org.bitcoinj.wallet

Class KeyChainGroup.Builder

java.lang.Object

org.bitcoinj.wallet.KeyChainGroup.Builder

Enclosing class:

KeyChainGroup

public static class KeyChainGroup.Builder
extends java.lang.Object

Builder for KeyChainGroup. Use KeyChainGroup.builder(NetworkParameters) to acquire an instance.

Method Summary

Modifier and Type	Method and Description
KeyChainGroup.Builder	addChain(DeterministicKeyChain chain) Add a single chain.
KeyChainGroup	build()
KeyChainGroup.Builder	chains(java.util.List<DeterministicKeyChain> chains) Add multiple chains.
KeyChainGroup.Builder	fromRandom(Script.ScriptType outputScriptType) Add chain from a random source.
KeyChainGroup.Builder	fromSeed(DeterministicSeed seed, Script.ScriptType outputScriptType) Add chain from a given seed.
KeyChainGroup.Builder	lookaheadSize(int lookaheadSize) Set a custom lookahead size for all deterministic chains
KeyChainGroup.Builder	lookaheadThreshold(int lookaheadThreshold) Set a custom lookahead threshold for all deterministic chains

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

fromRandom

public KeyChainGroup.Builder fromRandom(Script.ScriptType outputScriptType)

Add chain from a random source.

In the case of P2PKH, just a P2PKH chain is created and activated which is then the default chain for fresh addresses. It can be upgraded to P2WPKH later.

In the case of P2WPKH, both a P2PKH and a P2WPKH chain are created and activated, the latter being the default chain. This behaviour will likely be changed with bitcoinj 0.16 such that only a P2WPKH chain is created and activated.

Parameters:

outputScriptType - type of addresses (aka output scripts) to generate for receiving

fromSeed

public KeyChainGroup.Builder fromSeed(DeterministicSeed seed,
                                      Script.ScriptType outputScriptType)

Add chain from a given seed.

In the case of P2PKH, just a P2PKH chain is created and activated which is then the default chain for fresh addresses. It can be upgraded to P2WPKH later.

In the case of P2WPKH, both a P2PKH and a P2WPKH chain are created and activated, the latter being the default chain. This behaviour will likely be changed with bitcoinj 0.16 such that only a P2WPKH chain is created and activated.

Parameters:

seed - deterministic seed to derive all keys from

outputScriptType - type of addresses (aka output scripts) to generate for receiving

addChain

public KeyChainGroup.Builder addChain(DeterministicKeyChain chain)

Add a single chain.

Parameters:

chain - to add

chains

public KeyChainGroup.Builder chains(java.util.List<DeterministicKeyChain> chains)

Add multiple chains.

Parameters:

chains - to add

lookaheadSize

public KeyChainGroup.Builder lookaheadSize(int lookaheadSize)

Set a custom lookahead size for all deterministic chains

Parameters:

lookaheadSize - lookahead size

lookaheadThreshold

public KeyChainGroup.Builder lookaheadThreshold(int lookaheadThreshold)

Set a custom lookahead threshold for all deterministic chains

Parameters:

lookaheadThreshold - lookahead threshold

build

public KeyChainGroup build()