* rename classes according to cammel case and make code reflect these updates
* rename according to cammel case
* rename to camel case more accuratley
* rename to camel case try 3; fix Ipb4 java doc
* retry rename camel case
* rename to camel case
- Rename getHash() to computeHash(): get.. suggests it's just retrieving some field but it's really doing a computation, which is quite complex depending on the hash algorithm