Use SwingPropertyChangeSupport to Dynamically Update JTextArea

In this code, SwingPropertyChangeSupport is utilized to trigger updates in a JTextArea whenever the underlying data model, represented by the ArrayForUpdating class, changes. This allows for dynamic updating of the GUI in response to changes in the data model.

The ArrayForUpdating class is responsible for maintaining an array of integers. It exposes a SwingPropertyChangeSupport instance, allowing listeners to register for property change events. Whenever the array is modified, the ArrayForUpdating class fires a property change event, notifying registered listeners.

In the GuiForUpdate class, an instance of ArrayForUpdating is created and registered as a property change listener. When the array is modified, the listener is invoked, and the modified value is retrieved. This value is then displayed in the JTextArea (displayOutput) within the GUI.

The processInput method in GuiForUpdate is responsible for modifying the array. It collects the entered value and index from the user and updates the array accordingly.

The ActionListener implementation for the changeArrayButton handles the button click event. It opens a dialog to allow user input, processes the input, and triggers the modification of the array. The displayOutput text area is then updated with the modified array values.

In summary, SwingPropertyChangeSupport provides a mechanism for propagating changes in data models to the GUI components that rely on them, ensuring that the GUI remains in sync with the underlying data.