Models not importing into Mcreator

I was making a firetruck mod and tried to import a 3d model. I used blockbench to make the model and exported it as a java model. When I went to the sidebar and clicked import java 3d model, and went to the file location it said no files existed. When I checked again it didnt work. So I went to the forums and wiki to see if there was anything helpful, I tried everything and nothing worked. The file isn't showing up idk why...