src/share/classes/java/util/function/DoubleConsumer.java
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rev 7675 : 8019840: Spec updates for java.util.function
Reviewed-by: mduigou
Contributed-by: brian.goetz@oracle.com
*** 25,68 ****
package java.util.function;
import java.util.Objects;
/**
! * An operation which accepts a single double argument and returns no result.
! * This is the primitive type specialization of {@link Consumer} for
! * {@code double}. Unlike most other functional interfaces,
* {@code DoubleConsumer} is expected to operate via side-effects.
*
* @see Consumer
* @since 1.8
*/
@FunctionalInterface
public interface DoubleConsumer {
/**
! * Accept an input value.
*
! * @param value the input value
*/
void accept(double value);
/**
! * Returns a {@code DoubleConsumer} which performs, in sequence, the operation
! * represented by this object followed by the operation represented by
! * another {@code DoubleConsumer}.
! *
! * <p>Any exceptions thrown by either {@code accept} method are relayed
! * to the caller; if performing this operation throws an exception, the
! * other operation will not be performed.
*
! * @param other a DoubleConsumer which will be chained after this
! * DoubleConsumer
! * @return an DoubleConsumer which performs in sequence the {@code accept} method
! * of this DoubleConsumer and the {@code accept} method of the specified IntConsumer
! * operation
! * @throws NullPointerException if other is null
*/
! default DoubleConsumer chain(DoubleConsumer other) {
! Objects.requireNonNull(other);
! return (double t) -> { accept(t); other.accept(t); };
}
}
--- 25,67 ----
package java.util.function;
import java.util.Objects;
/**
! * Represents an operation that accepts a single {@code double}-valued argument and
! * returns no result. This is the primitive type specialization of
! * {@link Consumer} for {@code double}. Unlike most other functional interfaces,
* {@code DoubleConsumer} is expected to operate via side-effects.
*
+ * <p>This is a <a href="package-summary.html">functional interface</a>
+ * whose functional method is {@link #accept(double)}.
+ *
* @see Consumer
* @since 1.8
*/
@FunctionalInterface
public interface DoubleConsumer {
/**
! * Performs this operation on the given argument.
*
! * @param value the input argument
*/
void accept(double value);
/**
! * Returns a composed {@code DoubleConsumer} that performs, in sequence, this
! * operation followed by the {@code after} operation. If performing either
! * operation throws an exception, it is relayed to the caller of the
! * composed operation. If performing this operation throws an exception,
! * the {@code after} operation will not be performed.
*
! * @param after the operation to perform after this operation
! * @return a composed {@code DoubleConsumer} that performs in sequence this
! * operation followed by the {@code after} operation
! * @throws NullPointerException if {@code after} is null
*/
! default DoubleConsumer andThen(DoubleConsumer after) {
! Objects.requireNonNull(after);
! return (double t) -> { accept(t); after.accept(t); };
}
}