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

public class SampleLayout
{
  private JFrame f;
  private JButton[] b;

  public SampleLayout()
  {
    f = new JFrame("Sample Layout");
    String[] loc = {"North","South","East","West","Center"};
    b = new JButton[5];
    for(int i = 0; i<b.length; i++)
    {
      b[i] = new JButton(loc[i]);
    }
  }

  public void launch()
  {
    f.setLayout(new BorderLayout());
    f.add(b[0],BorderLayout.NORTH);
    f.add(b[1],BorderLayout.SOUTH);
    f.add(b[2],BorderLayout.EAST);
    f.add(b[3],BorderLayout.WEST);
    f.add(b[4],BorderLayout.CENTER);
	f.setVisible(true);
	f.setBounds(10,10,500,500);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}