What does this mean? and how to I get the propertyChange event

what does this mean?
"This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event."
how would i impliment this to find when the value changes?

Assign event listener to the target class having this property to that event type PropertyChangeEvent.PROPERTY_CHANGE
and you'll have it handled post factum. It's better to use setter&getter approach to handle value changes for particular property.

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What does this mean? and how to I get the propertyChange event

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