IntToDoubleFunction (Java SE 25 & JDK 25)
Description: declaration: module: java.base, package: java.util.function, interface: IntToDoubleFunction
Keywords: java.util.function.IntToDoubleFunction interface

# Interface IntToDoubleFunction

Functional Interface:
  This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface public interface IntToDoubleFunction
Represents a function that accepts an int-valued argument and produces a double-valued result. This is the `int`-to-`double` primitive specialization for `Function`.

This is a functional interface whose functional method is `applyAsDouble(int)`.

Since:
  1.8
See Also:
  - `Function`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `double`
  `applyAsDouble(int value)`
  Applies this function to the given argument.

- ## Method Details

  - ### applyAsDouble

    double applyAsDouble(int value)
    Applies this function to the given argument.
    Parameters:
      `value` - the function argument
    Returns:
      the function result