Adding panel in center of container

问题

I have a JPanel which is a BorderLayout and I have set a new panel in the top and container (JDesktopPane) in center and another panel in bottom. Now I want to set panel (card layout) dynamically in center of container as I am showing hierarchy below

           top --> panel
panel(BorderLayout)center --> container(JDesktopPane) --> panel(CardLayout)
            bottom --> panel

Here card layout contain different panel as card. problem is that I'm unable to show each card in center of container.

回答1:

how to show them center of container?

Put them in a panel with a GridBagLayout, add them as the only component with no constraint, and they will be centered. See this answer for an example.

回答2:

- GroupLayout provides a hassle free way arranging the components as you want them too.

- GroupLayout was developed by NetBeans Group in 2005.

- You can download the Windows Builder Pro for free from Google, and use it.

来源：https://stackoverflow.com/questions/12768592/adding-panel-in-center-of-container