The primary use of comparators is to pass them to something that does sorting, either one of the explicit sort methods, or to a data structure than implicitly sorts.
Tutorial Details:
java.util.Comparator interface
The java.util.Comparator interface can be used to create objects to pass to sort methods or sorting data structures. A Comparator must define a compare function which takes two Objects and returns a -1, 0, or 1
Comparators not needed if there's a natural sorting order
Comparators are not needed for arrays of primitive values, or arrays of collections of objects that have a natural ordering, eg, String, BigInteger, etc.
Rate Tutorial: http://www.roseindia.net/java/java-tips/data/collections_non_generic/comparators.shtml
Read
Tutorial at: Click here to view the tutorial
Rate Tutorial: Comparators
View Tutorial: Comparators
Related
Tutorials:
|
