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76 lines
1.9 KiB
76 lines
1.9 KiB
/*
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.util.function;
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import java.util.Objects;
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/**
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* Represents an operation that accepts two input arguments and returns no
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* result. This is the two-arity specialization of {@link Consumer}.
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* Unlike most other functional interfaces, {@code BiConsumer} is expected
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* to operate via side-effects.
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*
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* <p>This is a <a href="package-summary.html">functional interface</a>
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* whose functional method is {@link #accept(Object, Object)}.
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*
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* @param <T> the type of the first argument to the operation
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* @param <U> the type of the second argument to the operation
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*
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* @see Consumer
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* @since 1.8
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*/
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@FunctionalInterface
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public interface BiConsumer<T, U> {
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/**
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* Performs this operation on the given arguments.
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*
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* @param t the first input argument
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* @param u the second input argument
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*/
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void accept(T t, U u);
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/**
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* Returns a composed {@code BiConsumer} that performs, in sequence, this
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* operation followed by the {@code after} operation. If performing either
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* operation throws an exception, it is relayed to the caller of the
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* composed operation. If performing this operation throws an exception,
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* the {@code after} operation will not be performed.
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*
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* @param after the operation to perform after this operation
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* @return a composed {@code BiConsumer} that performs in sequence this
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* operation followed by the {@code after} operation
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* @throws NullPointerException if {@code after} is null
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*/
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default BiConsumer<T, U> andThen(BiConsumer<? super T, ? super U> after) {
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Objects.requireNonNull(after);
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return (l, r) -> {
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accept(l, r);
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after.accept(l, r);
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};
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}
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}
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