Not able to add 3 JPanels to a main panel

Question

I have 3 JPanels and I want to place them all in one JPanel. I used the GridBagLayout for the main panel. But only one panel is getting added. Why might this be?

Answer 1

I am not sure but I think you need to add a GridBagConstraints to your GridBagLayout. Try look at this site to get the idea on how to work with GridBagLayout: link

Or maybe just use another Layout for your JFrame, maybe BorderLayout or GridLayout to arrange your Panels correctly