io.vertx.core

## Interface Handler<E>

- All Known Subinterfaces:
    AsyncResultHandler<T>, AuthHandler, AuthHandler, BasicAuthHandler, BodyHandler, CookieHandler, CorsHandler, CSRFHandler, ErrorHandler, FaviconHandler, FormLoginHandler, HandlerReceiverAdaptor<T>, JWTAuthHandler, LoggerHandler, OAuth2AuthHandler, RecordParser, RedirectAuthHandler, ResponseTimeHandler, SessionHandler, SockJSHandler, SockJSTermHandler, StaticHandler, StompServerHandler, TemplateHandler, TimeoutHandler, UserSessionHandler, VirtualHostHandler
  All Known Implementing Classes:
    BasicAuthHandler, BodyHandler, BridgeInterceptor, CookieHandler, CorsHandler, CSRFHandler, DefaultAbortHandler, DefaultAckHandler, DefaultBeginHandler, DefaultCommitHandler, DefaultConnectHandler, DefaultNackHandler, DefaultSendHandler, DefaultSubscribeHandler, DefaultUnsubscribeHandler, ErrorHandler, FaviconHandler, FilteringInterceptor, FormLoginHandler, JWTAuthHandler, LoggerHandler, MailServiceVertxProxyHandler, OAuth2AuthHandler, ProxyHandler, ReadStreamAdapter, RecordParser, RedirectAuthHandler, ResponseTimeHandler, SessionHandler, SockJSHandler, SockJSTermHandler, StaticHandler, StompServerHandler, TemplateHandler, TimeoutHandler, UserSessionHandler, VirtualHostHandler, VoidHandler
  Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

      @FunctionalInterface
      public interface Handler<E>

  A generic event handler.

  This interface is used heavily throughout Vert.x as a handler for all types of asynchronous occurrences.

  Author:
    Tim Fox

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `handle(E event)` Something has happened, so handle it.

- - ### Method Detail

    - #### handle

          void handle(E event)

      Something has happened, so handle it.
      Parameters:
        `event` - the event to handle

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