import java.applet.*;
import java.awt.*;

// The Lesson4 illustrates defining your own class.
// It also shows the use of Layout Managers.

public class Lesson4 extends Applet
{
   public void init() 
   {
      setLayout(new BorderLayout());
      // create a MyPanel object and place on left side
      MyPanel p1 = new MyPanel();
      add("West", p1);
   }
}

class MyPanel extends Panel
{
    // Class Constructor is used when objects are first created
    MyPanel()
    {
	// Layout buttons in a grid with 4 rows and 1 column
	setLayout(new GridLayout(4,1));
	add(new Button("1"));
	add(new Button("2"));
	add(new Button("3"));
	add(new Button("4"));
    }
}