# Package org.vertx.java.core

Interface Summary
Interface | Description
--- | ---
AsyncResultHandler<T> | Handler for `AsyncResult`
Handler<E> | A generic event handler
VertxFactory |

Class Summary
Class | Description
--- | ---
AsyncResult<T> | Represents a result that is returned asynchronously from an operation.
SimpleHandler | This class can be used for simple handlers which don't receive any value.
Vertx | The control centre of vert.x