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Re: [dsdp-ercp-dev] java.lang.UnsupportedClassVersionError
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Hi Edgar
Maybe you can open that class in binary editor (such as xxd) to check the version number.
The first 4 bytes are magic number, it should always be 0xCAFEBABE.
The next 2 bytes are minor_version, and the following 2 bytes are major_version.
Check the major_version to see if it is compatible with the JRE you are trying to use.
*jdk1.4 major 48
*jdk1.5 major 49
*jdk1.6 major 50
Regards
Johnson
On Sun, Mar 30, 2008 at 6:34 PM, Edgar Camacho <
edgar@xxxxxxxxxxxxxxxxx> wrote:
Hello,
I get the following error when I try to launch my eRCP plugin on eWorkbench.
I am compiling using 1.4 compliance level on java compiler, and
Generated .class file compatibility.
Root exception:
java.lang.UnsupportedClassVersionError:
(com/treeknowledge/tk/movil/AppPlugin) bad major version at offset=6
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(Unknown
Source)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(Unknown
Source)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(Unknown
Source)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(Unknown
Source)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Unknown
Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Unknown
Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Unknown
Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(Unknown
Source)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(Unknown
Source)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Unknown
Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Unknown
Source)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Unknown
Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(Unknown
Source)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Unknown
Source)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(Unknown
Source)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(Unknown
Source)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(Unknown
Source)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(Unknown
Source)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(Unknown Source)
at org.eclipse.ui.internal.registry.ViewDescriptor.createView(Unknown Source)
at org.eclipse.ui.internal.ViewFactory.busyRestoreViewHelper(Unknown Source)
at org.eclipse.ui.internal.ViewFactory.busyRestoreView(Unknown Source)
at org.eclipse.ui.internal.ViewFactory.restoreView(Unknown Source)
at org.eclipse.ui.internal.Perspective.showView(Unknown Source)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(Unknown Source)
at org.eclipse.ui.internal.WorkbenchPage.showView(Unknown Source)
at org.eclipse.ui.internal.WorkbenchPage.showView(Unknown Source)
at org.eclipse.ercp.eworkbench.DefaultView.launchSelection(Unknown Source)
at org.eclipse.ercp.eworkbench.DefaultView.open(Unknown Source)
at org.eclipse.jface.viewers.StructuredViewer$2.run(Unknown Source)
at org.eclipse.core.runtime.SafeRunner.run(Unknown Source)
at org.eclipse.core.runtime.Platform.run(Unknown Source)
at org.eclipse.ui.internal.JFaceUtil$1.run(Unknown Source)
at org.eclipse.jface.util.SafeRunnable.run(Unknown Source)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(Unknown Source)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(Unknown Source)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(Unknown Source)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(Unknown Source)
at org.eclipse.jface.util.OpenStrategy.access$2(Unknown Source)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.internal_sendEvent(Unknown Source)
at org.eclipse.swt.internal.symbian.OS.Display_ReadAndDispatch(Native Method)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at org.eclipse.ui.internal.Workbench.runEventLoop(Unknown Source)
at org.eclipse.ui.internal.Workbench.runUI(Unknown Source)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Unknown Source)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Unknown Source)
at org.eclipse.ercp.eworkbench.eWorkbench.run(Unknown Source)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Unknown Source)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Unknown
Source)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Unknown
Source)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
at java.lang.reflect.AccessibleObject.invokeL(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Unknown Source)
at org.eclipse.core.launcher.Main.run(Unknown Source)
at org.eclipse.core.launcher.Main.main(Unknown Source)
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