• 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

What class must an inner class extend

 
Greenhorn
Posts: 16
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi all friends! I'm a freshman for this forum and this is my first post.
Below question's ans is 3, but I think it should be 2. Could you pls help me and give me the explanation! Many thans!
What class must an inner class extend:
Mutiple:
1) The top level class
2) The Object class
3) Any class or interface
4) It must extend an interface
 
Ranch Hand
Posts: 326
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Answer 2 would restrict inner classes to extending only the Object class, Answer 3, on the other hand, includes the Object class in its 'any class or interface' statement.
 
Richard Yi
Greenhorn
Posts: 16
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Mn~~~ Ray, I think the question is "MUST extend", NOT "could extend" . An inner class could extend any classes and interfaces of course.
[ February 04, 2004: Message edited by: Richard Yi ]
 
Danger, 10,000 volts, very electic .... tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic