Example5.java

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

public class Example5 {
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        CompletableFuture<String> completableFuture = fetchData(20);
        //No bloqueo
        completableFuture.thenAccept(value -> {
            System.out.println(value);
        });
        synchronousTask2();
        synchronousTask1();
    }

    public static CompletableFuture<String> fetchData(Integer id){
        return CompletableFuture.supplyAsync(() -> {
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {}
            return "Datos obtenido del id: "+id;
        });
    }



    public static void synchronousTask1() throws InterruptedException {
        System.out.println("Obtuve datos");
        Thread.sleep(10000);
        System.out.println("Finalice obtener datos");
    }

    public static void synchronousTask2(){
        System.out.println("Calcular IVA");
    }
}