JPanel size by inner components

Question

Is it possible to tell JPanel to set its size to fit all components that it contains? Something like pack() for JFrame.

edit: The trick with preferredSize d

Answer 1

Here's an example of a panel which:

• Resizes with it's parent.
• Sets the width to the width of the parent.
• Sets the height according to sum of the height of all of it's children.

JPanel panel = JPanel(new GridBagLayout())

panel.setMaximumSize(new Dimension(panel.getMaximumSize().width, panel.getPreferredSize().height))

panel.validate()
panel.repaint()