[platform-ui-dev] PDE: NoClassDefFoundError

[Timo Nentwig <eclipse@xxxxxxxxx>]

Hi!

I'm not quite sure whether this is the right place to post but there aren't 
any other :-)

So, I tried to write a plugin for the first time, switched to the PDE 
perspective and create a sample view plugin using the wizard. Unfortunately I 
cannot run it as run-time workbench. This is quite strange since the required 
JAR is in class path and also the editor does not complain about anything.

So what's going wrong here? I did nothing, everything was done by the wizard, 
I just clicked next...


java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Dialog
        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:1610)
        at java.lang.Class.getConstructor0(Class.java:1922)
        at java.lang.Class.newInstance0(Class.java:278)
        at java.lang.Class.newInstance(Class.java:261)
        at 
org.eclipse.core.internal.plugins.PluginDescriptor.createExecutableExtension(PluginDescriptor.java:138)
        at 
org.eclipse.core.internal.plugins.PluginDescriptor.createExecutableExtension(PluginDescriptor.java:167)
        at 
org.eclipse.core.internal.plugins.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:103)
        at 
org.eclipse.core.internal.runtime.InternalPlatform.loaderGetRunnable(InternalPlatform.java:584)
        at 
org.eclipse.core.internal.runtime.InternalPlatform.checkVersionPrompt(InternalPlatform.java:508)
        at 
org.eclipse.core.internal.runtime.InternalPlatform.loaderCheckVersion(InternalPlatform.java:484)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at 
org.eclipse.core.internal.boot.InternalBootLoader.checkVersion(InternalBootLoader.java:873)
        at 
org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:842)
        at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:295)
        at org.eclipse.core.launcher.Main.run(Main.java:751)
        at org.eclipse.core.launcher.Main.main(Main.java:587)