Multithread with CompletableFuture

• With Java 8 a new feature is available to help developers to code in asynchronus way.

• From the package java.util.concurrent are now available the class CompletableFuture<T> that implements both interfaces Future<T> and CompletionStage<T>

• A Future represent the pending result of an asynchronus operation and CompletationStage is a Promise.

• Promise that the computation will be done in the future

Simple example

public class Foo{
  //...
  public string doSomething(){ return "hey!"}

  public void startFoo(){
    CompletableFuture<String> result = CompletableFuture.supplyAsync(this::doSomething);
  }

}