import static javax.swing.JOptionPane.*; 
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class BilHyra extends JFrame implements ActionListener { 
    JTextField input = new JTextField();

    public BilHyra() {
        setLayout(new GridLayout(1,2));
        JLabel inputLbl = new JLabel("Ange antal dagar, pris per dag samt bilmodell");
        add(inputLbl);
        add(input);
        input.addActionListener(this);
        pack();
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public void actionPerformed(ActionEvent e) {
		Scanner sc = new Scanner(input.getText());
		int antalDagar  = sc.nextInt(); 
		double dagsPris = sc.nextDouble();
		String bil = sc.next();
		double totPris = dagsPris * antalDagar;
		String s = String.format("Totalt pris för %s: %.2f", bil, totPris);
		showMessageDialog(null, s);        
    }

	 public static void main (String[] arg) {
        new BilHyra();
	} 
}