• 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
  • paul wheaton
  • Paul Clapham
  • Ron McLeod
Sheriffs:
  • Jeanne Boyarsky
  • Liutauras Vilda
Saloon Keepers:
  • Tim Holloway
  • Carey Brown
  • Roland Mueller
  • Piet Souris
Bartenders:

stackoverflow error

 
Ranch Hand
Posts: 44
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

I just want to know how the  above code works..and what to do to get rid of stack overflow error.
 
Ranch Hand
Posts: 40
1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Issue appears to be with :

Bird a=new Bird();

 
Luanrkiran kumar
Ranch Hand
Posts: 44
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I just wanted to know how it works.
 
Rancher
Posts: 4801
50
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Let's step through it.

When you execute this code, the first thing that the code in main() does is create a new Bird instance.

Now, when a Bird instance is created it has a Bird attribute, which is declared and instantiated at the same time (line 2).
So, main creates a Bird instance, which itself creates a Bird instance...which itself creates a Bird instance...and so on.
 
Ranch Hand
Posts: 95
1
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi Luanrkiran kumar.

Luanrkiran kumar wrote:
I just want to know how the  above code works..and what to do to get rid of stack overflow error.



- a is an isntance of Bird, which is instantiated at construction of Bird object
- When you construct a Bird object a is instantiated calling the Bird constructor another time.
- So every time you call new Bird(), a is created calling new Bird() again.
- So for Bird bird = new Bird(), This code cicles endlessly creating an abject like bird.a.a.a.a.a.a.a.a ....

To escape this code you can change the code in various way.
One option I suggest is to set the variable a static
 
Luanrkiran kumar
Ranch Hand
Posts: 44
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
thank you, it was helpful.
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
reply
    Bookmark Topic Watch Topic
  • New Topic