French Collation
The enableFrenchCollation() method determines the order in which secondary weights are compared. Normally, weights at all levels are compared from the start of the input strings to their ends. When French collation is enabled, secondary weights are compared in reverse order, from the end of the input strings to their beginnings, as is customary in French. French collation is enabled by default for French locales.
The isEnabledFrenchCollation() method returns true if the French collation is enabled; otherwise, false.