Win a copy of Learning OpenStack Networking: Build a solid foundation in virtual networking technologies for OpenStack-based clouds this week in the Cloud/Virtualization 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 all forums
this forum made possible by our volunteer staff, including ...
  • Liutauras Vilda
  • Campbell Ritchie
  • Tim Cooke
  • Bear Bibeault
  • Devaka Cooray
  • Jeanne Boyarsky
  • Knute Snortum
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Ganesh Patekar
  • Stephan van Hulst
  • Pete Letkeman
  • Carey Brown
  • Tim Holloway
  • Ron McLeod
  • Vijitha Kumara

Clone method showing different values for different programs.  RSS feed

Ranch Hand
Posts: 63
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
My task is to
1. Instantiate an object(a)
2. declare an other of the same class(b)
3. clone the object in step 1 to step 2(b=a.clone())
4. check if a and b are equal(a== b and a.equals(b))
5 Declare a hashset and add both a and b to the hashset.

Now my issues are as below
1. For Code 1 below HashSet is showing 1 as the count
2. For Code 2 below HashSet is showing 2 as the count.

Code 2
Posts: 4181
IntelliJ IDE Java Python
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

VenkataPrasad Regula wrote:

You probably want to make the second assignment like y = b.hashcode(); Anyways, if you want your objects to behave properly when put into HashSets then you need to properly override the equals() and hashCode() methods. See this journal article for details:
Don't get me started about those stupid light bulbs.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!