!629 // standard function adder

!592 // auto-import

!614 // actionListener {

!619 // standard classes (LetterLayout, CenteredLine)

import java.awt.*;

import java.util.List;

public class main {

  public static void main(String[] args) {

    JFrame frame = new JFrame("A JavaX Frame");

    JPanel panel = new JPanel(new GridLayout(2, 1));

    final JTextArea textArea = new JTextArea();

    panel.add(new JScrollPane(textArea));

    JButton btnBla = new JButton("Bla");

    panel.add(new CenteredLine(btnBla));

    frame.add(panel);

    frame.setBounds(100, 100, 500, 400);

    frame.setVisible(true);

    exitOnFrameClose(frame);

  }

}