import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;

public class Ruut extends Applet implements ActionListener{
  int nr=100;
  TextField tf=new TextField("100");
  public Ruut(){
    add(tf);
    tf.addActionListener(this);
  }

  public void actionPerformed(ActionEvent e){
    nr=Integer.parseInt(tf.getText().trim());
    repaint();
  }
  public void paint(Graphics g){
    g.drawRect(10, 50, nr, nr);
  }
  
  public static void main(String argumendid[]){
    Frame f=new Frame("Ruudu joonistamine");
    f.setSize(300, 300);
    f.add(new Ruut());
    f.setVisible(true);
  }    

}