Observable
public
abstract
class
Observable
extends Object
 Known Direct Subclasses
|
Provides methods for registering or unregistering arbitrary observers in an ArrayList.
This abstract class is intended to be subclassed and specialized to maintain
a registry of observers of specific types and dispatch notifications to them.
Summary
Inherited methods |
|---|
From
class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
|
boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long millis, int nanos)
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.
|
final
void
|
wait(long millis)
Causes the current thread to wait until either another thread invokes the
notify() method or the
notifyAll() method for this object, or a
specified amount of time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object.
|
|
Fields
mObservers
ArrayList<T> mObservers
The list of observers. An observer can be in the list at most
once and will never be null.
Public constructors
Public methods
registerObserver
void registerObserver (T observer)
Adds an observer to the list. The observer cannot be null and it must not already
be registered.
| Parameters |
|---|
observer |
T:
the observer to register |
unregisterAll
void unregisterAll ()
Remove all registered observers.
unregisterObserver
void unregisterObserver (T observer)
Removes a previously registered observer. The observer must not be null and it
must already have been registered.
| Parameters |
|---|
observer |
T:
the observer to unregister |
Developers