Error occurred while launching/running the application.

Question

Hello all,
I'm using the "tutorial" demo from Vamp, and
here's what
happened after I chg the jnlp file:
1. Enabling MIME type on my HTTPD server
2. Disabling the proxy of my IE Browser
3. Installed /jdk1.3
4. JWS started with the following error:
GENERAL:
An error occurred while launching/running the application.
Title: 4. Java Web Start Resource Loading Tutorial
Vendor: Gerald Bauer
Category: Download Error
Corrupted JAR file at http://hpsgnnec/tutorial.jar
Exception:
JNLPException[category: Download Error : Exception: java.util.zip.ZipException: error in opening zip file : LaunchDesc: null ]
     at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.getResource(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadJarFiles(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
     at com.sun.javaws.Launcher.downloadResources(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
LAUNCH FILE
<jnlp
spec="1.0+"
codebase="http://hpsgnnec" >
<information>
<title>4. Java Web Start Resource Loading Tutorial</title>
<vendor>Gerald Bauer</vendor>
<description>Tutorial on how to load resources </description>
<icon href="tutorial.gif"/>
<offline-allowed />
</information>
<resources>
<j2se version="1.3"/>
<jar href="tutorial.jar"/>
</resources>
<application-desc main-class="vamp.tutorial.Main">
</application-desc>
</jnlp>
WRAPPED EXCEPTION:
java.util.zip.ZipException: error in opening zip file
     at java.util.zip.ZipFile.open(Native Method)
     at java.util.zip.ZipFile.<init>(Unknown Source)
     at java.util.jar.JarFile.<init>(Unknown Source)
     at java.util.jar.JarFile.<init>(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol$RetrieveAction.actionDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.getResource(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadJarFiles(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
     at com.sun.javaws.Launcher.downloadResources(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Wud appreciate any advice.
THanks much,
Jessica

Answer 1

Try downloading the jar file itself and opening it with winzip or checking its contents with jar tf <jarfile name>
if it is indeed corrupt (as the exception stacktrace seems to indicate) try mailing the person who wrote the demo so that he can check whether the jarfile is there or not, and whether it is corrupt or not.
Other than that, nac.
Jeremy