Callback

```
public interface Callback
```
Java callback interface This interface must be implemented at the application side by a class that should receive the callback(s).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`getEvent(long lRet, long ulState, java.lang.Object callbackData)`	Get a callback event.

- Method Detail
  - getEvent
```
void getEvent(long lRet,
              long ulState,
              java.lang.Object callbackData)
```
    Get a callback event. This method is the callback from the Java SDK to the application. A class at the application side must implement this method to receive the callbacks from the Java interface. This callback method will give the dataobject back that was set by the PTEID_ReaderContext.SetEventCallback(...) method.
    
    Parameters:
    
    lRet - : internal use only
    
    ulState - : internal use only
    
    callbackData - : the callback data object as passed by the function SetEventCallback