A JButton is a subclass of AbstractButton and it can be used for adding platform-independent buttons to a Java Swing application. A JButon can generate an ActionListener interface when the button is pressed or clicked, it can also generate the MouseListener and KeyListener interfaces. We can set a margin to a JButton by using the setMargin() method of JButton class and pass Insets(int top, int left, int bottom, int right) as an argument.
Example
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class JButtonMarginTest extends JFrame { private JButton button; public JButtonMarginTest() { setTitle("JButtonMargin Test"); setLayout(new BorderLayout()); button = new JButton("JButton Margin"); button.setMargin(new Insets(50, 50, 50, 50)); add(button, BorderLayout.NORTH); setSize(400, 400); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setVisible(true); } public static void main(String[] args) { new JButtonMarginTest(); } }