See: Description
| Interface | Description | 
|---|---|
| AttributedCharacterIterator | An  AttributedCharacterIteratorallows iteration through both text and
 related attribute information. | 
| CharacterIterator | This interface defines a protocol for bidirectional iteration over text. | 
| Class | Description | 
|---|---|
| Annotation | An Annotation object is used as a wrapper for a text attribute value if
 the attribute has annotation characteristics. | 
| AttributedCharacterIterator.Attribute | Defines attribute keys that are used to identify text attributes. | 
| AttributedString | An AttributedString holds text and related attribute information. | 
| Bidi | This class implements the Unicode Bidirectional Algorithm. | 
| BreakIterator | The  BreakIteratorclass implements methods for finding
 the location of boundaries in text. | 
| ChoiceFormat | A  ChoiceFormatallows you to attach a format to a range of numbers. | 
| CollationElementIterator | The  CollationElementIteratorclass is used as an iterator
 to walk through each character of an international string. | 
| CollationKey | A  CollationKeyrepresents aStringunder the
 rules of a specificCollatorobject. | 
| Collator | The  Collatorclass performs locale-sensitiveStringcomparison. | 
| DateFormat | DateFormatis an abstract class for date/time formatting subclasses which
 formats and parses dates or time in a language-independent manner. | 
| DateFormat.Field | Defines constants that are used as attribute keys in the
  AttributedCharacterIteratorreturned
 fromDateFormat.formatToCharacterIteratorand as
 field identifiers inFieldPosition. | 
| DateFormatSymbols | DateFormatSymbolsis a public class for encapsulating
 localizable date-time formatting data, such as the names of the
 months, the names of the days of the week, and the time zone data. | 
| DecimalFormat | DecimalFormatis a concrete subclass ofNumberFormatthat formats decimal numbers. | 
| DecimalFormatSymbols | This class represents the set of symbols (such as the decimal separator,
 the grouping separator, and so on) needed by  DecimalFormatto format numbers. | 
| FieldPosition | FieldPositionis a simple class used byFormatand its subclasses to identify fields in formatted output. | 
| Format | Formatis an abstract base class for formatting locale-sensitive
 information such as dates, messages, and numbers. | 
| Format.Field | Defines constants that are used as attribute keys in the
  AttributedCharacterIteratorreturned
 fromFormat.formatToCharacterIteratorand as
 field identifiers inFieldPosition. | 
| MessageFormat | MessageFormatprovides a means to produce concatenated
 messages in a language-neutral way. | 
| MessageFormat.Field | Defines constants that are used as attribute keys in the
  AttributedCharacterIteratorreturned
 fromMessageFormat.formatToCharacterIterator. | 
| Normalizer | This class provides the method  normalizewhich transforms Unicode
 text into an equivalent composed or decomposed form, allowing for easier
 sorting and searching of text. | 
| NumberFormat | NumberFormatis the abstract base class for all number
 formats. | 
| NumberFormat.Field | Defines constants that are used as attribute keys in the
  AttributedCharacterIteratorreturned
 fromNumberFormat.formatToCharacterIteratorand as
 field identifiers inFieldPosition. | 
| ParsePosition | ParsePositionis a simple class used byFormatand its subclasses to keep track of the current position during parsing. | 
| RuleBasedCollator | The  RuleBasedCollatorclass is a concrete subclass ofCollatorthat provides a simple, data-driven, table
 collator. | 
| SimpleDateFormat | SimpleDateFormatis a concrete class for formatting and
 parsing dates in a locale-sensitive manner. | 
| StringCharacterIterator | StringCharacterIteratorimplements theCharacterIteratorprotocol for aString. | 
| Enum | Description | 
|---|---|
| Normalizer.Form | This enum provides constants of the four Unicode normalization forms
 that are described in
 
 Unicode Standard Annex #15 — Unicode Normalization Forms
 and two methods to access them. | 
| Exception | Description | 
|---|---|
| ParseException | Signals that an error has been reached unexpectedly
 while parsing. | 
These classes are capable of formatting dates, numbers, and messages, parsing; searching and sorting strings; and iterating over characters, words, sentences, and line breaks. This package contains three main groups of classes and interfaces:
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