Answer: TreeSet and Treemap has the following differences :-
- TreeSet is used for the implementation of the Set interface while TreeMap are used for invoking of the interface of the map.
- Duplicate object values are not present in the TreeSet but TreeMap has the ability to have the duplicate object values.
- TreeSet comes in the order of sorted objects while TreeMaps have sorted keys.
- TreeMap has the storage of the single object values while Treemap can store object values as well as keys .