import java.awt.*;
import java.awt.event.*;

class ValutaGUI9 {
  TextField argument = new TextField(10);
  TextField resultat = new TextField(30);
  Button b = new Button("Beregn");
  Frame f  = new ClosableFrame("Valutaomregning");

  class BeregnLytter implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      try {
	int eu = Integer.parseInt(argument.getText());
	resultat.setText(Double.toString(eu * 7.42));
      } catch (NumberFormatException exn) {
	resultat.setText("Fejl: skriv et heltal!");
      }
    }
  }

  public ValutaGUI9() {
    b.addActionListener(new BeregnLytter());
    resultat.setEditable(false);
    f.setLayout(new FlowLayout());
    f.add(new Label("Euro:")); f.add(argument); f.add(b); 
    f.add(new Label("Kroner:")); f.add(resultat);
    f.pack(); f.show();
  }

  public static void main(String args[]) 
  { new ValutaGUI9(); }
}