public static com.jme3.math.Quaternion convert(javax.vecmath.Quat4f oldQuat, com.jme3.math.Quaternion newQuat) {
        newQuat.set(oldQuat.x, oldQuat.y, oldQuat.z, oldQuat.w);
        return newQuat;
    }
Nice convenience methods for conversion between javax.vecmath and com.jme3.math
Objects, also some jme to jbullet mesh conversion.
@author normenhansen
jme3-jbullet/src/main/java/com/jme3/bullet/util/Converter.java