| Package | Description |
|---|---|
| org.bitcoin | |
| org.bitcoin.paymentchannel | |
| org.bitcoin.protocols.payments | |
| org.bitcoinj.core |
The core package contains classes for network messages like
Block and
Transaction, peer connectivity via PeerGroup,
block chain management and the Wallet class. |
| org.bitcoinj.crypto |
The crypto package contains classes that work with key derivation algorithms like scrypt (passwords to AES keys),
BIP 32 hierarchies (chains of keys from a root seed), X.509 utilities for the payment protocol and other general
cryptography tasks.
|
| org.bitcoinj.jni | |
| org.bitcoinj.kits |
High level wrapper APIs around the bitcoinj building blocks.
|
| org.bitcoinj.net |
Classes handling low level network management using either NIO (async io) or older style blocking sockets (useful for
using SOCKS proxies, Tor, SSL etc).
|
| org.bitcoinj.net.discovery |
Classes that know how to discover peers in the P2P network using DNS, IRC or DNS via Tor (orchid).
|
| org.bitcoinj.params |
Network parameters encapsulate some of the differences between different Bitcoin networks such as the main/production
network, the testnet, regtest mode, unit testing params and so on.
|
| org.bitcoinj.protocols |
High level protocols that build on top of Bitcoin go here: we have the payment protocol for sending transactions
from sender to receiver with metadata, and a micropayment channels implementation.
|
| org.bitcoinj.protocols.channels |
Micropayment channels allow for rapid tiny payments to be made to a third party once a channel has been set up, using
some of the advanced features of the Bitcoin protocol.
|
| org.bitcoinj.protocols.payments |
The BIP70 payment protocol wraps Bitcoin transactions and adds various useful features like memos, refund addresses
and authentication.
|
| org.bitcoinj.script |
Classes for working with and executing Bitcoin script programs, as embedded in inputs and outputs.
|
| org.bitcoinj.signers |
Transaction signers know how to calculate signatures over transactions in different contexts, for example, using
local private keys or fetching them from remote servers.
|
| org.bitcoinj.store |
Block stores persist blockchain data downloaded from remote peers.
|
| org.bitcoinj.testing |
Various utilities for writing unit tests: also useful for testing your own code and apps that build on top of
bitcoinj.
|
| org.bitcoinj.uri |
Parsing and handling of bitcoin: textual URIs as found in qr codes and web links.
|
| org.bitcoinj.utils |
Formatting monetary amounts, representing exchange rates, a program for loading Bitcoin Core saved block files,
a class to control how bitcoinj uses threads and misc other utility classes that don't fit anywhere else.
|
| org.bitcoinj.wallet |
Classes that support the
Wallet, which knows how to find and save transactions relevant to
a set of keys or scripts, calculate balances, and spend money: the wallet has many features and can be extended
in various ways, please refer to the website for documentation on how to use it. |
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