PropertyChangeListenerProxy

AI-generated Key Takeaways

• PropertyChangeListenerProxy extends EventListenerProxy and implements PropertyChangeListener to bind a listener to a specific property.

• It allows adding PropertyChangeListeners to beans that support property change events.

• getPropertyName() retrieves the name of the associated property, and propertyChange() forwards the event to the delegate listener.

• Beans with getPropertyChangeListeners() may return an array containing both PropertyChangeListener and PropertyChangeListenerProxy objects.

public class PropertyChangeListenerProxy extends EventListenerProxy<PropertyChangeListener>
implements PropertyChangeListener

A class which extends the EventListenerProxy specifically for adding a PropertyChangeListener with a "bound" property. Instances of this class can be added as PropertyChangeListeners to a bean which supports firing property change events.

If the object has a getPropertyChangeListeners method then the array returned could be a mixture of PropertyChangeListener and PropertyChangeListenerProxy objects.

See Also

• EventListenerProxy
• PropertyChangeSupport.getPropertyChangeListeners()

Public Constructor Summary

PropertyChangeListenerProxy(String propertyName, PropertyChangeListener listener) Constructor which binds the PropertyChangeListener to a specific property.

Public Method Summary

String	getPropertyName() Returns the name of the named property associated with the listener.
void	propertyChange(PropertyChangeEvent event) Forwards the property change event to the listener delegate.

Inherited Method Summary

From class java.util.EventListenerProxy

T	getListener() Returns the listener associated with the proxy.

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

From interface java.beans.PropertyChangeListener

abstract void

propertyChange(PropertyChangeEvent evt) This method gets called when a bound property is changed.

Public Constructors

public PropertyChangeListenerProxy (String propertyName, PropertyChangeListener listener)

Constructor which binds the PropertyChangeListener to a specific property.

Parameters

propertyName	the name of the property to listen on
listener	the listener object

Public Methods

public String getPropertyName ()

Returns the name of the named property associated with the listener.

Returns

• the name of the named property associated with the listener

public void propertyChange (PropertyChangeEvent event)

Forwards the property change event to the listener delegate.

Parameters

event	the property change event