How to get the path of a running JAR file?

Answer 1

I tried to get the jar running path using

String folder = MyClassName.class.getProtectionDomain().getCodeSource().getLocation().getPath();

c:\app>java -jar application.jar

Running the jar application named "application.jar", on Windows in the folder "c:\app", the value of the String variable "folder" was "\c:\app\application.jar" and I had problems testing for path's correctness

File test = new File(folder);
if(file.isDirectory() && file.canRead()) { //always false }

So I tried to define "test" as:

String fold= new File(folder).getParentFile().getPath()
File test = new File(fold);

to get path in a right format like "c:\app" instead of "\c:\app\application.jar" and I noticed that it work.