Java: GridLayout add to specific cell

how to add data to specific cell for example ([*] indicates a cell): [JButton1] [JButton2] [] [] [JButton3]

Or is there any better solution rather than using null layout to get similar result - 开发者_开发百科giving a gap.

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GridLayout of JPanels each with a CardLayout. When you want something to appear in a particular x,y position, add it to the JPanel and show that card.