@oxplay2
Thank you for your reply.
gltf is promising.
My game loads various files dynamically with simpleInitApp ().
The meaning at runtime is that it is a format that can be handled only by jme3 without sdk.
A Simple Application that loads a blend model and then export it using BinaryExporter.
Perhaps this answer means that if you use a .blend file, you will do a development task that convert with sdk each time. I am a beginner and I am not sure if this interpretation is correct. If so, the .blend file is not a format that jme3 can directly handle.
https://wiki.jmonkeyengine.org/jme3/intermediate/best_practices.html
Don’t reference Blender / Ogre / OBJ files in your load () code, because these unoptimized files are not packaged into the JAR.
This tutorial means that assets in some formats are ignored when creating an executable binary through sdk.
So the formats that jme3 and sdk can handle are different.
So I added to the checklist that jme3 can handle it directly. In the word runtime.