Flow API (java.util.concurrent.Flow) wurde in Java 9 eingeführt. Es hilft zu verstehen, wie die Schnittstellen Publisher und SSubscriber interagieren, um die gewünschten Aktionen auszuführen.
Flow API besteht aus Herausgeber-, Abonnenten-, Abonnement- und Prozessor-Schnittstellen, die auf reaktiven Flussspezifikationen basieren können. Im folgenden Beispiel können wir die Flow-API mithilfe der Publisher-Subscriber-Schnittstelle implementieren.
Beispiel
import java.util.concurrent.Flow.Publisher; import java.util.concurrent.Flow.Subscriber; import java.util.concurrent.Flow.Subscription; public class FlowAPITest { public static void main(String args[]) { <strong>Publisher<Integer></strong> publisherSync = new <strong>Publisher<Integer></strong>() { <strong>// Create publisher</strong> <strong>@Override</strong> public void <strong>subscribe</strong>(Subscriber<? super Integer><!--? super Integer--> subscriber) { for(int i = 0; i < 10; i++) { System.out.println(Thread.currentThread().getName() + " | Publishing = " + i); subscriber.<strong>onNext</strong>(i); } subscriber.<strong>onComplete</strong>(); } }; <strong>Subscriber<Integer></strong> subscriberSync = new <strong>Subscriber<Integer></strong>() { <strong>// Create subscriber</strong> <strong>@Override</strong> public void <strong>onSubscribe</strong>(Subscription subscription) { } <strong>@Override</strong> public void <strong>onNext</strong>(Integer item) { System.out.println(Thread.currentThread().getName() + " | Received = " + item); try { Thread.sleep(100); } catch(InterruptedException e) { e.printStackTrace(); } } <strong>@Override</strong> public void <strong>onError</strong>(Throwable throwable) { } <strong>@Override</strong> public void <strong>onComplete()</strong> { } }; publisherSync.<strong>subscribe</strong>(subscriberSync); } }
<strong>main | Publishing = 0 main | Received = 0 main | Publishing = 1 main | Received = 1 main | Publishing = 2 main | Received = 2 main | Publishing = 3 main | Received = 3 main | Publishing = 4 main | Received = 4 main | Publishing = 5 main | Received = 5 main | Publishing = 6 main | Received = 6 main | Publishing = 7 main | Received = 7 main | Publishing = 8 main | Received = 8 main | Publishing = 9 main | Received = 9</strong>
Das obige ist der detaillierte Inhalt vonWie können wir die Flow-API mithilfe des Publish-Subscribe-Musters in Java 9 implementieren?. Für weitere Informationen folgen Sie bitte anderen verwandten Artikeln auf der PHP chinesischen Website!