How can I sync the balance an transactions for a wallet?

I have a few questions. The first is why doesn't the Account class have a member that is an ArrayList or something similar that holds all the transactions for that account? From what I saw in the code, there is no way to actually store all the transactions for a wallet. Assuming there isn't a way to store these, is there at least a method for downloading them? I would also like to know if there is a callback for when the account balance is set when you call client.account(...). I see in the code that by calling client.account(...), it automatically requests the account root, but how are we supposed to know when we got a response?

[sublimator]

Never got around to it :)

As stated in the README, the client is pretty crappy, and unless you know what you are doing (read: can modify to fix bugs etc), I wouldn't use it ...

Alright, how reliable do you think the core library is? I was planning on using it to generate wallets and create transaction objects from JSON.

[sublimator]

Yeah, you're probably OK with that. I have a fair degree of confidence in that, and also, rippled will validate the transactions. Wallet generation is also likely fine.