• 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
  • Tim Cooke
  • Devaka Cooray
  • Ron McLeod
  • Jeanne Boyarsky
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Piet Souris
  • Carey Brown
  • Tim Holloway
Bartenders:
  • Martijn Verburg
  • Frits Walraven
  • Himai Minh

Can we create our own custom Marker Interface in Java ?

 
Greenhorn
Posts: 20
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi all ,

Can we create our own Marker Interface in Java ....? Is it possible ?
 
Bartender
Posts: 5167
11
Netbeans IDE Opera Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What happened when you tried it?
 
Ranch Hand
Posts: 300
Eclipse IDE Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
hi,

You cant create marker interface which have singinificane with JVM but yes you can create marker interface to check for the instance equality.
So you can create your marker interface but that interface will not have any significance in JVM.
You can refer to this thread
https://coderanch.com/t/325243/java/java/marker-interface

Regards
Jatan
 
Bartender
Posts: 10780
71
Hibernate Eclipse IDE Ubuntu
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Santanu Guha wrote:Can we create our own Marker Interface in Java ....? Is it possible ?


Sure. Just be sure to document and publicise it well, because they're very easy to overlook. The number of custom Lists I've seen where the developer has forgotten to implement RandomAccess is a good case in point.

Another possibility to consider would be an interface with a single method (isInterfaceName() ?) that returns a boolean. That way the interface can't be ignored or forgotten, and it can be implemented without adding any extra fields.

Winston
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic