How to determine absolute path (if any) of a loaded Class?

java reflection jar classloader absolute-path
MRalwasser picture MRalwasser · Dec 28, 2010 · Viewed 25.1k times · Source

Is there a (compatible, if possible) way to determine the absolute path of a loaded Class?

Of course, this is not always possible (if you think of dynamically created classes), but if the loaded Class is inside a jar how to get the absolute path for this jar?

Answer

jmj picture jmj · Dec 28, 2010 
MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath()

Fullcode:

    package org.life.java.so.questions;
   /**
     *
     * @author jigar
     */
    public class GetClassPath {
        public static void main(String[] args) {
            System.out.println(GetClassPath.class.getProtectionDomain().getCodeSource().getLocation().getPath());      
        }
    }

Output:

/C:/Documents%20and%20Settings/argus/My%20Documents/NetBeansProjects/temp/build/classes/

Or

ClassLoader loader = GetClassPath.class.getClassLoader();
System.out.println(loader.getResource("org/life/java/so/questions/GetClassPath.class"));

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