programming-examples/java/Servlets_Session_Swing_Util/Select colors from JList.java

Select colors from JList

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

public class SelectColors extends JFrame
     {
     private JList colorList;
     private Container c;
    
     private String colorNames[] =
         { "Black", "Blue", "Cyan", "Dark Gray", "Gray", "Green",
         "Light Gray", "Magenta", "Orange", "Pink", "Red",
     "White", "Yellow" };
    
     private Color colors[] =
         { Color.black, Color.blue, Color.cyan, Color.darkGray,
         Color.gray, Color.green, Color.lightGray,
         Color.magenta, Color.orange, Color.pink, Color.red,
     Color.white, Color.yellow };
    
     public SelectColors()
         {
         super( "List Test" );
        
         c = getContentPane();
         c.setLayout( new FlowLayout() );
        
         // create a list with the items in the colorNames array
         colorList = new JList( colorNames );
         colorList.setVisibleRowCount( 5 );
        
         // do not allow multiple selections
         colorList.setSelectionMode( ListSelectionModel.SINGLE_SELECTION );
        
         // add a JScrollPane containing the JList
         // to the content pane
         c.add( new JScrollPane( colorList ) );
        
         // set up event handler
         colorList.addListSelectionListener( new ListSelectionListener()
             {
             public void valueChanged( ListSelectionEvent e )
                 {
                 c.setBackground( colors[ colorList.getSelectedIndex() ] );
             }
         } );
        
         setSize( 350, 150 );
         show();
     }
    
     public static void main( String args[] )
         {
         SelectColors app = new SelectColors();
        
         app.addWindowListener( new WindowAdapter()
             {
             public void windowClosing( WindowEvent e )
                 {
                 System.exit( 0 );
             }
         } );
     }
}