package com.coreJava;

import java.util.List;

import java.util.Optional;

public final class App {

private App() {

}

public static void main(String[] args) {

System.out.println(" Hello World!!!!!!! ");

App a = new App();

a.summer(1, 20);

}

void summer(long a, int b) {

System.out.println("Int ");

}

// void sum ( int a , long b ){ System.out.println("Long ");} // Ambigous error

}

/*

* Reduce Null As much as you can

*

* }

*

* for returning Simple String/Integer ; use Optional

* eg

*/

class SampleClass {

/* Reduce Null As much as you can */

public List<String> returnSampleList() {

return List.of(); // use This , instead of return null ;

}

/* For String/Integer */

public String returnSampleString() {

return null;

}

// instead use

public Optional<String> returnStrng() {

return Optional.empty();

}

}