In HashSet duplicates are allowed while adding to the HashSet, but while retre

In HashSet duplicates are allowed while adding to the HashSet,
but while retreiving the object from HashSet is not shown the
duplicate values, WHY ?

Question Posted / nand

2 Answers
7296 Views
Cap Gemini, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object fro..

Answer / brijendra kumar (xavient)

Actually in HashSet we are able to add the duplicate value,
but at the execution time JVM ignore the duplicate value.
HashSet<String> T= new HashSet<String>();
T.add("k");
T.add("k");
System.out.println("size" +T.size());
when we execute these line of code then we got the size of
HashSet is 1.
Due to this reason we are unable to iterate the duplicate
value from HashSet.

Is This Answer Correct ?

7 Yes

2 No

In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object fro..

Answer / shashi

Because HashSet class will override equals and hashcode method internally.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Java J2EE AllOther Interview Questions

What is difference between Application Server and Web Server?

1 Answers Logica CMG, SCS,

What is the use of log4j and how to make use of that in a application?

2 Answers

What is the servletcontext listener and what is JspContext and page context pls tell in simple words.

1 Answers IBM,

what is filter ?

2 Answers SolutionNET,

What are the different types of classes implemented in the set interfaces? : java collections

0 Answers

what is class/object diagram

3 Answers Zycus Infotech,

HOW MUCH PERCENTAGE WE DEDUCT FOR OUR SUPPLIERS OR OTHER PROFESSIONALS

0 Answers

What is need of DAO? Write one simple DAO example?

2 Answers IBM,

Write a interface "CarOperations" with the following methods void turnOnEngin() void turnOffEngin() void turnOnLigths() void turnOffLights() void turnLeft() void turnRight() void accelerate() void deaccelerate() void putBreaks() void releaseBreaks()

1 Answers

What is java collection? : java collections

0 Answers

"Sun Certified Java Programmer" This is one String , we need to print SCJP, write the java code dynamically? pls reply this questions

6 Answers Photon,

lll

1 Answers

For more Java J2EE AllOther Interview Questions Click Here