Module java.base
Package java.util

Enum Class Locale.FilteringMode

java.lang.Object
java.lang.Enum<Locale.FilteringMode>
java.util.Locale.FilteringMode
All Implemented Interfaces:
Serializable, Comparable<Locale.FilteringMode>, Constable
Enclosing class:
Locale

public static enum Locale.FilteringMode extends Enum<Locale.FilteringMode>
This enum provides constants to select a filtering mode for locale matching. Refer to RFC 4647 Matching of Language Tags for details.

As an example, think of two Language Priority Lists each of which includes only one language range and a set of following language tags:

    de (German)
    de-DE (German, Germany)
    de-Deva (German, in Devanagari script)
    de-Deva-DE (German, in Devanagari script, Germany)
    de-DE-1996 (German, Germany, orthography of 1996)
    de-Latn-DE (German, in Latin script, Germany)
    de-Latn-DE-1996 (German, in Latin script, Germany, orthography of 1996)
 
The filtering method will behave as follows:
Filtering method behavior
Filtering Mode Language Priority List: "de-DE" Language Priority List: "de-*-DE"
AUTOSELECT_FILTERING Performs basic filtering and returns "de-DE" and "de-DE-1996". Performs extended filtering and returns "de-DE", "de-Deva-DE", "de-DE-1996", "de-Latn-DE", and "de-Latn-DE-1996".
EXTENDED_FILTERING Performs extended filtering and returns "de-DE", "de-Deva-DE", "de-DE-1996", "de-Latn-DE", and "de-Latn-DE-1996". Same as above.
IGNORE_EXTENDED_RANGES Performs basic filtering and returns "de-DE" and "de-DE-1996". Performs basic filtering and returns null because nothing matches.
MAP_EXTENDED_RANGES Same as above. Performs basic filtering and returns "de-DE" and "de-DE-1996" because "de-*-DE" is mapped to "de-DE".
REJECT_EXTENDED_RANGES Same as above. Throws IllegalArgumentException because "de-*-DE" is not a valid basic language range.
Since:
1.8
External Specifications
See Also: