import java.awt.Container;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.border.TitledBorder;
public class MainClass {
public static void main(final String args[]) {
JFrame frame = new JFrame("Justified Titled Borders");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
TitledBorder centerBorder = BorderFactory.createTitledBorder("Center");
centerBorder.setTitleJustification(TitledBorder.CENTER);
JButton centerButton = new JButton();
centerButton.setBorder(centerBorder);
Container contentPane = frame.getContentPane();
contentPane.add(centerButton);
frame.setSize(300, 200);
frame.setVisible(true);
}
}