使用java.nio.Files在Linux下更改文件所有者组

I have a Linux server and I'm running an image resize job in Java for multiple websites on my server. The website files are owned by different OS users/groups. Newly created thumbnails/previews are owned by the user running the resize job. Now I was googleing around how to change the file owner of newly created previews/thumbnails in my resize program and came across this:I have a Linux server and I'm running an image