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Home » Newcomers » Newcomers » Eclipse RCP-Plug-in "com.masterdemo" was unable to instantiate class com.master.rcp.Master(org.eclipse.core.runtime.CoreException: Plug-in "com.masterdemo" was unable to instantiate class "com.master.rcp.MasterApplication".)
Eclipse RCP-Plug-in "com.masterdemo" was unable to instantiate class com.master.rcp.Master [message #1816102] Mon, 21 October 2019 09:20 Go to next message
Soumali Chatterjee is currently offline Soumali ChatterjeeFriend
Messages: 1
Registered: October 2019
Junior Member
Getting following exception while executing plugin, using eclipse rcp:

org.eclipse.core.runtime.CoreException: Plug-in "com.masterdemo" was unable to instantiate class "com.master.rcp.MasterApplication".
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:206)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:934)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:246)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:63)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:198)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:660)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
at org.eclipse.equinox.launcher.Main.run(Main.java:1468)
at org.eclipse.equinox.launcher.Main.main(Main.java:1441)
Caused by: java.lang.NoClassDefFoundError: com/container/ContainerException
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3138)
at java.base/java.lang.Class.getConstructor0(Class.java:3343)
at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2554)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:204)
... 16 more
Caused by: java.lang.ClassNotFoundException: com.container.ContainerException cannot be found by com.master.masterdemo_6.0.3
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:514)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:425)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:155)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 21 more
Re: Eclipse RCP-Plug-in "com.masterdemo" was unable to instantiate class com.master.rcp.Ma [message #1816112 is a reply to message #1816102] Mon, 21 October 2019 11:59 Go to previous message
Ed Merks is currently offline Ed MerksFriend
Messages: 30635
Registered: July 2009
Senior Member
These are all confusing class names. It impossible to comment without seeing what you've all put in your plugin.xmls and what class names you're all using, but it looks like a mess...
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