULocale.getAvailableLocalesByType](https://developer.android.com/reference/android/icu/util/ULocale#getAvailableLocalesByType(android.icu.util.ULocale.AvailableType)) | | [ULocale.Category](https://developer.android.com/reference/android/icu/util/ULocale.Category) | Enum for locale categories. | ## Exceptions |---------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [ICUUncheckedIOException](https://developer.android.com/reference/android/icu/util/ICUUncheckedIOException) | Unchecked version of[IOException](https://developer.android.com/reference/java/io/IOException). | | [IllformedLocaleException](https://developer.android.com/reference/android/icu/util/IllformedLocaleException) | Thrown by methods in[ULocale](https://developer.android.com/reference/android/icu/util/ULocale)and[ULocale.Builder](https://developer.android.com/reference/android/icu/util/ULocale.Builder)to indicate that an argument is not a well-formed BCP 47 tag. | - ## Interfaces - [Freezable](https://developer.android.com/reference/android/icu/util/Freezable) - [RangeValueIterator](https://developer.android.com/reference/android/icu/util/RangeValueIterator) - [ValueIterator](https://developer.android.com/reference/android/icu/util/ValueIterator) - ## Classes - [BuddhistCalendar](https://developer.android.com/reference/android/icu/util/BuddhistCalendar) - [Calendar](https://developer.android.com/reference/android/icu/util/Calendar) - [Calendar.WeekData](https://developer.android.com/reference/android/icu/util/Calendar.WeekData) - [ChineseCalendar](https://developer.android.com/reference/android/icu/util/ChineseCalendar) - [CopticCalendar](https://developer.android.com/reference/android/icu/util/CopticCalendar) - [Currency](https://developer.android.com/reference/android/icu/util/Currency) - [CurrencyAmount](https://developer.android.com/reference/android/icu/util/CurrencyAmount) - [DateInterval](https://developer.android.com/reference/android/icu/util/DateInterval) - [EthiopicCalendar](https://developer.android.com/reference/android/icu/util/EthiopicCalendar) - [GregorianCalendar](https://developer.android.com/reference/android/icu/util/GregorianCalendar) - [HebrewCalendar](https://developer.android.com/reference/android/icu/util/HebrewCalendar) - [IndianCalendar](https://developer.android.com/reference/android/icu/util/IndianCalendar) - [IslamicCalendar](https://developer.android.com/reference/android/icu/util/IslamicCalendar) - [JapaneseCalendar](https://developer.android.com/reference/android/icu/util/JapaneseCalendar) - [LocaleData](https://developer.android.com/reference/android/icu/util/LocaleData) - [LocaleData.MeasurementSystem](https://developer.android.com/reference/android/icu/util/LocaleData.MeasurementSystem) - [LocaleData.PaperSize](https://developer.android.com/reference/android/icu/util/LocaleData.PaperSize) - [Measure](https://developer.android.com/reference/android/icu/util/Measure) - [MeasureUnit](https://developer.android.com/reference/android/icu/util/MeasureUnit) - [Output](https://developer.android.com/reference/android/icu/util/Output) - [RangeValueIterator.Element](https://developer.android.com/reference/android/icu/util/RangeValueIterator.Element) - [TaiwanCalendar](https://developer.android.com/reference/android/icu/util/TaiwanCalendar) - [TimeUnit](https://developer.android.com/reference/android/icu/util/TimeUnit) - [TimeZone](https://developer.android.com/reference/android/icu/util/TimeZone) - [ULocale](https://developer.android.com/reference/android/icu/util/ULocale) - [ULocale.Builder](https://developer.android.com/reference/android/icu/util/ULocale.Builder) - [UniversalTimeScale](https://developer.android.com/reference/android/icu/util/UniversalTimeScale) - [ValueIterator.Element](https://developer.android.com/reference/android/icu/util/ValueIterator.Element) - [VersionInfo](https://developer.android.com/reference/android/icu/util/VersionInfo) - ## Enums - [Currency.CurrencyUsage](https://developer.android.com/reference/android/icu/util/Currency.CurrencyUsage) - [IslamicCalendar.CalculationType](https://developer.android.com/reference/android/icu/util/IslamicCalendar.CalculationType) - [MeasureUnit.Complexity](https://developer.android.com/reference/android/icu/util/MeasureUnit.Complexity) - [MeasureUnit.MeasurePrefix](https://developer.android.com/reference/android/icu/util/MeasureUnit.MeasurePrefix) - [TimeZone.SystemTimeZoneType](https://developer.android.com/reference/android/icu/util/TimeZone.SystemTimeZoneType) - [ULocale.AvailableType](https://developer.android.com/reference/android/icu/util/ULocale.AvailableType) - [ULocale.Category](https://developer.android.com/reference/android/icu/util/ULocale.Category) - ## Exceptions - [ICUUncheckedIOException](https://developer.android.com/reference/android/icu/util/ICUUncheckedIOException) - [IllformedLocaleException](https://developer.android.com/reference/android/icu/util/IllformedLocaleException)