Win a copy of Escape Velocity: Better Metrics for Agile Teams this week in the Agile and Other Processes forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Tim Cooke
  • Paul Clapham
  • Jeanne Boyarsky
Sheriffs:
  • Ron McLeod
  • Frank Carver
  • Junilu Lacar
Saloon Keepers:
  • Stephan van Hulst
  • Tim Moores
  • Tim Holloway
  • Al Hobbs
  • Carey Brown
Bartenders:
  • Piet Souris
  • Frits Walraven
  • fred rosenberger

equals and hashcode methods

 
Ranch Hand
Posts: 80
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have written a class Person and overridden equals and hashcode methods. But while adding Person objects to HashSet I am able to add duplicates. So it seems my implementation of equals/hashcode is not correct.

Can someone please tell me where I am doing wrong?



At line 1 I am getting HashSet size as 4 instead of 3!!!


Thanks
Murali...
[ August 07, 2007: Message edited by: Murali Kakarla ]
 
Ranch Hand
Posts: 1140
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Try changing hashcode to hashCode!
 
Murali Kakarla
Ranch Hand
Posts: 80
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thanks Mani. It worked

I really did
I think this is good experience to me before taking exam

Murali...
 
Mani Ram
Ranch Hand
Posts: 1140
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Note that you can use the @Override annotation to catch such mistakes. The compiler would have raised an error.
 
Happily living in the valley of the dried frogs with a few tiny ads.
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic