Demonstration of Applet Methods
/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
//applet.html
/*
<title>Demonstration of Applet Methods</title>
<body bgcolor="white">
<h1>Demonstration of Applet Methods</h1>
<applet code="AppletMethods" width=200 height=100>
<param name="SNDFILE" VALUE="foo.au">
</applet>
*/
import java.applet.Applet;
import java.applet.AudioClip;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
/** AppletMethods -- show stop/start and AudioClip methods */
public class AppletMethods extends Applet {
/** AudioClip object, used to load and play a sound file. */
AudioClip snd = null;
/** Initialize the sound file object and the GUI. */
public void init() {
System.out.println("In AppletMethods.init()");
try {
snd = getAudioClip(new URL(getCodeBase(), "laugh.au"));
} catch (MalformedURLException e) {
showStatus(e.toString());
}
setSize(200,100); // take the place of a GUI
}
/** Called from the Browser when the page is ready to go. */
public void start() {
System.out.println("In AppletMethods.start()");
if (snd != null)
snd.play(); // loop() to be obnoxious...
}
/** Called from the Browser when the page is being vacated. */
public void stop() {
System.out.println("In AppletMethods.stop()");
if (snd != null)
snd.stop(); // stop play() or loop()
}
/** Called from the Browser (when the applet is being un-cached?).
* Not actually used here, but the println will show when it's called.
*/
public void destroy() {
System.out.println("In AppletMethods.destroy()");
}
public void paint(Graphics g) {
g.drawString("Welcome to Java", 50, 50);
}
/** An alternate form of getParameter that lets
* you provide a default value, since this is so common.
*/
public String getParameter(String p, String def) {
return getParameter(p)==null?def:getParameter(p);
}
}
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