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Loading Resources within *.jar

John Luckcuck

Joined: Apr 18, 2002
Posts: 7
I'm trying to load a properties file located /config/fbn.props in my jar. This works fine outside the jar. I'm using:

If I use the same principle for loading an image, this works fine :

I assume the problem is comming up with a URL that is compatible with the "internal references" of the jar. What's the best way (or working way even!) of obtaining the path to files within the jar ?
Thanks in advance

J2EE Web Developer
John Luckcuck

Joined: Apr 18, 2002
Posts: 7
I've resolved this issue by using :
URL url = this.getClass().getResource("/config/fbn.props");
But maybe using a properties file was a little OTT in the first place :roll:
Peter den Haan
Ranch Hand

Joined: Apr 20, 2000
Posts: 3252
That's the way to do it -- the URL you get back will have the jar: pseudo-protocol and cannot be converted into a File. Using getResourceAsStream can simplify your code slightly.
- Peter
John Luckcuck

Joined: Apr 18, 2002
Posts: 7
Cheers Peter,
I've decided to stick with my properties file and leave it outside the jar (which is sensible) to allow users to pre-configure their client / server without having to specify command line parameters. Of course, I wont be ignoring the command line parameters, the properties file will merely define my defaults. Any extra command line parameters will overwrite those used in the properties file.
It is sorta covered in the JavaRanch Style Guide.
subject: Loading Resources within *.jar
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