Returns this Collator's strength property. The strength property determines the minimum level of difference considered significant during comparison. See the Collator class description for an example of use.

Returns:  this Collator's current strength property.

See also:
java.text.Collator.setStrength, java.text.Collator.PRIMARY, java.text.Collator.SECONDARY, java.text.Collator.TERTIARY, java.text.Collator.IDENTICAL