Does bitcoinj need any full nodes? Does anyone know about this? I see BitPay and now Coinbase are already using its BIP 70 feature. I guess someone's running the 'J' iteration to support the nascent use sent its way. Anyone know the status on this?
I believe bitcoinj runs in SPV mode. So i don't think it downloads blockchain. bitcoinj does have full verification mode, but that mode is experimental. source:
http://bitcoinj.github.io/#getting-started