How to get the jar file without knowing its name and any class inside it?

Question

Hello, everybody!
I would like to know if there's a way to get a reference programatically to the initial jar without knowing its name and any class contained in it. By "initial jar" I mean the jar that was called in the prompt, like this:
java -jar jarfile.jaror in another way, in a graphical system. To be sincere what I really want is to get a reference to the jar's manifest, but I know if I can get a reference to the jar I can get a reference to its manifest file. Or if you know a way to get the manifest directly, it would also help. So, is there a way to do this?
Thank you.
Marcos

Answer 1

jverd wrote:
marcos_aps wrote:
abillconsl wrote:
Can you be more specific - IOW, can you cite a specific case?Absolutely. I want to access the jar in source code with the java.util.zip.JarFile class, for example.But why? You still haven't provided a use case or explained what you're trying to accomplish. As already pointed out, whatever you're trying to do, this is a brittle solution. If you explain what you're trying to accomplish with this, somebody may be able to suggest a better approach.jverd, I explained for baftos. Anyway, I will try to be more specific. I start my sytem like this, from, say, for example, jar1.jar:
import br.product.System;
public static void main(String[] args)
    System.start("NameOfTheSystem");
}The System class is in util.jar, for example. This jar is used by all systems. I wouldn't like to pass in the name of the system, as above. I would like that the System class could read it from jar1.jar's manifest file. I just would like to have this:
import br.product.System;
public static void main(String[] args)
    System.start();
}It is more elegant and I don't have the name of the system in two places: code and manifest file.
Marcos