IntConsumer.java revision e053d5ee5eea301559822c98e69874344c971502 
1/*
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25package java.util.function;
26
27import java.util.Objects;
28
29/**
30 * Represents an operation that accepts a single {@code int}-valued argument and
31 * returns no result.  This is the primitive type specialization of
32 * {@link Consumer} for {@code int}.  Unlike most other functional interfaces,
33 * {@code IntConsumer} is expected to operate via side-effects.
34 *
35 * <p>This is a <a href="package-summary.html">functional interface</a>
36 * whose functional method is {@link #accept(int)}.
37 *
38 * @see Consumer
39 * @since 1.8
40 * @hide 1.8
41 */
42@FunctionalInterface
43public interface IntConsumer {
44
45    /**
46     * Performs this operation on the given argument.
47     *
48     * @param value the input argument
49     */
50    void accept(int value);
51
52    /**
53     * Returns a composed {@code IntConsumer} that performs, in sequence, this
54     * operation followed by the {@code after} operation. If performing either
55     * operation throws an exception, it is relayed to the caller of the
56     * composed operation.  If performing this operation throws an exception,
57     * the {@code after} operation will not be performed.
58     *
59     * @param after the operation to perform after this operation
60     * @return a composed {@code IntConsumer} that performs in sequence this
61     * operation followed by the {@code after} operation
62     * @throws NullPointerException if {@code after} is null
63     */
64    default IntConsumer andThen(IntConsumer after) {
65        Objects.requireNonNull(after);
66        return (int t) -> { accept(t); after.accept(t); };
67    }
68}
69