Java for Testers - Part 231 - TreeSet

In this video, I have explained and practically demonstrated the below things on TreeSet Class of Collections Framework in Java:

* TreeSet is the child class of SortedSet and NavigableSet interfaces
* Represents the group of objects as a single entity where
* duplicates are not allowed
* According to some sorting order
* Default sorting order
* customized sorting order
* Heterogeneous objects are not allowed (For Sorting needs)
* Object Classes should be implementing Comparable Interface (StringBuffer is not supported)
* null insertion is not allowed (Exception)
* Default Sorting Order followed by empty TreeSet() constructor
* Comparable Interface and compareTo() method
* compareTo() has return type int
* Have to be used like this obj1.compareTo(obj2)
* TreeSet(Comparator) needs to be used for customized sorting order
* Comparator interface meant for customized sorting order
* compare() method return type int
* compare(obj1,obj2)
* Inserting Integer Objects in descending order
* Inserting Integer Objects in Insertion order
* Inserting Integer Objects in reverse of Insertion order
* Inserting String objects in reverse of Alphabetical order
* Inserting String Objects in Insertion order
* Inserting String Objects in reverse of Insertion order
* SortedSet specific methods demonstration
* NavigableSet specific methods demonstration