Get the decomposition mode of this Collator. Decomposition mode determines how Unicode composed characters are handled. Adjusting decomposition mode allows the user to select between faster and more complete collation behavior.
The three values for decomposition mode are:
java.text.Collator.setDecomposition, java.text.Collator.NO_DECOMPOSITION, java.text.Collator.CANONICAL_DECOMPOSITION, java.text.Collator.FULL_DECOMPOSITION
Diagram: Collator