paintComponents(g) instead of paintComponents(g)

[skiabox]

I am reading the excellent book 'Introduction to Java Programming' from Y.Daniel Liang and suddenly he is starting to use super.paintComponents(g) instead of super.paintComponent(g) inside the overriden paintComponent(Graphics g) method.The problem is that he is not explaining why he is doing that.
I've found another similar thread with this one but I did not get the difference by reading that thread.
Thank you.

[Fubarable]

You're saying that he has you call the super.paintComponents method in the book not super.paintComponent? Are you 100% sure?

[skiabox]

Yes in the chapter about JScrollPane he uses super.paintComponents(g).
In all previous chapters he was using super.paintComponent(g).

[camickr]

It's possible that he wants to do some custom painting AFTER all the child components have been painted.

For example, maybe you want to paint a selection rectangle around a group of components. I've done this in the past by overriding the paint() method, not the paintComponents() method, but the effect might be the same.

[skiabox]

I can provide the code of the example guys if you want.
Tell me if that could help.
Thank you for your answers.