Constrained Properties

Constrained Properties A Bean that has a constrained property generates an event when an attempt is made to change its value. The event is of type Property Change Event. It is sent to objects that, previously registered an interest in receiving such notifications....

Using Bound Properties

Using Bound Properties A Bean that has a bound property generates an event when the property is changed. The event is of type Property Change Event and is sent to objects that previously , registered an interest in receiving such notifications. The Tick Tock Bean is...

Compile the Source Code for the New Bean

Compile the Source Code for the New Bean Compile the source code to create a ‘class file, Type the following: Javac Colors, java . Create a Manifest File . You must now create a manifest file. First, switch to the c:\bdk\demo directory.  This is the directory in...

Developing a Simple Bean

Developing a Simple Bean This section presents an example that shows how to develop a simple, Bean and connect it to other components via the BDK.   Our new component is called the Colors Bean. It appears as either a rectangle or ellipse that is filled, with a color....

Indexed Properties

Indexed Properties An indexed property consists of multiple values. It can be identified by following design patterns. where N is,the’ name of the property and ‘I’ is its type: public T getN(int illde,.) public void setN(int index, T value); public...

Introspection

Introspection Introspection is the process of analyzing a Bean to determine its capabilities. This is an. essential feature of the Java Beans API, because it allows an application builder tool to present information about a component to a software designer: Without...