openjdk/jdk/src/share/classes/java/util/function/BiConsumer.java

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 * accompanied this code).
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package java.util.function;

/**
 * An operation which accepts two input arguments and returns no result. This is
 * the two-arity specialization of {@link Consumer}. Unlike most other
 * functional interfaces, {@code BiConsumer} is expected to operate via
 * side-effects.
 *
 * @param <T> the type of the first argument to the {@code accept} operation.
 * @param <U> the type of the second argument to the {@code accept} operation.
 *
 * @see Consumer
 * @since 1.8
 */
@FunctionalInterface
public interface BiConsumer<T, U> {

    /**
     * Performs operations upon the provided objects which may modify those
     * objects and/or external state.
     *
     * @param t an input object
     * @param u an input object
     */
    void accept(T t, U u);
}