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Duplicate :
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FULL PRODUCT VERSION :
Java Web Start 1.6.0_01
Using JRE version 1.6.0_01 Java HotSpot(TM) Client VM
(from JWS console)
ADDITIONAL OS VERSION INFORMATION :
Windows XP Pro
A DESCRIPTION OF THE PROBLEM :
Java web start (JWS) offers the installer-desc
element to identify an installer/uninstaller
for an application. The intent of the installer
is to do any application set-up/pull-down that
can not be handled by the standard JWS behaviour
of caching the classes/resources at 1st launch,
and clearing them at uninstall.
The 'install' side of the installer-desc element
seems to work as advertised, but as has been noted
in the web start forum a number of times*, the
installer is never called at time of 'uninstall'.
* Though none reported successful resolution of
the problem, it also seems no one took it through
to a bug report.
http://forum.java.sun.com/thread.jspa?forumID=38&threadID=5124101
http://forum.java.sun.com/thread.jspa?forumID=38&threadID=263691
(Note - June 2002)
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Click the link to..
http://www.physci.org/jws/application.jnlp
2) At the appearance of the 'End User License Agreement'
JOptionPane, select 'Yes'
3) Exit the 'Installed Application Demo' on appearance
of the JFrame.
4) * Go to the..
Start | Settings | Control Panel | Add or Remove Programs
..dialog. Fine the '(Trivial) Application' and select 'Remove'
5) At 'Confirm File Deletion' dialog, select 'OK'
* Also fails for removal using..
Start | Settings | Control Panel | Java
General | Temporary Internet Files | View
(right click on Application) Delete (menu item)
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
...
6) A JOptionPane with message..
'Thank you for using (Trivial) Application!'
ACTUAL -
Steps 1 through 5, never 6.
ERROR MESSAGES/STACK TRACES THAT OCCUR :
No error message apparent.
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
[Application.java]
package test;
import javax.swing.*;
/** A basic application to support our Installer example.
@author Andrew Thompson
@version 2007/6/12 */
public class Application
extends JFrame {
/** Assemble the GUI. */
Application() {
super("Installed Application Demo");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel label = new JLabel(
"<html><body align='center'>That entire EULA, just for this?!<br><br>(Yep.)",
JLabel.CENTER );
getContentPane().add( label );
pack();
setSize(630,470);
setLocationRelativeTo(null);
}
/** Construct the GUI and display it. */
public static void main(String[] args) {
Application app =
new Application();
app.setVisible(true);
}
}
[/Application.java]
[application.jnlp]
<?xml version='1.0' encoding='UTF-8' ?>
<jnlp spec='1.0'
codebase='http://www.physci.org/jws'
href='application.jnlp'>
<information>
<title>(Trivial) Application</title>
<vendor>Andrew Thompson</vendor>
<description kind='one-line'>
Trivial application to support the demo of the web-start ExtensionInstallerService
</description>
<shortcut online='false'>
<desktop/>
</shortcut>
</information>
<resources>
<j2se version='1.2+' />
<extension href="installer.jnlp" />
<jar href='application.jar' main='true' />
</resources>
<application-desc main-class='test.Application' />
</jnlp>
[application.jnlp]
[Installer.java]
package test;
import javax.swing.*;
// classes of the web-start API, used in this example.
import javax.jnlp.ExtensionInstallerService;
import javax.jnlp.ServiceManager;
import javax.jnlp.UnavailableServiceException;
class Installer {
Installer() {
try {
ExtensionInstallerService installerService =
(ExtensionInstallerService)ServiceManager.
lookup("javax.jnlp.ExtensionInstallerService");
/* We do not need the progress bar as progress
is determined by the user accepting the EULA.
They can consider it as long as they like. */
installerService.hideProgressBar();
int result = JOptionPane.showConfirmDialog(null,
"Do you agree to the EULA?",
"End User License Agreement",
JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE );
boolean agree = (result==JOptionPane.YES_OPTION);
if (agree) {
installerService.installSucceeded(false);
} else {
JOptionPane.showMessageDialog(null,
"Perhaps another time..");
installerService.installFailed();
}
} catch (UnavailableServiceException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
if ( args[0].equals("install") ) {
Installer installer = new Installer();
} else {
// no need to do anything on uninstall,
// but thank the user for their patronage
JOptionPane.showMessageDialog(null,
"Thank you for using (Trivial) Application!");
}
}
}
[/Installer.java]
[installer.jnlp]
<?xml version='1.0' encoding='UTF-8' ?>
<jnlp spec='1.0'
codebase='http://www.physci.org/jws'
href='installer.jnlp'>
<information>
<title>Application Installer</title>
<vendor>Andrew Thompson</vendor>
<description kind='one-line'>
Demo of the web-start ExtensionInstallerService
</description>
</information>
<resources>
<j2se version='1.2+' />
<jar href='installer.jar' main='true' />
</resources>
<installer-desc main-class='test.Installer' />
</jnlp>
[/installer.jnlp]
---------- END SOURCE ----------