• 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
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Comparing two Java Objects

 
Ranch Hand
Posts: 151
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Dear All,

I have a question. I want to compare two java beans of the same type. My problem is this, my bean is having
almost 100 fields, so if i start comparing the properties one by one, it will be hell lot tedious. Like we use BeanUtils.copy()
to copy the properties from one bean to the other, can we compare two beans somewhat?

I don't want to compare the properties one by one. Secondly my java bean is a simple bean, it is not implementing any
comparator interface even.

Any help or pointer in this regard will be highly helpful.

Warmly,
Ben
 
Ranch Hand
Posts: 249
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
no need to check each field... just like you have a composite primary key in databases, try identifying a few number of fields which will identify your object as unique... and companre those fields in the equals() method.
 
Ben Zaidi
Ranch Hand
Posts: 151
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Actually i am writing a JUnit test case and for this purpose, i need to compare the full result with the desire bean

 
Sheriff
Posts: 22791
131
Eclipse IDE Spring Chrome Java Windows
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You can use reflection, but you lose control over the order in which the fields are compared that way.
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic