What Extends JComponent?
By Geertjan-Oracle on Mar 29, 2012
Let NetBeans IDE tell you what extends JComponent:
Thanks to Damian from Gdansk in Poland who left a comment in this blog yesterday that explains how to achieve the above: "Let's say you would like to find all implementations of TreeModel interface. I found today an answer: r-click on class/interface -> chose Navigate->Inspect Hierarchy->select second filter at the bottom of opened window or press Alt+Shift+F12 and then Alt+B."
In the list above, double-click an item to open it in the NetBeans Java editor.
Handy tip, dziękuję bardzo, Damian.