Get the path from where a class is loaded : ClassPath « Reflection « Java Tutorial

1. Java Tutorial
2. Reflection
3. ClassPath

public class Main {
  public static void main(String[] args) {
    Main csl = new Main();
    csl.getCodeSourceLocation();
  }

  private void getCodeSourceLocation() {
    System.out.println("Code source location: "
        + getClass().getProtectionDomain().getCodeSource().getLocation());
  }
}