I added the current java version above and I can also confirm that I can not open other java projects.
** Summary changed: - can not create new project ClassNotFoundException + can not open any project - ClassNotFoundException ** Description changed: I can not create a new java application project. The problem occours at two pc's with lubuntu and xubuntu 14.04 64 Bit. I tried netbeans 8 from netbeans.org, this one is working. installed: $ dpkg -l | grep openjdk ii openjdk-6-jdk:amd64 6b31-1.13.3-1ubuntu1 amd64 OpenJDK Development Kit (JDK) ii openjdk-6-jre:amd64 6b31-1.13.3-1ubuntu1 amd64 OpenJDK Java runtime, using Hotspot JIT ii openjdk-6-jre-headless:amd64 6b31-1.13.3-1ubuntu1 amd64 OpenJDK Java runtime, using Hotspot JIT (headless) ii openjdk-6-jre-lib 6b31-1.13.3-1ubuntu1 all OpenJDK Java runtime (architecture independent libraries) ii openjdk-7-demo 7u55-2.4.7-1ubuntu1 amd64 Java runtime based on OpenJDK (demos and examples) ii openjdk-7-doc 7u55-2.4.7-1ubuntu1 all OpenJDK Development Kit (JDK) documentation ii openjdk-7-jdk:amd64 7u55-2.4.7-1ubuntu1 amd64 OpenJDK Development Kit (JDK) ii openjdk-7-jre:amd64 7u55-2.4.7-1ubuntu1 amd64 OpenJDK Java runtime, using Hotspot JIT ii openjdk-7-jre-headless:amd64 7u55-2.4.7-1ubuntu1 amd64 OpenJDK Java runtime, using Hotspot JIT (headless) ii openjdk-7-jre-lib 7u55-2.4.7-1ubuntu1 all OpenJDK Java runtime (architecture independent libraries) ii openjdk-7-source 7u55-2.4.7-1ubuntu1 all OpenJDK Development Kit (JDK) source files error message: java.lang.ClassNotFoundException: com.sun.tools.javac.util.CancelAbort starting from ModuleCL@30a303f8[org.netbeans.modules.java.source] with possible defining loaders [ModuleCL@ecdede5[org.netbeans.libs.javacimpl]] and declared parents [ModuleCL@53cb966[org.netbeans.modules.queries], ModuleCL@8e8be66[org.openide.dialogs], ModuleCL@367dd4d9[org.netbeans.modules.parsing.api], ModuleCL@41e69be8[org.netbeans.modules.options.editor], ModuleCL@4f16ac7e[org.netbeans.modules.classfile], ModuleCL@6ab39ec9[org.netbeans.modules.parsing.lucene], ModuleCL@ecdede5[org.netbeans.libs.javacimpl], ModuleCL@4066a7f5[org.netbeans.modules.editor.util], ModuleCL@c200022[org.netbeans.api.progress], ModuleCL@55afda39[org.openide.awt], ...26 more] at org.netbeans.ProxyClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Caused: java.lang.NoClassDefFoundError: com/sun/tools/javac/util/CancelAbort at org.netbeans.modules.java.source.parsing.JavacParserFactory.createPrivateParser(Unknown Source) at org.netbeans.api.java.source.JavaSource$JavaSourceAccessorImpl.createCompilationController(Unknown Source) at org.netbeans.modules.java.source.save.Reformatter.reformat(Unknown Source) at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.runTask(Unknown Source) at org.netbeans.modules.editor.indent.TaskHandler.runTasks(Unknown Source) at org.netbeans.modules.editor.indent.IndentImpl.reformat(Unknown Source) at org.netbeans.modules.editor.indent.api.Reformat.reformat(Unknown Source) at org.netbeans.editor.ActionFactory.reformat(Unknown Source) at org.netbeans.editor.BaseDocument$Accessor.ActionFactory_reformat(Unknown Source) at org.netbeans.modules.editor.EditorModule$8.run(Unknown Source) at org.netbeans.editor.GuardedDocument.runAtomicAsUser(Unknown Source) at org.openide.text.NbDocument.runAtomicAsUser(Unknown Source) at org.netbeans.modules.editor.EditorModule.reformat(Unknown Source) at org.netbeans.modules.editor.EditorModule.access$100(Unknown Source) at org.netbeans.modules.editor.EditorModule$6.operationCreateFromTemplate(Unknown Source) at org.openide.loaders.DataLoaderPool.fireOperationEvent(Unknown Source) at org.openide.loaders.DataObject.fireOperationEvent(Unknown Source) at org.openide.loaders.DataObject.createFromTemplate(Unknown Source) at org.openide.loaders.DataObject.createFromTemplate(Unknown Source) at org.netbeans.modules.java.j2seproject.api.J2SEProjectBuilder.createMainClass(Unknown Source) at org.netbeans.modules.java.j2seproject.api.J2SEProjectBuilder.access$1900(Unknown Source) at org.netbeans.modules.java.j2seproject.api.J2SEProjectBuilder$1.run(Unknown Source) at org.openide.filesystems.EventControl.runAtomicAction(Unknown Source) at org.openide.filesystems.FileSystem.runAtomicAction(Unknown Source) at org.netbeans.modules.java.j2seproject.api.J2SEProjectBuilder.build(Unknown Source) at org.netbeans.modules.java.j2seproject.J2SEProjectGenerator.createProject(Unknown Source) at org.netbeans.modules.java.j2seproject.ui.wizards.NewJ2SEProjectWizardIterator.instantiate(Unknown Source) at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(Unknown Source) at org.openide.loaders.TemplateWizard.handleInstantiate(Unknown Source) at org.openide.loaders.TemplateWizard.instantiateNewObjects(Unknown Source) at org.openide.loaders.TemplateWizardIterImpl.instantiate(Unknown Source) at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(Unknown Source) at org.openide.WizardDescriptor.callInstantiateOpen(Unknown Source) at org.openide.WizardDescriptor.callInstantiate(Unknown Source) at org.openide.WizardDescriptor.access$1700(Unknown Source) at org.openide.WizardDescriptor$Listener$2$1.run(Unknown Source) [catch] at org.openide.util.RequestProcessor$Task.run(Unknown Source) at org.openide.util.RequestProcessor$Processor.run(Unknown Source) + + I translated: + $ update-alternatives --display java + java - Auto-Modus + Link refers to the time at /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java + /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java - Priorität 1071 + Slave java.1.gz: /usr/lib/jvm/java-7-openjdk-amd64/jre/man/man1/java.1.gz + At present "best" version is »/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java«. + + --- ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CurrentDesktop: LXDE DistroRelease: Ubuntu 14.04 InstallationDate: Installed on 2013-08-10 (281 days ago) InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1) Package: netbeans 7.0.1+dfsg1-5ubuntu2 PackageArchitecture: all ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11 Tags: trusty Uname: Linux 3.13.0-27-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-04-18 (31 days ago) UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1320948 Title: can not open any project - ClassNotFoundException To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netbeans/+bug/1320948/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs