• 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
  • Jeanne Boyarsky
  • Ron McLeod
Sheriffs:
  • Paul Clapham
  • Liutauras Vilda
  • Devaka Cooray
Saloon Keepers:
  • Tim Holloway
  • Roland Mueller
Bartenders:

NullPointerException?

 
Ranch Hand
Posts: 3061
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator


The above code produces output such as



What could cause a NullPointerException? allowedFile is a File object, and as you can see it is NOT null. Besides, if it was, the AllowedProperty constructor throws a NullPointerException with a custom message:

Any ideas why I get a NPE?
 
author and iconoclast
Posts: 24207
46
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
The stack trace says the error occurs in the AllowedProperty constructor at line 53. Show us that whole constructor and point out which is line 53 (the first line in a file is line 1) and I will tell you exactly what the problem is.
 
Layne Lund
Ranch Hand
Posts: 3061
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thanks. I figured it out. I'm using Netbeans and it took me to the line in the setUp() method when I double clicked on the JUnit output. No wonder I was confused by that.

Layne
 
Your mother is a hamster and your father smells of tiny ads!
Smokeless wood heat with a rocket mass heater
https://woodheat.net
reply
    Bookmark Topic Watch Topic
  • New Topic