• 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

Array doubt

 
Ranch Hand
Posts: 35
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

for the code above I had expected the o/p to be 0.Arrays are initialized irrespective of their location.This being a primitive int array,I had expected the o/p to be 0,where as ,when this piece of code is run we get a runtime exception(NullPointerException).Please explain why?
 
Ranch Hand
Posts: 580
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
HI

U have created only reference not allocated space for it,once you allocated space then default value will be stored.

change this line to

private static int[] x;

this

private static int[] x=new int[10];

Then Ur expected result will arrive
 
I don't get it. A whale wearing overalls? How does that even work? It's like a tiny ad wearing overalls.
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic