My code runs inside a jar file, say foo.jar, and I need to know, in the code, in which folder the running foo.jar is.
So, if foo.jar is in C:\FOO\, I want to get that path no matter what my current working directory is.
+1
A:
Use ClassLoader.getResource() to find the URL for your current class.
For example:
package foo;
public class Test
{
public static void main(String[] args)
{
ClassLoader loader = Test.class.getClassLoader();
System.out.println(loader.getResource("foo/Test.class"));
}
}
(This example taken from a similar question.)
To find the directory, you'd then need to take apart the URL manually. See the JarClassLoader tutorial for the format of a jar URL.
Jon Skeet
2008-11-26 12:34:31
My JAR file is obfuscated, so this answer does not solve my problem. But I haven't specified that in the question, so this is still a valid answer.
Morgaelyn
2009-06-03 14:43:36
If it's obfuscated, use Test.class.getName() and do appropriate munging.
Jon Skeet
2009-06-03 14:53:57
+6
A:
return new File(MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath());
Obviously, this will do odd things if you class was loaded from a non-file location.
Zarkonnen
2008-11-26 12:50:03
In order for this answer to work, it needed a small modification:return new File(MyClass.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath());PS: This doesn't work in JVMs previous to 1.5.
Morgaelyn
2008-12-01 13:37:03