How to have Collapsable/Expandable JPanel in Java Swing

Question

I want a JPanel that can be Collapsed or Expanded when user clicks on a text/icon on its border. I need this type of panel due to space crunch in my application.

I read

Answer 1

not sure where you looked, but it's not that difficult to find - even given the infrastructure mess we are in ;-)

Go to the project home of SwingX, then follow the link in the first paragraph to the (barebone) download section, down to releases\1.6.2. Nothing special to the collapsibles themselves, just containers to put components into.