| 程序包 | 说明 | 
|---|---|
| io.netty.channel | The core channel API which is asynchronous and event-driven abstraction of
 various transports such as a
 NIO Channel. | 
| io.netty.channel.nio | NIO-based channel
 API implementation - recommended for a large number of connections (>= 1000). | 
| io.netty.util.concurrent | Utility classes for concurrent / async tasks. | 
| 限定符和类型 | 类和说明 | 
|---|---|
| class  | SingleThreadEventLoopAbstract base class for  EventLoop's that execute all its submitted tasks in a single thread. | 
| class  | ThreadPerChannelEventLoopSingleThreadEventLoopwhich is used to handle OIOChannel's. | 
| 限定符和类型 | 类和说明 | 
|---|---|
| class  | NioEventLoopSingleThreadEventLoopimplementation which register theChannel's to aSelectorand so does the multi-plexing of these in the event loop. | 
| 限定符和类型 | 方法和说明 | 
|---|---|
| void | RejectedExecutionHandler. rejected(java.lang.Runnable task,
        SingleThreadEventExecutor executor)Called when someone tried to add a task to  SingleThreadEventExecutorbut this failed due capacity
 restrictions. |