Another solution is to create the animations in blender and export the model multiple times at each major movement of the animation. Export say 6 different positions of the animation from start to finish and load each mesh using the Animation class in jPCT when creating the model. jPCT will automatically calculate the vector positions during each frame at the assumed position between each of those 6 animation models using a float value from 0f to 1f.
Hopefully that makes sense :p It may sounds complicated but it's not once you understand how it works.