Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (710)
Games in Android Showcase (212)
games submitted by our members
Games in WIP (784)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Trouble loading resources from inside JAR file...  (Read 6627 times)
0 Members and 1 Guest are viewing this topic.
Offline Addictman

Senior Devvie

Medals: 3
Projects: 1

Java games rock!

« Posted 2009-01-02 01:27:41 »

Hi there.

I am having some problems loading resources from within a jar file, and I don't really know why...

Scenario: Project A (the "executable" project) uses project B ( lib project ).
Project B contains a class for loading resources.

It loads resources the typical way with MyClass.class.getClassLoader().getResource(..)

Now, while using Eclipse, this works great ( after setting some extra src folders. I have a src/bin setup for source files / compiled files ).

I did some basic tests, printing out various resource locations. For instance, take MyClass.class.getClassLoader().getResource(".");
In Eclipse, it rightly returns the folder from which Project A is launched. However, in the jar file, it returns null. In fact, everything I tried as a resource returned null.

Comparing the eclipse project files with the jar extracted confirms that the paths seem correct...

Anyone got an idea of what's going on here?
Offline Renoria

Junior Devvie


« Reply #1 - Posted 2009-01-04 10:16:01 »

Yes, You cannot access files within a JAR using getResource(). You must use getResourceAsStream().

The reason it works in eclipse is because it executes it using class files not a JAR.
Offline woogley
« Reply #2 - Posted 2009-01-04 18:00:43 »

You can, in fact, use getResource() from within a JAR file. What you can't do is use getResource().getFile()

What you are facing may be related to the classloader. I would try getClass().getResource(...)

I just posted an example with source code last night of a JAR reading a file using getClass().getResource(...) .. see if that works for you.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Addictman

Senior Devvie

Medals: 3
Projects: 1

Java games rock!

« Reply #3 - Posted 2009-01-10 09:34:05 »

Thanks, I got it working. I must have been very tired when I had the problem.. Hehe. I was attempting to reach directories. Naturally this works well outside a jar, but not so well inside it, since the structure is flat. Oh well Smiley It was a typical 'DOH' problem.
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

theagentd (77 views)
2017-02-18 13:42:33

theagentd (82 views)
2017-02-18 13:35:16

h.pernpeintner (1248 views)
2017-01-24 22:39:11

h.pernpeintner (1236 views)
2017-01-24 22:38:32

Galdo (1787 views)
2017-01-12 13:44:09

Archive (1902 views)
2017-01-02 05:31:41

0AndrewShepherd0 (2438 views)
2016-12-16 03:58:39

0AndrewShepherd0 (2288 views)
2016-12-15 21:50:57

Lunch (2367 views)
2016-12-06 16:01:40

ral0r2 (2154 views)
2016-11-23 16:08:26
List of Learning Resources
by elect
2016-09-09 09:47:55

List of Learning Resources
by elect
2016-09-08 09:47:20

List of Learning Resources
by elect
2016-09-08 09:46:51

List of Learning Resources
by elect
2016-09-08 09:46:27

List of Learning Resources
by elect
2016-09-08 09:45:41

List of Learning Resources
by elect
2016-09-08 08:39:20

List of Learning Resources
by elect
2016-09-08 08:38:19

Rendering resources
by Roquen
2016-08-08 05:55:21 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!