How many characters are in the empty string?

Are there any disadvantages to prototyping? If so, what are they?

What will be an ideal response?

Which of the following statements are correct?

a. Every subclass of Node has a no-arg constructor. b. Circle is a subclass of Node. c. Button is a subclass of Node. d. Pane is a subclass of Node. e. Scene is a subclass on Node.