How to use Swing in JME3

Troubleshooting gui
1

As you know in JME2, there is JMEDesktop class make us can use Swing components in JME2.

However, I cannot find the relevant classes in JME3 to let us can use Swing components in JME3.

Could anybody give me some advices?

Thanks in advance!

2

Its not possible to use Swing components inside the render view.