• 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

Same variables in a class function

 
Rancher
Posts: 659
10
Android Tomcat Server Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What are all num referring to ?
 
Sheriff
Posts: 7123
184
Eclipse IDE Postgres Database VI Editor Chrome Java Ubuntu
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Tell us what you think the answer is and why.
 
Marshal
Posts: 76867
366
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
And why did you call method() a class function?
 
Greenhorn
Posts: 15
IntelliJ IDE Postgres Database Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Randy Tong wrote:What are all num referring to ?



As I see it: second variable 'num' in line 6 - is initialized with self assignment. It means assignments of a variable to itself.
So, it is redundant and should be removed as it doesn't have any effect and it is completely unnecessary.
 
Campbell Ritchie
Marshal
Posts: 76867
366
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
It is the sort of thing that might come up in exams; it is necessary for OP, if he hasn't forgotten he asked this question three weeks ago, to understand how the code works and what the value/s is/are at the end of a run of that method.
Of course, I have an idea what a hightly optimised version of that code might do
 
When it is used for evil, then watch out! When it is used for good, then things are much nicer. Like this tiny ad:
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic