This week's book giveaway is in the Other Languages forum.
We're giving away four copies of Rust Web Development and have Bastian Gruber on-line!
See this thread for details.
Win a copy of Rust Web Development this week in the Other Languages 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:
  • Tim Cooke
  • Campbell Ritchie
  • Ron McLeod
  • Liutauras Vilda
  • Jeanne Boyarsky
Sheriffs:
  • Junilu Lacar
  • Rob Spoor
  • Paul Clapham
Saloon Keepers:
  • Tim Holloway
  • Tim Moores
  • Jesse Silverman
  • Stephan van Hulst
  • Carey Brown
Bartenders:
  • Al Hobbs
  • Piet Souris
  • Frits Walraven

Why are transient static variables allowed?

 
Ranch Hand
Posts: 1032
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I was just wondering why we can declare a variable to be transient and static. Since static variables are never serialized, it seems that the use of transient is superfluous.
 
Bartender
Posts: 6663
5
MyEclipse IDE Firefox Browser Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

it seems that the use of transient is superfluous



Just like declaring an interface abstract
 
Ruben Soto
Ranch Hand
Posts: 1032
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Deepak Bala wrote:

it seems that the use of transient is superfluous



Just like declaring an interface abstract


Thanks Deepak. I was wondering if there is any scenario which I might have overlooked which made the rationale for this something besides allowable superfluousness.
 
Ranch Hand
Posts: 177
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I don't think it is superfluous, consider the following situation. [Read the topic wrong!!!]
1) Serialize an Object
2) Do Some operations using the transient variable (increment or pass it to some method..)
3) Deserialize the Object
4) Try accessing the transient variable , it will be initialized to the default value.

But if you have marked the variable static, then it will not be initialized because the static does not belong to a particular instance.

I cranked some code to check this out.



 
Kavita Tipnis
Ranch Hand
Posts: 177
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Oops sorry , I read your question wrong the other way round!! but never mind the code can be a mock quiz question!
It is superfluous! [Ignore my earlier post's verbage !!]
 
Ruben Soto
Ranch Hand
Posts: 1032
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
No problem Kavita. You can start your own mock exam product with this example!
reply
    Bookmark Topic Watch Topic
  • New Topic