How to set the size and position of JFrame

hey all,
i have a frame and i devide the frame into three panels, i want to make the top panel the lergest and make it square. and the rest two panels in small and in the bottom of the frame.
could you please help me to set the size and position of the jpanel
Thanks

If u want the bottom 2 panels to be on the same level, u can try setting ur content pane to use the BorderLayout and the adding the 3 panels to it with BorderLayout.NORTH(for the TOP panel), BorderLayout.EAST(RIGHT panel) and BorderLayout.WEST(for LEFT panel).
Don't know if this is what ur looking for, maybe u could describe more on ur layout with a sample image or something?

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