simple JTabbedPane question

[aulo aasmaa]

This should be simple:
I use a JTabbedPane in my application. On one tab I have everything correctly laid out (tables, lables, ...). The other
tab is currently empty.
I would now like to get a JPanel from a different application to this second tab.
This should be easy by importing necessary class files and then pointing to the JPanel.
Like this:

myTabbedPane.addTab("ABC", myPanel);

where "myPanel" is located in a different application in a different directory on my PC.
How to get it done?
I can also post the whole code here if necessary.
OK!
AUlo