java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Listener

ZogDog · 11-28-2010, 05:09 AM

Linux newbie, but not ignorant. Followed steps to this point, can't get client.jnlp from "http://www.campusbuyback.com/download.html" to work.

Here's what I've done so far to make sure java was enable and installed correctly:

Code:

sudo apt-get install xubuntu-restricted-extras

Code:

sudo apt-get install sun-java6-jre sun-java6-plugin sun-java6-fonts

accepted the license, completed the install. Every time I try and launch the app from the listed site above, I get an application error with the following data showing:

Launch File

Code:

<!DOCTYPE jnlp PUBLIC "-//Sun Microsystems, Inc//DTD JNLP Descriptor 6.0//EN" "http://java.sun.com/dtd/JNLP-6.0.dtd">
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="6.0+" version="3812" codebase="http://prod.webstart.ucentive.net/webstart/"  href="client.jnlp">
	<information>
		<title>UCentive Client</title>
		<vendor>UCentive</vendor>
    	<shortcut online="true">
      		<desktop/>
      		<menu submenu="UCentive" />
      	</shortcut>
	</information>

	<security>
		<all-permissions/>
	</security>

	<update check="always" policy="always" />

	<resources>
		<java version="1.6+" initial-heap-size="256M" max-heap-size="1024M" />

		<!-- Client -->
		<jar href="client.jar" />
		<jar href="lib/commons-codec-1.4.jar" />
		<jar href="lib/commons-httpclient-3.1.jar" />
		<jar href="lib/entities-jpa.jar" />
		<jar href="lib/jersey-apache-client-1.1.5.jar" />
		<jar href="lib/jersey-client-1.1.5.jar" />
		<jar href="lib/jersey-core-1.1.5.jar" />
		<jar href="lib/jsr311-api-1.1.jar" />
		<jar href="lib/ucentive-common.jar" />
		<jar href="lib/ucentive-utils.jar" />

		<!-- Reports -->
		<jar href="lib/report/commons-beanutils.jar" />
		<jar href="lib/report/commons-collections.jar" />
		<jar href="lib/report/commons-digester-1.8.jar" />
		<jar href="lib/report/commons-logging.jar" />
		<jar href="lib/report/jasperreports-3.7.4.jar" />
		<jar href="lib/report/JasperReportUtil-client.jar" />
		<jar href="lib/report/report-plugin-client.jar" />

	</resources>

	<resources os="Linux" arch="x86_64">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-gtk-linux-x86_64.jar" />
	</resources>

	<resources os="Linux" arch="amd64">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-gtk-linux-x86_64.jar" />
	</resources>

	<resources os="Linux" arch="x86">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-gtk-linux-x86.jar" />
	</resources>

	<resources os="Mac OS X" arch="x86_64">
		<java version="1.6+" java-vm-args="-XstartOnFirstThread -d64" />
		<jar href="lib/swt/swt-3.6-cocoa-macosx-x86_64.jar" />
	</resources>

	<resources os="Mac OS X" arch="x86">
		<java version="1.6+" java-vm-args="-XstartOnFirstThread -d32" />
		<jar href="lib/swt/swt-3.6-cocoa-macosx.jar" />
	</resources>

	<resources os="Windows" arch="x86_64">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-win32-win32-x86_64.jar" />
	</resources>

	<resources os="Windows" arch="amd64">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-win32-win32-x86_64.jar" />
	</resources>

	<resources os="Windows" arch="x86">
		<java version="1.6+" />
		<jar href="lib/swt/swt-3.6-win32-win32-x86.jar" />
	</resources>

	<application-desc main-class="net.ucentive.client.ClientApp">
		<argument>http://prod.apps.ucentive.net/production/</argument>
	</application-desc>
</jnlp>

Exception

Code:

java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Listener
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
	at java.lang.Class.getMethod0(Unknown Source)
	at java.lang.Class.getMethod(Unknown Source)
	at com.sun.javaws.Launcher.executeApplication(Launcher.java:1788)
	at com.sun.javaws.Launcher.executeMainClass(Launcher.java:1745)
	at com.sun.javaws.Launcher.doLaunchApp(Launcher.java:1507)
	at com.sun.javaws.Launcher.run(Launcher.java:129)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Listener
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at com.sun.jnlp.JNLPClassLoader.findClass(JNLPClassLoader.java:332)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 9 more

Console

Code:

Java Web Start 1.6.0_21
Using JRE version 1.6.0_22-b04 Java HotSpot(TM) Server VM
User home directory = /home/clayton
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
m:   print memory usage
o:   trigger logging
p:   reload proxy configuration
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
0-5: set trace level to <n>
----------------------------------------------------
Could not launch from cache. Will try online mode. [Some of required resources are not cached.]
#### Java Web Start Error:
#### java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Listener

Any suggestions on what I need to do to get the application working? This is critical for my friends bookstore to get going on Monday.

Thank you

ZogDog · 11-28-2010, 10:57 AM

Anyone?

pga123 · 09-03-2013, 04:50 PM

When javaws reads the os and arch properties in your resource tags, it stops as soon as it finds a match. So if the os is Windows and the architecture is x86 it will accept os="Windows" arch="x86_64" as a match. This will cause the wrong file to be loaded and potentially cause your problem. You need to put x86 before x86_64 to avoid this.