How to add a JButton into the center of a JFrame with BorderLayout()? I tried using BorderLayout.CENTER, but instead of the center
BorderLayout()
BorderLayout.CENTER
Put a JPanel in the CENTER and set the layout to GridBagLayout or BoxLayout as seen in this answer to Set component at center of the page.
JPanel
CENTER
GridBagLayout
BoxLayout
The GridBagLayout is used to center a label containing the yellow/red gradient image seen in the Nested Layout Example.