Package org.bitcoinj.wallet

Interface CoinSelector

All Known Implementing Classes:
AllowUnconfirmedCoinSelector, DefaultCoinSelector, FilteringCoinSelector, KeyTimeCoinSelector
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface CoinSelector
A CoinSelector is responsible for picking some outputs to spend, from the list of all possible outputs. It allows you to customize the policies for creation of transactions to suit your needs. The select operation may return a CoinSelection that has a valueGathered lower than the requested target, if there's not enough money in the wallet.

  • Method Details

    • select

      CoinSelection select(Coin target, List<TransactionOutput> candidates)
      Creates a CoinSelection that tries to meet the target amount of value. The candidates list is given to this call and can be edited freely. See the docs for CoinSelection to learn more, or look a the implementation of DefaultCoinSelector.

    • fromPredicate

      static CoinSelector fromPredicate(Predicate<TransactionOutput> predicate)
      Create a CoinSelector from a predicate function that filters a single TransactionOutput
      Parameters:
      predicate - Returns true if a "coin" (TransactionOutput) should be included.
      Returns:
      A CoinSelector that only returns coins matching the predicate