Question $1$

You have been provided with a Java Swing application in folder Question $1.$ Your task is to make the following modifications:

$-$ Add a JButton labeled "Greet" next to the "Subait" button. When clicked, this button should display a message dialog saying "Welcome!".

$-$ Add a JSpinner below the existing text field labeled "Age:", configured to accept integer values only.

$-$ Change the layout manager of the mainPanel to BorderLayout, placing the centerPanel in the center and the bottompanel in the south.

$-$ Add a Jabel below the "Age: $"$ spinner that will dynamically display the age entered as "You are x years old." as the user interacts with the spinner.