Package java.util

Interface Observer

public interface Observer

Observer is the interface to be implemented by objects that receive notification of updates on an Observable object.

See Also:

Observable

Method Summary

Modifier and Type	Method	Description
void	update(Observable observable, Object data)	This method is called if the specified Observable object's notifyObservers method is called (because the Observable object has been updated.

Method Details

update

void update(Observable observable, Object data)

This method is called if the specified Observable object's notifyObservers method is called (because the Observable object has been updated.

Parameters:

observable - the Observable object.

data - the data passed to Observable.notifyObservers(Object).