Layout example

import java.awt.*;
import javax.swing.*;

public class Example2 {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {

            JLabel label = new JLabel("Click the button!");

            JPanel labelPanel = new JPanel();
            labelPanel.add(label);

            JButton bt = new JButton("Click me");
            bt.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 64));

            JPanel centerPanel = new JPanel();
            int eb = 20;
            centerPanel.setBorder(BorderFactory.createEmptyBorder(eb, eb, eb, eb));
            centerPanel.add(bt);


            JPanel mainPanel = new JPanel(new BorderLayout());
            mainPanel.add(labelPanel, BorderLayout.PAGE_START);
            mainPanel.add(centerPanel, BorderLayout.CENTER);

            JFrame frame = new JFrame("GUI");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.add(mainPanel);
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        });
    }


}