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

public class Testvraag7_10 extends JFrame implements ActionListener {

    private JButton button;
    private JTextField valuesTextField, resultTextField;
    

    public static void main(String[] args) {
        Testvraag7_10 demo = new Testvraag7_10();
        demo.setSize(200,150);
        demo.createGUI();
        demo.show();
    }

    private void createGUI() {
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container window = getContentPane();
        window.setLayout(new FlowLayout());

        valuesTextField = new JTextField(14);
        window.add(valuesTextField);
        
        button = new JButton("throw");
        window.add(button);
        button.addActionListener(this);

        resultTextField = new JTextField(12);
        window.add(resultTextField);

        
    }

    public void actionPerformed(ActionEvent event) {
        
        int leeftijd;

		//if ...       
       
       
    }
}