Z21Listener (JMRI API)

All Superinterfaces:

AbstractMRListener, java.util.EventListener

All Known Implementing Classes:

Z21CanReporter, Z21CanSensor, Z21ConfigFrame, Z21HeartBeat, Z21LocoNetTunnel, Z21MonPane, Z21Reporter, Z21ReporterManager, Z21RMBusSensor, Z21SensorManager, Z21XPressNetTunnel
```
public interface Z21Listener
extends AbstractMRListener
```
Interface for Z21 protocol Listeners

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`message(Z21Message msg)`	Member function that will be invoked by a z21Interface implementation to forward a z21 message sent to the layout.
`void`	`reply(Z21Reply msg)`	Member function that will be invoked by a z21Interface implementation to forward a z21 message from the layout.

- Method Detail
  - reply
```
void reply(Z21Reply msg)
```
    Member function that will be invoked by a z21Interface implementation to forward a z21 message from the layout.
    
    Parameters:
    
    msg - The received z21 reply. Note that this same object may be presented to multiple users. It should not be modified here.
  - message
```
void message(Z21Message msg)
```
    Member function that will be invoked by a z21Interface implementation to forward a z21 message sent to the layout. Normally, this function will do nothing.
    
    Parameters:
    
    msg - The received z21 message. Note that this same object may be presented to multiple users. It should not be modified here.