swing Layout management Border layout
Example
import static java.awt.BorderLayout.*;
import javax.swing.*;
import java.awt.BorderLayout;
JPanel root = new JPanel(new BorderLayout());
root.add(new JButton("East"), EAST);
root.add(new JButton("West"), WEST);
root.add(new JButton("North"), NORTH);
root.add(new JButton("South"), SOUTH);
root.add(new JButton("Center"), CENTER);
JFrame frame = new JFrame();
frame.setContentPane(root);
frame.pack();
frame.setVisible(true);
Border layout is one of the simplest layout managers. The way to use a layout manager is to set the manager of a JPanel.
Border Layout slots follow the following rules:
- North & South: preferred height
- East & West: preferred width
- Center: maximum remaining space
In BorderLayout slots can also be empty. The layout manager will automatically compensate for any empty spaces, resizing when needed.
Here is what this example looks like:
