Develop Reference

Error Running RCP Project in Eclipse

I have inherited an existing RCP project, and I am totally new to how this type of project works.
I am running Eclipse IDE for Java Developers (Version: Oxygen.3 Release (4.7.3)).
When I try to run the project as an Eclipse application, I get the following error:
java.lang.NullPointerException
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.<init>(ModelServiceImpl.java:122)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createDefaultContext(E4Application.java:511)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createE4Workbench(E4Application.java:204)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:614)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:151)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
at org.eclipse.equinox.launcher.Main.main(Main.java:1472)
I have seen some solutions for this issue saying org.eclipse.equinox.ds and org.eclipse.equinox.event are required to be included in the plugin dependencies, but this has not solved my problem.

To solve this issue, I did the following:
Delete my Run configuration: Run > Run Configuration, then select the configuration, press big red x button, close
Created product configuration: File > New > Other, then Plugin Development > Product Configuration, next, select project, provide product configuration filename, finish
Product configuration file should be opened automatically (if not, open it), then, select Contents tab, and add the org.eclipse.equinox.event plugin
Select Configuration tab, add org.eclipse.equinox.event to Start Levels and set Auto-Start to true

automatically import maven projects from .bat file

I have a .bat file that is creating the workspace for eclipse when executed on windows.
I want to import the maven projects when the .bat file is executed.(instead of manually adding the maven projects in eclipse)
So I added in the .bat file:
call mvn -Declipse.workspace=eclipseWorkspace eclipse:add-maven-repo
call eclipse -nosplash -application
org.eclipse.cdt.managedbuilder.core.headlessbuild -importAll
"svn://Repository..."
but got this error for the second call eclipse..:
!MESSAGE Application error !STACK 1 java.lang.RuntimeException:
Application "org.eclipse.cdt.managedbuilder.core.headlessbuild" could
not be found in the registry. The applications available are:
org.eclipse.ant.core.antRunner,
org.eclipse.e4.ui.workbench.swt.E4Application,
org.eclipse.e4.ui.workbench.swt.GenTopic,
org.eclipse.equinox.app.error, org.eclipse.equinox.p2.director,
org.eclipse.equinox.p2.garbagecollector.application,
org.eclipse.equinox.p2.publisher.InstallPublisher,
org.eclipse.equinox.p2.publisher.EclipseGenerator,
org.eclipse.equinox.p2.publisher.ProductPublisher,
org.eclipse.equinox.p2.publisher.FeaturesAndBundlesPublisher,
org.eclipse.equinox.p2.reconciler.application,
org.eclipse.equinox.p2.repository.repo2runnable,
org.eclipse.equinox.p2.repository.metadataverifier,
org.eclipse.equinox.p2.artifact.repository.mirrorApplication,
org.eclipse.equinox.p2.metadata.repository.mirrorApplication,
org.eclipse.equinox.p2.touchpoint.natives.nativePackageExtractor,
org.eclipse.equinox.p2.updatesite.UpdateSitePublisher,
org.eclipse.equinox.p2.publisher.UpdateSitePublisher,
org.eclipse.equinox.p2.publisher.CategoryPublisher,
org.eclipse.jdt.apt.core.aptBuild, org.eclipse.ui.ide.workbench,
org.eclipse.ant.ui.antRunner,
org.eclipse.help.base.infocenterApplication,
org.eclipse.help.base.helpApplication,
org.eclipse.help.base.indexTool,
org.eclipse.jdt.core.JavaCodeFormatter,
org.eclipse.jdt.core.JavaIndexer. at
org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:248)
at
org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationLauncher.java:29)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) at
org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at
org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at
org.eclipse.equinox.launcher.Main.run(Main.java:1515)
I could not find an example how to import maven project into eclipse through cmd. If someone can share some knowledge it will be highly appreciated.
Regards,
Kire

What is the reason you import it headless?
If you want to provide a "taylormade" Eclipse incl. Workspace you can try Oomph or Eclipse Profiles -> http://profiles.yatta.de?download. Eclipse Profiles has SVN ...

my Eclipse just keep reporting errors but I don't know why

I installed an maven plugin to my eclipse but soon I noticed I don't really need it because I can just use external one. The Eclipse just started to give me some error like this no matter what I do.
>eclipse.buildId=4.4.0.I20140606-1215
java.version=1.8.0_20
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_GB
Framework arguments: -Xms1024M
Command-line arguments: -os win32 -ws win32 -arch x86_64 -data H:\eclipse -Xms1024M
>org.eclipse.jface
Error
Mon May 18 23:37:28 BST 2015
Problems occurred when invoking code from plug-in: "org.eclipse.jface".
>java.lang.LinkageError: org/aspectj/runtime/internal/CFlowCounter
at org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider.computeDescriptor_aroundBody1$advice(JavaElementImageProvider.java)
at org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider.computeDescriptor_aroundBody2(JavaElementImageProvider.java:1)
at org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider$AjcClosure3.run(JavaElementImageProvider.java:1)
at scala.tools.eclipse.contribution.weaving.jdt.imagedescriptor.ImageDescriptorSelectorAspect.ajc$around$scala_tools_eclipse_contribution_weaving_jdt_imagedescriptor_ImageDescriptorSelectorAspect$2$80f5da8dproceed(ImageDescriptorSelectorAspect.aj:89)
at scala.tools.eclipse.contribution.weaving.jdt.imagedescriptor.ImageDescriptorSelectorAspect.ajc$around$scala_tools_eclipse_contribution_weaving_jdt_imagedescriptor_ImageDescriptorSelectorAspect$2$80f5da8d(ImageDescriptorSelectorAspect.aj:94)
at org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider.computeDescriptor(JavaElementImageProvider.java:116)
at org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider.getImageLabel(JavaElementImageProvider.java:98)
at org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider.getImage(JavaUILabelProvider.java:144)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerLabelProvider.getImage(PackageExplorerLabelProvider.java:140)
at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.getImage(DelegatingStyledCellLabelProvider.java:195)
at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.getImage(DecoratingStyledCellLabelProvider.java:173)
at org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.update(DelegatingStyledCellLabelProvider.java:121)
at org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider.update(DecoratingStyledCellLabelProvider.java:136)
at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:154)
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:949)
at org.eclipse.jface.viewers.AbstractTreeViewer$UpdateItemSafeRunnable.run(AbstractTreeViewer.java:114)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.AbstractTreeViewer.doUpdateItem(AbstractTreeViewer.java:1029)
at org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:472)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2150)
at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:843)
at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:818)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:791)
at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:611)
at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:762)
at org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpand(AbstractTreeViewer.java:1495)
at org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeViewer.java:903)
at org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded(AbstractTreeViewer.java:1507)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:132)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1085)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1070)
at org.eclipse.swt.widgets.Tree.wmNotifyChild(Tree.java:7633)
at org.eclipse.swt.widgets.Control.wmNotify(Control.java:5618)
at org.eclipse.swt.widgets.Composite.wmNotify(Composite.java:1935)
at org.eclipse.swt.widgets.Control.WM_NOTIFY(Control.java:5169)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4666)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5023)
at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2443)
at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1553)
at org.eclipse.swt.widgets.Tree.WM_LBUTTONDOWN(Tree.java:6501)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4646)
at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:6024)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5023)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2549)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:236)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
I totally don't know what's going on now. Even if I deleted the plug-in, it didn't work. I don't really want to re-install Eclipse because there're some permission issues. Does anyone have any idea what this issue is about? Thank you very much.

I think it is related to JDT Weaving for Scala. I think uninstalling scala plugin should help.
Even today, I had the same error after updating scala plugin. When I've uninstalled the plugin, problem was gone.

If the use of external maven is causing your problem, try refreshing your workspace after a build with maven as Eclipse plugins sometimes don't recognize external changes to resources.

As added by Chris, Eclipse sometimes fails to recognize external changes.
After adding or removing jar/plugins make sure to do the following:
Eclipse-->Project-->Clean
Project-->Refresh
Project-->Run As-->Maven Clean
Project-->Run As--> Maven Install
Also its better to have
Eclipse-->Project-->Build Automatically,
which generally resolves such change issues.

Unsupported Class Version during Maven build in Jenkins

I've seen a few of these questions on here, but none of the solutions/tips seem to be pointing me in the right direction. So I have 3 JDK's installed in the locations of "/opt/java/6", "/opt/java/7", and "/opt/java/8". All of these are set in the global Jenkins configuration. Jenkins itself is run using Java 8 which is the system default JRE that I set manually through alternatives (I'm using CentOS 7). I had a bunch of old projects that are built using maven and the maven compiler plugin which is set to source=1.6 target=1.6 . Every time I try to execute a build with the Java 6 JDK I get
Started by user Antony Prince
ln builds/lastSuccessfulBuild /var/lib/jenkins/jobs/BitCalculator/lastSuccessful failed
java.nio.file.DirectoryNotEmptyException: /var/lib/jenkins/jobs/BitCalculator/lastSuccessful
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:242)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at hudson.Util.createSymlinkJava7(Util.java:1194)
at hudson.Util.createSymlink(Util.java:1112)
at hudson.model.Run.createSymlink(Run.java:1851)
at hudson.model.Run.updateSymlinks(Run.java:1832)
at hudson.model.Run.execute(Run.java:1743)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
ln builds/lastStableBuild /var/lib/jenkins/jobs/BitCalculator/lastStable failed
java.nio.file.DirectoryNotEmptyException: /var/lib/jenkins/jobs/BitCalculator/lastStable
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:242)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at hudson.Util.createSymlinkJava7(Util.java:1194)
at hudson.Util.createSymlink(Util.java:1112)
at hudson.model.Run.createSymlink(Run.java:1851)
at hudson.model.Run.updateSymlinks(Run.java:1833)
at hudson.model.Run.execute(Run.java:1743)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
Building in workspace /var/lib/jenkins/workspace/BitCalculator
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url /home/git/repositories/java/BitCalculator.git # timeout=10
Fetching upstream changes from /home/git/repositories/java/BitCalculator.git
> git --version # timeout=10
> git fetch --tags --progress /home/git/repositories/java/BitCalculator.git +refs/heads/*:refs/remotes/origin/*
> git rev-parse origin/master^{commit} # timeout=10
Checking out Revision 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8 (origin/master)
> git config core.sparsecheckout # timeout=10
> git checkout -f 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8
> git rev-list 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8 # timeout=10
Parsing POMs
[BitCalculator] $ /opt/java/6/bin/java -Djava.awt.headless=true -cp /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-agent-1.5.jar:/usr/share/maven/boot/plexus-classworlds.jar org.jvnet.hudson.maven3.agent.Maven3Main /usr/share/maven /var/lib/jenkins/war/WEB-INF/lib/remoting-2.44.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-1.5.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.5.jar 56445
<===[JENKINS REMOTING CAPACITY]===>channel started
Executing Maven: -B -f /var/lib/jenkins/workspace/BitCalculator/pom.xml -P sign clean deploy
java.lang.reflect.InvocationTargetException
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:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:331)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
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:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.UnsupportedClassVersionError: javax/inject/Provider : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:386)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:86)
... 22 more
channel stopped
[BitCalculator] $ /bin/sh -xe /tmp/hudson6524656470722686910.sh
+ rm 'target/*no_deps*'
rm: cannot remove 'target/*no_deps*': No such file or directory
Build step 'Execute shell' marked build as failure
ERROR: Failed to parse POMs
hudson.util.IOException2: java.lang.reflect.InvocationTargetException
at hudson.maven.Maven3Builder.call(Maven3Builder.java:178)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.reflect.InvocationTargetException
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:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
... 10 more
Caused by: java.lang.Exception: java.lang.reflect.InvocationTargetException
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:181)
... 15 more
Caused by: java.lang.reflect.InvocationTargetException
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:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:331)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
... 15 more
Caused by: java.lang.UnsupportedClassVersionError: javax/inject/Provider : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:386)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:86)
... 22 more
Archiving artifacts
Sending e-mails to: antony#blazrsoft.com
Finished: FAILURE
This indicates that there's Java 7 interfering somewhere, but I'm not sure where.
The code is 1.6 compliant and most of the projects have no dependencies, so I'm not sure why this is happening. If I execute maven outside of Jenkins, the projects build just fine with JDK 6, so its leading me to think there's a misconfiguration in Jenkins somewhere, but I'm not sure where since everything seems to be as it should be. The paths to the JDKs are set properly in the global config and the projects themselves are set to use the specified JDK's. I apologize if its a duplicate question or something silly, but I've been trying to figure this out for days with no results. Everyone just says to check the paths and make sure there are no dependent artifacts built with a later JDK and I'm sure that this is not the problem.
$ mvn -version
Apache Maven 3.0.5 (Red Hat 3.0.5-16)
Maven home: /usr/share/maven
Java version: 1.8.0_20, vendor: Oracle Corporation
Java home: /opt/java/8/jre
Default locale: en_US, platform encoding: ANSI_X3.4-1968
OS name: "linux", version: "2.6.32-openvz-042stab090.5-amd64", arch: "amd64", family: "unix"
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<encoding>UTF-8</encoding>
<source>1.6</source>
<target>1.6</target>
<compilerVersion>1.6</compilerVersion>
</configuration>
</plugin>

You have an old java version. For example in my case I´m compiling an old product so I have to keep the java deprecated version.
So the solution was to download a newest jdk and configure the JAVA_HOME in the slave.
http://lmarccdk12.ptx.fr.sopra:14000/computer//configure in the section Advanced/JavaPath=/root/jdk1.7.0_79/bin/java (that´s the version I chose)
You will see the following message in the slave launch log:
[SSH] Starting slave process: cd "/root" && /root/jdk1.7.0_79/bin/java -jar slave.jar

Your Jenkins job is of type "Maven project", and this job type has a limitation in that it cannot run a Maven build with a JDK version that is older than the Java version under which Jenkins is run.
Beginning with Jenkins 2.357 (released on June 28, 2022) and the forthcoming 2.361.1 LTS release, Jenkins requires Java 11 or newer. Therefore, you can no longer run Maven projects with JDKs 1.6, 1.7 and 1.8. The minimum version is now Java 11.
To resolve this, you may:
Create a Freestyle project and use Invoke top-level Maven targets to invoke Maven, or create a Jenkins Pipeline project. In both cases, using an older JDK will be possible.
Use JDK 11 but set source and target version to the older Java version. I haven't tried that though, and I believe this option may cause other trouble.
For further information, see also Jenkins requires Java 11 or newer and Maven Builds Fails After Upgrade

jFuzzyLogic FCL editor doesn't work on Ubuntu Eclipse

I'm working on a project with jFuzzyLogic and so I need to create rules with .fcl files.
Eclipse has a plugin for FCL editor with auto-completion and it works fine on Windows, but since I don't have any Windows on my machine I have installed it on Ubuntu 14.04LTE.
When I try to edit FCL file with Eclipse on Ubuntu I get this kind of error:
Unable to create editor ID net.sf.jFuzzyLogic.Fcl: The editor class could not be instantiated. This usually indicates a missing no-arg constructor or that the editor's class name was mistyped in plugin.xml.
Here is an Exception Stack Trace:
java.lang.RuntimeException: Failed to create injector for net.sf.jFuzzyLogic.Fcl
at net.sf.jFuzzyLogic.ui.internal.FclActivator.createInjector(FclActivator.java:71)
at net.sf.jFuzzyLogic.ui.internal.FclActivator.getInjector(FclActivator.java:55)
at net.sf.jFuzzyLogic.ui.FclExecutableExtensionFactory.getInjector(FclExecutableExtensionFactory.java:26)
at org.eclipse.xtext.ui.guice.AbstractGuiceAwareExecutableExtensionFactory.create(AbstractGuiceAwareExecutableExtensionFactory.java:49)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:262)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:268)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:264)
at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:235)
at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:875)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:315)
at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:493)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103)
at org.eclipse.ui.internal.PartStack.add(PartStack.java:479)
at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112)
at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63)
at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:225)
at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:213)
at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:808)
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:707)
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:666)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2946)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2854)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2846)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2797)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2793)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2777)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2760)
at org.eclipse.ui.ide.IDE.openEditorOnFileStore(IDE.java:1253)
at org.eclipse.ui.internal.ide.actions.OpenLocalFileAction.run(OpenLocalFileAction.java:107)
at org.eclipse.ui.internal.ide.actions.OpenLocalFileAction.run(OpenLocalFileAction.java:76)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1276)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3562)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3186)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: com.google.inject.CreationException: Guice creation errors:
1) No implementation for org.eclipse.xtext.ui.editor.preferences.IPreferenceStoreInitializer annotated with #com.google.inject.name.Named(value=builderPreferenceInitializer) was bound.
at net.sf.jFuzzyLogic.ui.AbstractFclUiModule.configureBuilderPreferenceStoreInitializer(AbstractFclUiModule.java:78)
2) No implementation for org.eclipse.xtext.ui.editor.preferences.IPreferenceStoreInitializer annotated with #com.google.inject.name.Named(value=RefactoringPreferences) was bound.
at net.sf.jFuzzyLogic.ui.AbstractFclUiModule.configureIPreferenceStoreInitializer(AbstractFclUiModule.java:143)
3) Could not find a suitable constructor in org.eclipse.xtext.ui.refactoring.impl.DefaultRenameStrategy. Classes must have either one (and only one) constructor annotated with #Inject or a zero-argument constructor that is not private.
at org.eclipse.xtext.ui.refactoring.impl.DefaultRenameStrategy.class(DefaultRenameStrategy.java:96)
at org.eclipse.xtext.service.MethodBasedModule.configure(MethodBasedModule.java:55)
3 errors
at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:354)
at com.google.inject.InjectorBuilder.initializeStatically(InjectorBuilder.java:152)
at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:105)
at com.google.inject.Guice.createInjector(Guice.java:92)
at com.google.inject.Guice.createInjector(Guice.java:69)
at com.google.inject.Guice.createInjector(Guice.java:59)
at net.sf.jFuzzyLogic.ui.internal.FclActivator.createInjector(FclActivator.java:67)
... 72 more
And here is Session Data:
eclipse.buildId=debbuild
java.version=1.7.0_55
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86_64

Just in case somebody comes across the same bug, I solved it by installing Eclipse Luna manually (not from Ubuntu repositories) and then installing plugin from scratch. Worked fine.