Backspace key and Arrows in JPython

[binette]

I have both Python and JPython installed on my linux box (redhat).

For some reason I have no problem using the up and down arrows to access
past command (bash shell style) in Python but can't use 'hem in JPython.
Same for the Backspace key.

Can someone tell me how to do it?

(Also, I have no idea how to  fix it (generally) on linux either.  I
just know that some shells let me do it and others don't)

Thanks.

Sebastien