Java MCQ: What is a TreeSet in Java?
a) A set that stores elements in a sorted order
b) A set that allows duplicates
c) A set that stores key-value pairs
d) A set that does not allow null elements
Answer:
a) A set that stores elements in a sorted order
Explanation:
A TreeSet in Java is a set that stores elements in a sorted order, determined either by their natural ordering or by a comparator provided at set creation. It does not allow duplicate elements.
Understanding TreeSet is essential for managing collections where sorted order is required in addition to uniqueness.
Reference links:
https://www.rameshfadatare.com/learn-java-programming/
https://www.javaguides.net/p/java-tutorial-learn-java-programming.html