Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/java/java-8-inttodoublefunction-interface-in-java-with-examples/ below:

Java 8 | IntToDoubleFunction Interface in Java with Examples

Last Updated : 11 Jul, 2025

The

is a part of the

package which has been introduced since Java 8, to implement

in Java. It represents a function which takes in an int-valued argument and gives a double-valued result. The lambda expression assigned to an object of IntToDoubleFunction type is used to define its

which eventually applies the given operation on its only argument. It is similar to using an object of type Function<Integer, Double> . The IntToDoubleFunction interface has only one function:

: This method accepts an int-valued argument and gives a double-valued result.

double applyAsDouble(int value)

This method takes in one parameter

which is the int-valued argument

This method returns a

result. Below is the code to illustrate applyAsDouble() method:

// Java Program to demonstrate
// IntToDoubleFunction's applyAsDouble() method

import java.util.function.IntToDoubleFunction;

public class Main {
    public static void main(String args[])
    {

        // Declare IntToDoubleFunction
        IntToDoubleFunction func = a -> 3.12 * a;

        // Apply the function to get the result as double
        // using applyAsDouble()
        System.out.println(func.applyAsDouble(2));
    }
}

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4