7/6/2023 0 Comments String formatter java exampleThat support fields should override this and create anĪttributedCharacterIterator with meaningful attributes. To define what the legal values are for each attribute in theĪttributedCharacterIterator, but typically the attributeĪttributedCharacterIterator with no attributes. To build the resulting String, as well as to determine informationĮach attribute key of the AttributedCharacterIterator will be of typeįield. You can use the returned AttributedCharacterIterator Public AttributedCharacterIterator formatToCharacterIterator( Object obj) Formats an Object producing an AttributedCharacterIterator. IllegalArgumentException - if the Format cannot format the given Throws: NullPointerException - if toAppendTo or Returns: the string buffer passed in as toAppendTo, Parameters: obj - The object to format toAppendTo - where the text is to be appended pos - A FieldPosition identifying a field Then its indices are set to the beginning and end of the first such If the pos argument identifies a field used by the format, Public abstract StringBuffer format( Object obj,įieldPosition pos) Formats an object and appends the resulting text to a given string Throws: IllegalArgumentException - if the Format cannot format the given New StringBuffer(), new FieldPosition(0)).toString() Public final String format( Object obj) Formats an object to produce a string. (For invocation by subclass constructors, typically ObjectĮquals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Parses text from a string to produce an object. Parses text from the beginning of the given string to produce an object. If multiple threads access a format concurrently, it must be synchronizedĭefines constants that are used as attribute keys in theįrom Format.formatToCharacterIterator and asĬreates and returns a copy of this object.įormats an object and appends the resulting text to a given stringįormats an Object producing an AttributedCharacterIterator. It is recommended to create separate format instances for each thread. For examples of these constants, see ERA_FIELD and its Object which identifies what information is contained in the field and its These constants are used to create a FieldPosition Public static Locale getAvailableLocales()Īnd finally subclasses may define a set of constants to identify the variousįields in the formatted output. Must also implement the following class method: Subclasses of Format that allow programmers to create objectsįor locales (with getInstance(Locale) for example) Methods for getting specialized number formatters. GetPercentInstance and getCurrencyInstance GetXxxxInstance methods for more specialized control. In addition, some subclasses may also implement other Object appropriate for the specified locale getInstance(Locale) for getting a useful format.getInstance for getting a useful format object appropriate.Most subclasses will also implement the following factory methods: When no text in the required format is at the beginning of the input text. ParsePosition argument should throw ParseException Specific input types as well as parse methods for specific Subclasses often also provide additional format methods for These general methods allow polymorphic parsing and formatting of objectsĪnd are used, for example, by MessageFormat. parseObject(String source, ParsePosition pos).format(Object obj, StringBuffer toAppendTo, FieldPosition pos).NumberFormat-for formatting dates, messages, and numbers,Ĭoncrete subclasses must implement three methods: The Java Platform provides three specialized subclasses of Format. Not tell which digits belong to which number. No separator in between, and in this case the parseObject could For example, aįormat method might create two adjacent integer numbers with However, there mayīe exceptional cases where this is not possible. Generally, a format's parseObject method must be able to parseĪny string formatted by its format method. Locale-sensitive objects into Strings (theįormat method) and for parsing Strings back Information such as dates, messages, and numbers.įormat defines the programming interface for formatting Public abstract class Format extends Object implements Serializable, Cloneableįormat is an abstract base class for formatting locale-sensitive SUMMARY: NESTED | FIELD | CONSTR | METHODĬlass Format All Implemented Interfaces: Serializable, Cloneable Direct Known Subclasses: DateFormat, MessageFormat, NumberFormat
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