JList Background Images..Urgent

I has done a JList that can change background color when i selected each of it, but if i want to change background image rather than background colors, how can i do it?

Please help!

my previous coding as below: import java.awt.*; import javax.swing.*; import javax.swing.event.*;

public class ListTest extends JFrame{ private JList colorList; private Container container;

private final String colorNames[]={"Black","Blue","Cyan","Dark Gray","Gray","Green","Light Gray","Magenta","Orange","Pink","Red","White","Yellow"};

private final Color colors[]={Color.BLACK,Color.BLUE,Color.CYAN,Color.DARK_GRAY,Color.GRAY,Color.GREEN,Color.LIGHT_GRAY,Color.MAGENTA,Color.ORANGE,Color.PINK,Color.RED,Color.WHITE,Color.YELLOW
};

public ListTest()
{
    super("List Test");

    container=getContentPane();
    container.setLayout(new FlowLayout());

    colorList= new JList(colorNames);
    colorList.setVisibleRowCount(5);

    colorList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

    container.add(new JScrollPane(colorList));
    colorList.addListSelectionListener(
        new ListSelectionListener(){

            public void valueChanged(ListSelectionEvent event){
                container.setBackground(
                    colors[colorList.getSelectedIndex()]);

            }
        }
        );
        setSize(350,150);
        setVisible(true);
}
public static void main(String args[])
{
    ListTest application=new ListTest();
    application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

}