[python-plugin] How does one create custom "File Types" (i.e. - .py Template File) that I can re-use easily through the menu.

Fellow NetBeans 20 Linux-amd64 (debian-12.5.0-amd64; myself), [python-plugin] How does one create custom "File Types" (i.e. - .py Template File) that I can re-use easily through the menu. Where are the plugins located and where would I begin to find a starting point to edit that part of

Main class problem with Netbeans IDE 21

I can build and run my jFrame project in Netbeans IDE 21. If I go to the folder where my .jar file is and double click on it, nothing happens. If I go to a console and run it with the command java -jar BFC.jar I get an error no main manifest attribute, in BFC.jar If I use the command java xf