Set flow from center for FlowLayout in Java

import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
/*from   ww w  .  ja  v a2  s.co m*/
public class Main {
  public static void main(String[] args) {
    int align = FlowLayout.CENTER; // or LEFT, RIGHT
    JPanel panel = new JPanel(new FlowLayout(align));
    JTextArea area = new JTextArea("text area");
    area.setPreferredSize(new Dimension(100, 100));

    JButton button = new JButton("button");
    panel.add(button);


    panel.add(new JScrollPane(area));

    JFrame f = new JFrame();
    f.add(panel);
    f.pack();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  }
}