• 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

How classpath works for executable Jars

 
Greenhorn
Posts: 16
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I've found that when I create a Java batch application and Jar it up as an executable jar (Main-class indicated in manifest, run with "java -jar")

That my external dependant Jar files are never found unless I add them to the class-path in the executable Jar's manifest file.

I always get ClassNoDefFound errors if I try to define the class in any of the following ways:

- System environment variable "CLASSPATH"
- java -classpath parameter

I am wondering if there is something special about executable JAR files where you are required to specify your classpath inside of the manifest only or what else might be going on here.
 
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
Yes. CLASSPATH environment variables and the -classpath switch are both ignored when Java is running an executable jar.

Moving to Java in General (Beginner).
 
reply
    Bookmark Topic Watch Topic
  • New Topic