OpenJDK 27 · java.util.function.DoubleUnaryOperator · APIdia, the JavaDoc alternative

Represents an operation on a single double-valued operand that produces a double-valued result. This is the primitive type specialization of UnaryOperator for double.

This is a functional interface whose functional method is applyAsDouble(double).

Method Summary

Modifier and Type	Method and Description
public default DoubleUnaryOperator	Returns: a composed operator that first applies this operator and then applies the `after` operator andThen(DoubleUnaryOperator the operator to apply after this operator is applied after) Returns a composed operator that first applies this operator to its input, and then applies the `after` operator to the result.
public double	Returns: the operator result applyAsDouble(double the operand operand) Applies this operator to the given operand.
public default DoubleUnaryOperator	Returns: a composed operator that first applies the `before` operator and then applies this operator compose(DoubleUnaryOperator the operator to apply before this operator is applied before) Returns a composed operator that first applies the `before` operator to its input, and then applies this operator to the result.
public static DoubleUnaryOperator	Returns: a unary operator that always returns its input argument identity() Returns a unary operator that always returns its input argument.

Method Detail

andThen back to summary

andThen	back to summary
public default DoubleUnaryOperator andThen(DoubleUnaryOperator after) Returns a composed operator that first applies this operator to its input, and then applies the `after` operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator. Parameters after:DoubleUnaryOperator the operator to apply after this operator is applied Returns:DoubleUnaryOperator a composed operator that first applies this operator and then applies the `after` operator Exceptions NullPointerException: if after is null See Also `compose(DoubleUnaryOperator)`

public default DoubleUnaryOperator andThen(DoubleUnaryOperator after)

Returns a composed operator that first applies this operator to its input, and then applies the after operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.

Parameters

after:DoubleUnaryOperator: the operator to apply after this operator is applied

Returns:DoubleUnaryOperator

a composed operator that first applies this operator and then applies the after operator

Exceptions

NullPointerException:: if after is null

See Also

compose(DoubleUnaryOperator)

applyAsDouble	back to summary
public double applyAsDouble(double operand) Applies this operator to the given operand. Parameters operand:double the operand Returns:double the operator result

applyAsDouble

back to summary

public double applyAsDouble(double operand)

Applies this operator to the given operand.

Parameters

operand:double: the operand

Returns:double

the operator result

compose back to summary

compose	back to summary
public default DoubleUnaryOperator compose(DoubleUnaryOperator before) Returns a composed operator that first applies the `before` operator to its input, and then applies this operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator. Parameters before:DoubleUnaryOperator the operator to apply before this operator is applied Returns:DoubleUnaryOperator a composed operator that first applies the `before` operator and then applies this operator Exceptions NullPointerException: if before is null See Also `andThen(DoubleUnaryOperator)`

public default DoubleUnaryOperator compose(DoubleUnaryOperator before)

Returns a composed operator that first applies the before operator to its input, and then applies this operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.

Parameters

before:DoubleUnaryOperator: the operator to apply before this operator is applied

Returns:DoubleUnaryOperator

a composed operator that first applies the before operator and then applies this operator

Exceptions

NullPointerException:: if before is null

See Also

andThen(DoubleUnaryOperator)

identity	back to summary
public static DoubleUnaryOperator identity() Returns a unary operator that always returns its input argument. Returns:DoubleUnaryOperator a unary operator that always returns its input argument

identity

back to summary

public static DoubleUnaryOperator identity()

Returns a unary operator that always returns its input argument.

Returns:DoubleUnaryOperator: a unary operator that always returns its input argument

public Interface DoubleUnaryOperator

Method Summary

Method Detail