1 package com.example.lambda;
 2 
 3 import java.util.function.DoubleFunction;
 4 
 5 public class A06DoubleFunction {
 6 
 7   public static void main(String[] args) {
 8         
 9     A06DoubleFunction test = new A06DoubleFunction();
10         
11     DoubleFunction<String> calc = 
12           t -> String.valueOf(t * 3);
13         
14     String result = calc.apply(20);
15     System.out.println("New value is: " + result);        
16   }      
17 }
18