[jbosstools-issues] [JBoss JIRA] (JBDS-4149) Run Browsersim > java.lang.NoClassDefFoundError: javax/servlet/Servlet on exit

[ https://issues.jboss.org/browse/JBDS-4149?page=com.atlassian.jira.plugin.... ] Nick Boldt updated JBDS-4149: ----------------------------- Description: I launch the browsersim (from Quick Access > Run Browsersim), and then exit the sim, this error appears: !browsersim-error-on-close.png|thumbnail! {code} javax/servlet/Servlet Stack trace: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.jboss.tools.browsersim.ui.util.ReflectionUtil.call(ReflectionUtil.java:21) at org.jboss.tools.browsersim.ui.BrowserSim$3.widgetDisposed(BrowserSim.java:201) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:124) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1366) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1345) at org.eclipse.swt.widgets.Widget.release(Widget.java:1153) at org.eclipse.swt.widgets.Control.release(Control.java:3988) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:479) at org.eclipse.swt.widgets.Shell.dispose(Shell.java:2666) at org.eclipse.swt.widgets.Shell.closeWidget(Shell.java:670) at org.eclipse.swt.widgets.Shell.close(Shell.java:665) at org.jboss.tools.browsersim.ui.menu.BrowserSimMenuCreator$9.widgetSelected(BrowserSimMenuCreator.java:263) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5219) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4553) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4143) at org.jboss.tools.browsersim.ui.launch.BrowserSimRunner.main(BrowserSimRunner.java:127) Caused by: java.lang.ClassNotFoundException: javax.servlet.Servlet at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 24 more {code} So... Maybe another javax.servlet requirement that's not properly defined? was: I am not able to use embedded Maven. When I try to run Maven clean (or whatever else) I get following error message: {code} Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetMethodRecursive(Class.java:3048) at java.lang.Class.getMethod0(Class.java:3018) at java.lang.Class.getMethod(Class.java:1784) at org.codehaus.plexus.classworlds.launcher.Launcher.getEnhancedMainMethod(Launcher.java:172) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:268) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50) at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239) ... 10 more {code} Standalone maven installation works fine. -- This message was sent by Atlassian JIRA (v7.2.3#72005)