"Adding Tab Panels to jTabbedPane using Netbeans"

I am so lucky that I found the solution to the questions stated in the title so quickly!

Thanks to the original blogger:

http://dotnettojava.blogspot.com/2008/07/adding-tab-panels-to-jtabbedpane-using.html

To easily access to it I pasted here, thank you Dot Net To Java:

Adding panels to a tabbed pane was not straight forward until I found the correct procedure. To add panels, select a jpanel from the palette and pull it over to the tabbed pane window. After the first pane, you must place the panel you have grabbed with your mouse over the tabs at the top. Move the panel around until an orange box appears on the tabbed pane. Then you can release the mouse button and the panel will be added as a new tabbed pane panel. If you don't get the orange box, then when you drop the panel, it will become a sub panel on the tabbed pane panel that is currently active. This is not what you want if you are trying to add an additional panel to the tabbed pane. 
Posted by DotNetToJava at 4:04 PM