Exceptions - Java Software Solutions: Foundations of Program Design - page 576

LISTING 11.15 continued

private JList list;

//-----------------------------------------------------------------
// Loads the list of image names into the list.
//-----------------------------------------------------------------
public ListPanel (JLabel imageLabel)
{
label = imageLabel;

String[] fileNames = { "circuit.gif",
"duke.gif",
"hammock.gif",
"justin.jpg",
"kayla.jpg",
"tiger.jpg",
"toucan.gif",
"worldmap.gif" };

list = new JList (fileNames);
list.addListSelectionListener ( new ListListener());
list.setSelectionMode (ListSelectionModel.SINGLE_SELECTION);

add (list);
setBackground (Color.white);
}

//*****************************************************************
// Represents the listener for the list of images.
//*****************************************************************
private class ListListener implements ListSelectionListener
{
public void valueChanged (ListSelectionEvent event)
{
if (list.isSelectionEmpty())
label.setIcon ( null );
else
{
String fileName = (String)list.getSelectedValue();
ImageIcon image = new ImageIcon (fileName);
label.setIcon (image);
}
}
}
}