QuipoIn

Java TreeSet

Which property makes TreeSet unique among Set implementations?

A. It maintains insertion order 

B. It stores elements in sorted order 

C. It allows duplicate values 

D. It allows multiple nulls 

What is the underlying data structure of a TreeSet in Java?

A. HashMap 

B. Hashtable 

C. TreeMap (Red-Black Tree) 

D. LinkedList 

How many null values can a TreeSet contain?

A. None

B. One

C. Multiple

D. Depends on Comparator

What will happen if we try to insert a heterogeneous object into a TreeSet without a custom Comparator?

A. It will accept it 

B. It will replace existing values 

C. It will throw ClassCastException 

D. It will sort automatically 

Which of the following interfaces does TreeSet implement?

A. Set, List, Map 

B. Set, SortedSet, NavigableSet 

C. Collection, List, SortedMap 

D. Set, Queue, Deque 