java - Get location of JAR file

Question

I'm trying to get the location a Runnable JAR file is run from. I tried doing

try {
    String path = new java.io.File(".").getCanonicalPath();
} catch (IOException e) {
    e.printStackTrace();
}

But that returns:

C:UsersKevinDesktop/server/Server

while the JAR file is located at

C:UsersKevinDesktop

I also tried doing

return new file(Server.class.getProtectionDomain().getCodeSource().getLocation().getPath());

But that returns:

C:UsersKevinDesktopserver.jar/server/Server

So basicly I want the path of the JAR file without the filename and not the ClassPath.

Any way of doing this?

Answer 1

Update

Since it doesn't work in certain test-cases, I'll update the answer.

The correct way to do this should be with ClassLoader:

File jarDir = new File(ClassLoader.getSystemClassLoader().getResource(".").getPath());
System.out.println(jarDir.getAbsolutePath());

Tested on various classpaths, the output was correct.

---

Old answer

This should work

File f = new File(System.getProperty("java.class.path"));
File dir = f.getAbsoluteFile().getParentFile();
String path = dir.toString();

It works for me, my program is in:

C:UsersUser01Documentsapp1distJavaApplication1.jar

And it returns

C:UsersUser01Documentsapp1dist