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 DefaultListModelPanel extends JPanel implements ActionListener {

    public DefaultListModelPanel() {

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

        keys = new DefaultListModel() ;
        for(int i = 0 ; i < colors.length ; i++)
            keys.addElement(colors [i]) ;

        list = new JList(keys) ;
        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION) ;

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

        JButton delete = new JButton("delete") ;
        delete.addActionListener(this) ;
        add(delete) ;
    }

    public void actionPerformed(ActionEvent evt) {
        int index = list.getSelectedIndex() ;
        if(index >= 0) {
            keys.remove(index) ; 
        } else
            Toolkit.getDefaultToolkit().beep() ;
    }

    private JList list ;
    private DefaultListModel keys ;
}

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

        JFrame frame = new JFrame() ;

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

        frame.addWindowListener(new TerminationListener()) ;

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

        frame.setVisible(true) ;
    }
}