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

public class PI extends JApplet
{
	public void init()
	{
		float sum = 0, sign = 1;
		String s = new String();
		
		Container c = getContentPane();
		JTextArea jt = new JTextArea();
		JScrollPane jsp = new JScrollPane( jt );
		
		for(int i = 0; i < 1000; i++) {
			sum += sign * 4. / (2 * i + 1)	;
			sign *= -1;
			s += (i + 1) + ": " + sum + "\n";
		}

		jt.setText(s);
		// jt.setEditable(false);
		
		c.add(jsp);
	}
}