Interface Handler

vertx-core/src/main/java/io/vertx/core/Handler.java:22–31

A generic event handler. This interface is used heavily throughout Vert.x as a handler for all types of asynchronous occurrences. @author Tim Fox

 *  @author <a href="http://tfox.org">Tim Fox</a>
 */
@FunctionalInterface
public interface Handler<E> {

  /**
   * Something has happened, so handle it.
   *
   * @param event  the event to handle
   */
  void handle(E event);
}