Etwas

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

class LetsSwing
{
	static final String[] farben = {
		"Black", "Blue", "Cyan", "Green", "Magenta", 
		"Orange", "Red", "White", "Yellow"
	};

	public static void main(String[] args)
	{
		JFrame frame = new JFrame("Let's Swing...");

		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
		JPanel panel = new JPanel(new BorderLayout());
		frame.getContentPane().add(panel);

		final JList list = new JList(farben);
		list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

		list.addListSelectionListener(new ListSelectionListener() {
			public void valueChanged(ListSelectionEvent l) {
				if(list.getSelectedIndex()==2){
					System.out.println("muhhhaa");
				}
			}
		});

		panel.add(new JScrollPane(list), BorderLayout.NORTH);

		

		JButton button = new JButton("Reset");
		panel.add(button, BorderLayout.SOUTH);

		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				list.setSelectedIndex(0);
			}
		});

		frame.pack();
		frame.setVisible(true);
	}
}