Re: [platform-swt-dev] desperate : NoClassDefFoundError on Composite

[Arnaud De Muyser <ademuyser@xxxxxxxxxx>]

Have you tested to add a Class path
line in theMANIFEST.MF file contained into you jar ?
this could be close to:
Class-Path: swt.jar

But the Sun's documentation for manifest
file, seems to said this work if swt.jar is located in the same
directory of your application.jar but
not if it's inside application.jar ... a little test should confirm this.
(http://java.sun.com/docs/books/tutorial/jar/basics/manifest.html)

Arnaud.

"Johan Wasserman - BCX - Infrastructure Services" <Johan.Wasserman@xxxxxxxxx>
Sent by: platform-swt-dev-admin@xxxxxxxxxxx

10/29/2004 11:35 AM

Please respond to
platform-swt-dev

To	<platform-swt-dev@xxxxxxxxxxx>
cc
Subject	[platform-swt-dev] desperate : NoClassDefFoundError on Composite

I have eventually convinced my bosses that
Java is the way to go, got a nice project, wrote it using SWT and everything's
fine.... untill now:
 
I need to make the app "stand allone",
in other words, not run from the Eclipse IDE.  So my classes are all
in the default package (root) except for one or two utillity classes.  All
my jars, including swt.jar, is in lib and all the required dll's also lies
in the root of the project.
 
So, I jar'd the root of the project and now
I'm trying to run the app from it.  So remember all the classes, jar's
and dll's are contained whithin the new jar.
 
I get the following error when trying to
run the app from the jar...
 
Exception in thread "main" java.lang.NoClassDefFoundError:
org/eclipse/swt/widgets/Composite
        at java.lang.ClassLoader.defineClass0(Native
Method)
        at java.lang.ClassLoader.defineClass(Unknown
Source)
        at java.security.SecureClassLoader.defineClass(Unknown
Source)
        at java.net.URLClassLoader.defineClass(Unknown
Source)
        at java.net.URLClassLoader.access$100(Unknown
Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native
Method)
        at java.net.URLClassLoader.findClass(Unknown
Source)
        at java.lang.ClassLoader.loadClass(Unknown
Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown
Source)
        at java.lang.ClassLoader.loadClass(Unknown
Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown
Source)
 
 
My main class extends org.eclipse.swt.widgets.Composite
and I made the jar runnable (manifest entry).