Re: Finding resources on classpath specific entry

Lew <>
Fri, 10 Jul 2009 09:53:06 -0400
Karsten Wutzke wrote:

my classpath consists of several entries: the first entry is either
the JAR that the application was started from or (when run from the
local dev tree) the classes build dir plus some others for images,
language packs etc.

One purpose that JARs serve is as self-contained deployment artifacts, to be
run using "java -jar yourapp.jar". With the "-jar" option, the "java" command
ignores all classpath information not from the JAR file's manifest.

The notion is that the manifest contains all necessary information to run the
JARred application, as it should when used this way. That means that it would
look in a reliable location, i.e., the JAR itself or a subdirectory of the
JAR's deployment directory, for all libraries and resources, and not count on
the client environment for anything save the Java environment itself.

To ensure that themes are where you can find them, deliver them with the
application to a subdirectory of the JAR's location, and instruct the user to
store additional plugins there.


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