StateListener

All Known Subinterfaces:

MessageListener, Receiver

All Known Implementing Classes:

Chat, Draw, MyReceiver, QuoteServer, ReceiverAdapter, RELAY.Receiver, RelayDemo, RelayDemoRpc, Relayer.Bridge, ReplicatedHashMap, ReplicatedTree, ViewDemo
```
public interface StateListener
```
Interface to provide state (state provider) and set state (state requester)

Since:

4.0

Author:

Bela Ban, Vladimir Blagojevic

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`getState(java.io.OutputStream output)`	Allows an application to write a state through a provided OutputStream.
`default void`	`setState(java.io.InputStream input)`	Allows an application to read a state through a provided InputStream.

- Method Detail
  - getState
```
default void getState(java.io.OutputStream output)
               throws java.lang.Exception
```
    Allows an application to write a state through a provided OutputStream. After the state has been written the OutputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.
    
    Parameters:
    
    output - the OutputStream
    
    Throws:
    
    java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can re-throw them and let the caller know what happened
    
    See Also:
    
    OutputStream.close()
  - setState
```
default void setState(java.io.InputStream input)
               throws java.lang.Exception
```
    Allows an application to read a state through a provided InputStream. After the state has been read the InputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.
    
    Parameters:
    
    input - the InputStream
    
    Throws:
    
    java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can catch them and thus know what happened
    
    See Also:
    
    InputStream.close()