Commit ac04004

The `get` method blocks the `main` thread until the asynchronous task

finishes (i.e., until the 3-second sleep ends).

The execution flow is:

package com.zetcode;

import java.util.concurrent.CompletableFuture;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.TimeUnit;

public class RunBlocking {

public static void main(String[] args)

throws ExecutionException, InterruptedException {

System.out.println("Program started");

CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {

// Simulate a long-running job

try {

TimeUnit.SECONDS.sleep(3);

} catch (InterruptedException e) {

throw new IllegalStateException(e);

}

System.out.printf("Task run in: %s %n",

Thread.currentThread().getName());

});

future.whenComplete(

(aVoid, throwable) -> System.out.println("completed"));

future.get();

System.out.println("Program finished");

}

}