The setExtension() method of java.util.Locale.Builder class in Java is used to set this Locale.Builder to the specified extension key. It means that this method will set the current extension of Locale.Builder instance to match the provided extension key and value and return it. If the specified extension is null or empty, then the extension of this LocaleBuilder is removed. The specified extension is checked against the LDML BCP 47 compatible extension.
public Locale.Builder setExtension( char extensionKey, String extensionValue)
Parameter: This method accepts two parameters:
- extensionKey: It is the character value that is to be set to this Locale>Builder instance.
- extensionValue: It is the String value that is to be set to this Locale>Builder instance.
Return Value: This method returns an Locale.Builder instance with the extension set of this Locale.Builder to the specified extension.
Exception: This method throws following Exceptions:
- IllformedLocaleException: if the specified extension has any ill formed fields
LocaleBuilder: java.util.Locale$Builder@232204a1 Setting the extension: u/ca-japanese Updated LocaleBuilder: java.util.Locale$Builder@232204a1
LocaleBuilder: java.util.Locale$Builder@232204a1 Setting the extension: @/fsdf# java.util.IllformedLocaleException: Ill-formed extension key: @ [at index 0]
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