• 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

Anonymous Inner Class?

 
Ranch Hand
Posts: 63
IntelliJ IDE jQuery Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi

Is line 30 creating an anonymous inner class, or what purpose have the curly brackets there?


 
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

Sam Samson wrote:Is line 30 creating an anonymous inner class


Yes; although the word 'inner' is a bit redundant when it comes to anonymous classes.

Winston
 
Java Cowboy
Posts: 16084
88
Android Scala IntelliJ IDE Spring Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Note that in that example, it's a bit pointless to create an anonymous subclass of Bar. It could just as well have been:
 
Ranch Hand
Posts: 78
Eclipse IDE Spring Java
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
normally anonymous inner classes are created against interfaces / abstract classes. so as Jesper de Jong said, its pointless to create Bar as inner class.
 
Marshal
Posts: 79178
377
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What the empty pair bf braces do, is to delimit a class body which has nothing in. So you are creating an instance of an anonymous subclass of Bar which embodies no changes!It will only compile if the superclass has an accessible no-arguments or default constructor.
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic