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

class TerminationListener implements WindowListener {
    public void windowActivated(WindowEvent e) {}
    public void windowClosed(WindowEvent e) {}
    public void windowClosing(WindowEvent e) {
        System.exit(0) ;
    }
    public void windowDeactivated(WindowEvent e) {}
    public void windowDeiconified(WindowEvent e) {}
    public void windowIconified(WindowEvent e) {}
    public void windowOpened(WindowEvent e) {}
}

class ListPanel extends JPanel implements ListSelectionListener {

    public ListPanel() {

        String [] colors = {"black", "blue", "cyan", "darkGray",
                            "gray", "green", "lightGray", "magenta",
                            "orange", "pink", "red", "white", "yellow"} ;

        list = new JList(colors) ;
        list.setVisibleRowCount(6) ;    // Default is 8

        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION) ;
        list.addListSelectionListener(this) ;

        add(new JScrollPane(list,
                 JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                 JScrollPane.HORIZONTAL_SCROLLBAR_NEVER)) ;
    }

    public void valueChanged(ListSelectionEvent evt) {
        if(!evt.getValueIsAdjusting()) {
            String color = (String) list.getSelectedValue() ;

            if(color.equals("black"))
                setBackground(Color.black) ;
            else if(color.equals("blue"))
                setBackground(Color.blue) ;
            else if(color.equals("cyan"))
                setBackground(Color.cyan) ;
            else if(color.equals("darkGray"))
                setBackground(Color.darkGray) ;
            else if(color.equals("gray"))
                setBackground(Color.gray) ;
            else if(color.equals("green"))
                setBackground(Color.green) ;
            else if(color.equals("lightGray"))
                setBackground(Color.lightGray) ;
            else if(color.equals("magenta"))
                setBackground(Color.magenta) ;
            else if(color.equals("orange"))
                setBackground(Color.orange) ;
            else if(color.equals("pink"))
                setBackground(Color.pink) ;
            else if(color.equals("red"))
                setBackground(Color.red) ;
            else if(color.equals("white"))
                setBackground(Color.white) ;
            else if(color.equals("yellow"))
                setBackground(Color.yellow) ;
                
        }
    }

    private JList list ;
}

public class ListTest {
    public static void main(String [] args) {

        JFrame frame = new JFrame() ;

        frame.setTitle("List") ;
        frame.setSize(450, 300) ;

        frame.addWindowListener(new TerminationListener()) ;

        frame.getContentPane().add(new ListPanel()) ;

        frame.setVisible(true) ;
    }
}