Discussion
What will be the output of the program?
import java.util.*;
public class Example07
{
public static void main(String[] args)
{
Set<Integer> s = new TreeSet<Integer>();
s.add(30); s.add(10); s.add(20);
System.out.println(s);
}
}
Answer: C
A TreeSet keeps its elements sorted by their natural ordering, which for Integer is ascending numeric order, so insertion order is irrelevant and the output is [10, 20, 30]. A HashSet would give no ordering guarantee and a LinkedHashSet would preserve insertion order.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development