Observer (ETSI TS 102 267 Connection Oriented API for Java Card REL-17 17.0.0)

```
public interface Observer
```
Used by the notification mechanism: objects which are used to observe state changes have to implement this interface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`eventObserved(Event theEvent)`	This method is invoked by the observed object when a state change occurs.

- Method Detail
  - eventObserved
```
void eventObserved(Event theEvent)
```
    This method is invoked by the observed object when a state change occurs.
    
    Parameters:
    
    theEvent - the event which caused the state change.