//Ojari Kodutöö:
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class t66 extends Applet implements ActionListener{
  double s,a,h;
  int n, kp;
  TextField nurgad = new TextField();
  TextField kpikkus = new TextField();
  Button nupp = new Button("Pindala:");
  TextField vastus = new TextField();
  Label lnurgad = new Label("Nurkade arv:");
  Label lkpikkus = new Label("Külje pikkus:");
  Nurgad nr1 = new Nurgad(7); 
  public void init(){
     Panel p=new Panel();
	  p.setLayout(new java.awt.GridLayout(3,2));
	  p.add(lnurgad);
	  p.add(nurgad);
	  p.add(lkpikkus);
	  p.add(kpikkus);
	  p.add(nupp);
	  p.add(vastus);
	  setLayout(new BorderLayout());
	  add(p, BorderLayout.NORTH);
//	  add(new Label("Hulknurk"));
	  add(nr1, BorderLayout.CENTER);

	  nupp.addActionListener(this);
 
  }

  public void paint(Graphics g){

  }

  public void actionPerformed(ActionEvent e){
    n = Integer.parseInt(nurgad.getText());
    kp = Integer.parseInt(kpikkus.getText());
    double h=((Math.sqrt(3.0)/2.0*kp));
    double s=((kp*h)/2)*n;
    String abi=s+"";
    
    vastus.setText(abi.substring(0, 5));
    nr1.muudaNurkadeArv(n);
      }

}