| Interface | Description | 
|---|---|
| Handler | The  javax.xml.rpc.handler.Handlerinterface is 
  required to be implemented by a SOAP message handler. | 
| HandlerChain | The  javax.xml.rpc.handler.HandlerChainrepresents
  a list of handlers. | 
| HandlerRegistry | The  javax.xml.rpc.handler.HandlerRegistryprovides support for the programmatic configuration of 
  handlers in aHandlerRegistry. | 
| MessageContext | The interface  MessageContextabstracts the message
  context that is processed by a handler in thehandlemethod. | 
| Class | Description | 
|---|---|
| GenericHandler | The  javax.xml.rpc.handler.GenericHandlerclass
  implements theHandlerinterface. | 
| HandlerInfo | The  javax.xml.rpc.handler.HandlerInforepresents
  information about a handler in the HandlerChain. |