Exceptions - Java Software Solutions: Foundations of Program Design - page 565

LISTING 11.11
//********************************************************************
// JukeBox.java Author: Lewis/Loftus
//
// Demonstrates the use of a combo box.
//********************************************************************
import javax.swing.*;
public class JukeBox
{
//-----------------------------------------------------------------
// Creates and displays the controls for a juke box.
//-----------------------------------------------------------------
public static void main (String[] args)
{
JFrame frame = new JFrame ("Java Juke Box");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
JukeBoxControls controlPanel = new JukeBoxControls();
frame.getContentPane().add(controlPanel);
frame.pack();
frame.setVisible( true );
}
}
DISPLAY
Once created, the URL objects are used to create AudioClip objects using the static
newAudioClip method of the JApplet class. The audio clips are stored in an array.
The first entry in the array, at index 0, is set to null . This entry corresponds to the
initial combo box option, which simply encourages the user to make a selection.