Win a copy of Python Continuous Integration and Delivery this week in the Python 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
  • Liutauras Vilda
  • Bear Bibeault
  • Paul Clapham
  • Jeanne Boyarsky
Sheriffs:
  • Devaka Cooray
  • Junilu Lacar
  • Tim Cooke
Saloon Keepers:
  • Tim Moores
  • Ron McLeod
  • Tim Holloway
  • Claude Moore
  • Stephan van Hulst
Bartenders:
  • Winston Gutkowski
  • Carey Brown
  • Frits Walraven

naming of an interface  RSS feed

 
Ranch Hand
Posts: 85
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
how come an interface can have a name like "Map.Entry"!!!??
(this is an interface in Collection framework... )


sajid
 
Greenhorn
Posts: 5
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Sajid,

Entry is static nested interface, inside interface Map.
This is almost like a static-nested class inside a class.

Consider the following code:


You can reference this via Outer.Inner, and even instantiate an object of an anonymous inner class, for example:


Simply put, a static nested interface behaves similarly to a static nested class - except it is an interface. (Technically it is not an "inner"-interface, just as static nested classes are not "inner"-classes).

Regards,
Glen
 
Consider Paul's rocket mass heater.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!