Win a copy of Spark in Action this week in the Open Source Projects 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 ...
Marshals:
  • Campbell Ritchie
  • Bear Bibeault
  • Ron McLeod
  • Jeanne Boyarsky
  • Paul Clapham
Sheriffs:
  • Tim Cooke
  • Liutauras Vilda
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • fred rosenberger
  • salvin francis
Bartenders:
  • Piet Souris
  • Frits Walraven
  • Carey Brown

Creation of objects and serialzation

 
Ranch Hand
Posts: 515
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
ok.. so I have an object that implements serializable. If this object contains other objects, do these internal objects need to be serializable in order to make it all serializable or does the parent implementing serializable automatically apply it to everything.
 
Ranch Hand
Posts: 1780
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

For an instance of A to successfully serialize, field b must either be null or reference an object that is an instance of a serializable class. Perhaps B implements/extends Serializable or the object referenced is an instance of a subclass of B which itself implements Serializable. A common case of this would be if B were an interface that does not extend Serializable, say List.

There is no automatic transference of serializability to fields in Java, as you may have been hoping for

Field c is guaranteed to work because it is transient. This may require you to implement a writeObject/readObject method. See the API for Serializable.
 
Dale DeMott
Ranch Hand
Posts: 515
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
So in other words, I need to have all objects that are IN a serialized object also be serializable in order to serialize it?
 
    Bookmark Topic Watch Topic
  • New Topic