So hier mal ein kleines Applet zur Berechnung von Fakultät:

[code:1]
import javax.swing.JPanel;
import javax.swing.JApplet;
import javax.swing.JButton;
import java.awt.Rectangle;
import javax.swing.JTextField;

public class Faku extends JApplet
{

/**
*
*/
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;
private JTextField jTextField = null;
/**
* This is the xxx default constructor
*/
public Faku()
{
super();
}

/**
* This method initializes this
*
* @return void
*/
public void init()
{
this.setSize(300, 200);
this.setContentPane(getJContentPane());
}

public void start(){};

/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane()
{
if (jContentPane == null)
{
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.add(getJButton(), null);
jContentPane.add(getJTextField(), null);
}
return jContentPane;
}

/**
* This method initializes jButton
*
* @return javax.swing.JButton
*/
private JButton getJButton()
{
if (jButton == null)
{
jButton = new JButton();
jButton.setBounds(new Rectangle(199, 145, 92, 32));
jButton.setText("Fakultät");
jButton.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent e)
{
long n = Long.parseLong(jTextField.getText() );
doFak(n);
jTextField.setText(String.valueOf(doFak(n)));

}
});
}
return jButton;
}

long doFak(long n)
{
if (n == 0) return 1;
else return n * doFak(n-1);
}

/**
* This method initializes jTextField
*
* @return javax.swing.JTextField
*/
private JTextField getJTextField()
{
if (jTextField == null)
{
jTextField = new JTextField();
jTextField.setBounds(new Rectangle(50, 55, 92, 23));
}
return jTextField;
}

}


[/code:1]

Das ganze gibt es wie immer auf meiner Seite zu sehen :wink: