This question is kind of related to our web application and it is bugging me from last few months. So we use linux server for database, application and we have our custom built java web server. If we do any change in source code of application, we build a new jar file and replace the existing jar file with new jar file. Now update to take place in live application, we just execute a HTML file which contains this kind of code :

```
<frameset rows="100%"?
<frame src="http://mydomain.com:8001/RESTART">
</frameset>

```

How does this opening of port make the application to use new jar file?