How to implement a bound property in your bean application? | Java Beans

To implement a bound property in the application, follow these steps:

•  Import the java.beans package. This gives you access to the PropertyChangeSupport class.
•  Instantiate a PropertyChangeSupport object. This object maintains the property change listener list and fires property change events. You can also make your class a PropertyChangeSupport subclass.
•  Implement methods to maintain the property change listener list. Since a PropertyChangeSupport subclass implements these methods, you merely wrap calls to the property-change support object's methods.
•  Modify a property's set method to fire a property change event when the property is changed.