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JavaTM 2 Platform Standard Edition |
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See:
Description
| Interface Summary | |
| AttributedCharacterIterator | An AttributedCharacterIterator allows iteration through both text and related attribute information. |
| CharacterIterator | This interface defines a protocol for bidirectional iteration over text. |
| Class Summary | |
| 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. |
| BreakIterator | The BreakIterator class implements methods for finding
the location of boundaries in text. |
| ChoiceFormat | A ChoiceFormat allows you to attach a format to a range of numbers. |
| CollationElementIterator | The CollationElementIterator class is used as an iterator
to walk through each character of an international string. |
| CollationKey | A CollationKey represents a String under the
rules of a specific Collator object. |
| Collator | The Collator class performs locale-sensitive
String comparison. |
| DateFormat | DateFormat is an abstract class for date/time formatting subclasses which formats and parses dates or time in a language-independent manner. |
| DateFormatSymbols | DateFormatSymbols is 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 | DecimalFormat is a concrete subclass of NumberFormat
for formatting decimal numbers. |
| DecimalFormatSymbols | This class represents the set of symbols (such as the decimal separator,
the grouping separator, and so on) needed by DecimalFormat
to format numbers. |
| FieldPosition | FieldPosition is a simple class used by Format
and its subclasses to identify fields in formatted output. |
| Format | Format is an abstract base class for formatting locale-sensitive
information such as dates, messages, and numbers. |
| MessageFormat | MessageFormat provides a means to produce concatenated
messages in language-neutral way. |
| NumberFormat | NumberFormat is the abstract base class for all number
formats. |
| ParsePosition | ParsePosition is a simple class used by Format
and its subclasses to keep track of the current position during parsing. |
| RuleBasedCollator | The RuleBasedCollator class is a concrete subclass of
Collator that provides a simple, data-driven, table
collator. |
| SimpleDateFormat | SimpleDateFormat is a concrete class for formatting and
parsing dates in a locale-sensitive manner. |
| StringCharacterIterator | StringCharacterIterator implements the
CharacterIterater protocol for a String. |
| Exception Summary | |
| ParseException | Signals that an error has been reached unexpectedly while parsing. |
Provides classes and interfaces for handling text, dates, numbers, currency, messages and collation in a manner independent of natural languages. This means your main application or applet can be written to be language-independent, and it can rely upon separate, dynamically-linked localized resources. This allows the flexibility of adding localizations for new localizations at any time.
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:
Dates and numbers are represented internally in a locale-independent way. For example, dates are kept as milliseconds since January 1, 1970, 00:00:00 UCT. When these objects are printed or displayed, they must be converted to localized strings. The locale-specific parts of a date string, such as the time zone string, are separately imported from a locale-specific resource bundle.
The format() method converts the Date
object from -604656780000 milliseconds to the form "Tuesday, November
3, 1997 9:47am CST" for the U. S. English locale. The figure shows how the
format() method of subclasses of Format
enable instances of Number, Date,
String, and other objects to be formatted to
locale-specific strings.
Conversely, the parseObject() method (and
parse() method in subclasses) perform the reverse
operation of parsing localized strings and converting them to
Number, Date, and
String objects. The figure
shows how the parse() method is complementary to
format(). Any String formatted by
format() is guaranteed to be parseable by
parseObject().
Java provides six subclasses of Format for formatting
dates, numbers, and messages: DateFormat,
SimpleDateFormat, NumberFormat,
DecimalFormat, ChoiceFormat, and
MessageFormat.
Collator class and its subclass
RuleBasedCollator perform locale-sensitive string
comparison. You use these classes to build searching and alphabetical
sorting routines for natural language text. They can distinguish
characters based on the base character, accent marks, and
uppercase/lowercase properties.
Collator is an abstract base class. Subclasses
implement specific collation strategies. One subclass,
RuleBasedCollator, is currently provided and is
applicable to a wide set of languages. Other subclasses may be created
to handle more specialized
needs. CollationElementIterator provides an iterator for
stepping through each character of a locale-specific string according
to the rules of a specific Collator
object. CollationKey enables fast sorting of strings by
representing a string as a sort key under the rules of a specific
Collator object.
char and Character
represent Unicode characters, sometimes Unicode characters combine to
form a more complex character that has its own semantic value, a
user character. The BreakIterator class makes it
possible to iterate over these user characters. A break iterator can
find the location of character, word, or sentence boundaries or
potential line-break boundaries. This makes it possible for a program
to properly select characters for text operations such as highlighting
a character, cutting a word, moving to the next sentence, or
word-wrapping at a line ending. These operations are performed in a
locale-sensitive manner, meaning that they honor the boundaries of
text for a particular locale.
|
Locale-Sensitive Classes NumberFormat DecimalFormat DecimalFormatSymbols MessageFormat DateFormat SimpleDateFormat DateFormatSymbols Collator RuleBasedCollator CollationElementIterator CollationKey BreakIterator |
Locale-Independent Classes Format ChoiceFormat FieldPosition ParsePosition ParseException StringCharacterIterator CharacterIterator |
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JavaTM 2 Platform Standard Edition |
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