import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Esim17 extends Applet implements ActionListener {
   TextField valittu;
   Button tutki;
   Checkbox a,b,c;
   public void init () {
     add(a = new Checkbox("valinta 1"));
     add(b = new Checkbox("valinta 2"));
     add(c = new Checkbox("valinta 3"));
     b.setState(true);
     c.setState(true);
     add(valittu = new TextField(30));
     add(tutki = new Button("Tutki valitut"));
     tutki.addActionListener(this);
   }
   public void actionPerformed(ActionEvent e) {
     if (e.getActionCommand().equals("Tutki valitut"));
     {
        if (a.getState()==true) valittu.setText("valinta 1  ");
        if (b.getState()==true) valittu.setText(valittu.getText()+"valinta 2  ");
        if (c.getState()==true) valittu.setText(valittu.getText()+"valinta 3");
     }
   }
}