package com.javatechie.lambda.demo;

interface Calculator {

// void switchOn();

/* void sum(int input); */

int substract(int i1, int i2);

}

public class CalculatorImpl {

public static void main(String[] args) {

/*

* Calculator calculator = () -> System.out.println("Switch On");

*

* calculator.switchOn();

*/

/*

* Calculator calculator = (input) -> System.out.println("Sum : " + input);

* calculator.sum(394);

*/

Calculator calculator = (i1, i2) -> {

if (i2 < i1) {

throw new RuntimeException("message");

} else {

return i2 - i1;

}

};

System.out.println(calculator.substract(8, 20));

}

// () -> {body};

}