Spring with Hibernate Integration getting duplicate records

Question

In our project we are using Spring with Hibernate and we are using other team jars as dependent jars to fetch data from oracle data base.

We are getting duplicate records even though we implemented equals() and hashCode() methods in model classes and we are storing these object in HashSet. I am strange why set is allowing duplicate objects here. Even though hashCode() and equals() method is overridden ?.

If you observe the screen shot modcount size is different and table size is different

Please provide your code. It will help to understand the issue. — Sandeep Kokate
– Sandeep Kokate, Commented Mar 6, 2018 at 10:21
Btw, only because you implemented equals and hashCode does not mean you can't have duplicates. — Jan B.
– Jan B., Commented Mar 6, 2018 at 10:26

shanees mk · Accepted Answer · 2018-03-06 12:13:52Z

3

remove hashCode() or equals() from your class
if you are Override equals and hashcode methods in your class, then equal objects return the same hashCode.. the HashSet is not allowed the same hashcode because HashSet validating duplicate in based on hashCode, so the solution for you: you can remove hashCode() or equals() from your class

answered Mar 6, 2018 at 12:13

shanees mk

7012 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Spring with Hibernate Integration getting duplicate records

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related