Test the ability of a jar to overwrite itself

Main.java

package org.scijava;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {

     public static void main(String... args) throws IOException {

        //FIXME: set this path to the location of the jar containing this main class.
        String url = "C:/Users/Johannes/loci/test/target/scijava-tests-2.43.1-SNAPSHOT.jar";
        FileOutputStream output = new FileOutputStream(url, false);

        for (int i=0; i<100000; i++) {
          output.write(0);
        }

        output.close();
    }
}

So, to be clear: this works! On Windows. No file locking issue.