From my readings, when you execute a command as follows:
java -jar foo.jar
Then the main classpath is ignored, and the classpath is taken from the manifest file.
Further, the classpath declared on the command line is also ignored. So in:
java -classpath /usr/local/jar/foobar.jar -jar foo.jar
/usr/local/jar/foobar.jar is ignored.
Lastly, I have read that the manifest file can only contain relative paths, within the jar file.
So, how do you include absolute paths to external jars, that are present on the system, but not in the jar file being executed?
Is there a reason why you are avoiding invoking the main class like
java -cp /usr/local/jar/foobar.jar:/some/other/path.jar com.your.main.classname
?
This type of invocation allows you to mix absolute paths with relative paths. Put this into a shell script or batch file to avoid having to actually type or remember the full classpath to simplify things.
You can create a folder, say lib, within the folder where you have the jar file.
Manifest.MF contents can be:
Main-Class: com.mastergaurav.test.app.MainClass
Class-Path: lib/one.jar lib/two.jar
Folder contents:
mainFolder/
* lib/one.jar
* lib/two.jar
* my-main.jar
To execute:
java -jar my-main.jar
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