| Method Summary |
|
| public synchronized void | addObserver(SerObserver o)
Adds an observer to the set of observers for this object, provided
that it is not the same as some observer already in the set. |
| protected synchronized void | clearChanged()
Indicates that this object has no longer changed, or that it has
already notified all of its observers of its most recent change,
so that the hasChanged method will now return false. |
| public synchronized int | countObservers()
Returns the number of observers of this Observable object. |
| public synchronized void | deleteObserver(SerObserver o)
Deletes an observer from the set of observers of this object. |
| public synchronized void | deleteObservers()
Clears the observer list so that this object no longer has any observers. |
| public synchronized boolean | hasChanged()
Tests if this object has changed. |
| public void | notifyObservers()
If this object has changed, as indicated by the
hasChanged method, then notify all of its observers
and then call the clearChanged method to
indicate that this object has no longer changed. |
| public void | notifyObservers(Object arg)
If this object has changed, as indicated by the
hasChanged method, then notify all of its observers
and then call the clearChanged method to indicate
that this object has no longer changed. |
| protected synchronized void | setChanged()
Marks this Observable object as having been changed; the
hasChanged method will now return true. |
