• 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

abstract classes

 
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
it is seen and read in theory that abstract class cannot be instantiated but there is a program in which an abstract class is instantiated.



please comment on this

[ EJFH: Added "CODE" tags. ]
[ March 17, 2005: Message edited by: Ernest Friedman-Hill ]
 
author and iconoclast
Posts: 24204
44
Mac OS X Eclipse IDE Chrome
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You're not instantiating abstclass1 and abstclass2; you're instantiating anonymous inner classes that extend abstclass1 and abstclass2 and provide the missing methods. An anonymous class is a real class, and the compiler generates a .class file for it (in this case, likely called
AbstractClass_Ex3$1.class and AbstractClass_Ex3$2.class .) They just don't appear to have a name at the point of declaration. These anonymous classes are every bit as real as abstclass3 and abstclass4.

Note: when you post code, please use the UBB "code" tags. Below the text area where you type your message, there are a bunch of little buttons; one says "CODE". Use that one, and your code will appear formatted in your post.
 
Without subsidies, chem-ag food costs four times more than organic. Or this tiny ad:
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic