DoubleUnaryOperator identity example

Description

DoubleUnaryOperator identity returns a unary operator that always returns its input argument.

Syntax

identity has the following syntax.


static DoubleUnaryOperator identity()

Example

The following example shows how to use identity.


import java.util.function.DoubleUnaryOperator;
// w  w w  . java2 s.  c  o  m
public class Main {

  public static void main(String[] args) {
    DoubleUnaryOperator id = DoubleUnaryOperator.identity();
    
   
    System.out.println(id.applyAsDouble(3.14));
  }
}

The code above generates the following result.