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Time to do some reading in the Tutorial about how to build GUI.
Your code has panels, layout managers and components in it already.
What you need to do is more of the same for the other tabs.

You need to design a GUI with text fields where a customer can put in the data.
Use a JPanel to hold the components.
Design how the components are to be positioned in the panel and the chose a...

Take them one at a time:

Can you describe what is the problem here?

What are your questions or problems?

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