Bounding volume with collada

i found that models loaded via collada always have bounding volumes applied already, so does this mean i dont need to apply the boundings myself?

in other words, i dont have to worry about bounding at all if load the collada model right?

If you are using the COLLADA converter that's in jmex.model.collada, then no, you don't need to set your own bounding volume. The converter does it for you.