java - Get name of running Jar or Exe

Question

What I need to do is get the name of the running jar/exe file (it would be an EXE on windows, jar on mac/linux). I have been searching around and I can't seem to find out how.

How to get name of running Jar or Exe?

Answer 1

File(MyClass.class.getProtectionDomain().getCodeSource().getLocation().toURI());?

returns simple path in the compiled application and an error in jar:

URI is not hierarchical

My solution is:

private File getJarFile() throws FileNotFoundException {
    String path = Main.class.getResource(Main.class.getSimpleName() + ".class").getFile();
    if(path.startsWith("/")) {
        throw new FileNotFoundException("This is not a jar file: 
" + path);
    }
    path = ClassLoader.getSystemClassLoader().getResource(path).getFile();

    return new File(path.substring(0, path.lastIndexOf('!')));
}