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ClassDefNoFound even though the jar that I'm dependent on is in my jar

I'm writing a LabyMod addon to create a shop bot for minecraft clients.
I've well succeeded to do so, at least in my dev-environement in eclipse. Now I wanted to publish it, and to do this, LabyMod provides a possibility to use gradle for wrapping up all stuff that is relevant to the addon in the addon jar, that can then simply be dragged into the "addons"-Folder.
However, when I do this, the plugin didn't appear in the plugin overview, and I found out that there was an error when loading the plugin (Class def not found). I use okhttp3 to send some web requests to my verification server, so I just added it in eclipse as dependent jar, but they were not included when gradle built the jar. So I wasn't very surprised with that, and looked for a possibility to add my dependencies to the jar directly.
I found out in the commments of the predefined build.gradle to simply put all files in a predefined "libs"-folder which seemed to be fine. Here's the issue: Although the jars definitely are a part of the jar, the classdefnotfound-thing still happenes. Here's what I mean.
JD-GUI says of my jar:
So, the jars definitely are there, and jd-gui can find them in the code as well, since you can click on the imports and get taken to the place where okhttp3 defined the imported class.
Here's however the error that I get, when trying to load the addon:
catching
java.lang.NoClassDefFoundError: okhttp3/OkHttpClient$Builder
at borg.locutus.grieferbot.utils.NetworkUtilities.sendGet(NetworkUtilities.java:70)
at borg.locutus.grieferbot.utils.NetworkUtilities.getPermissionLevelOfPlayer(NetworkUtilities.java:51)
at borg.locutus.grieferbot.GrieferBOTAddon.initPermissionLevel(GrieferBOTAddon.java:50)
at borg.locutus.grieferbot.GrieferBOTAddon.onEnable(GrieferBOTAddon.java:43)
at net.labymod.addon.AddonLoader.enableAddon(AddonLoader.java:349)
at net.labymod.addon.AddonLoader.enableAddons(AddonLoader.java:309)
at net.labymod.main.LabyMod.init(LabyMod.java:256)
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:498)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:560)
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:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
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:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:737)
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:310)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:495)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
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:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: okhttp3.OkHttpClient$Builder
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 44 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 46 more
How can I make my jar find the missing dependencies?

You can't just put the dependency jars into the main jar. You need to shade the dependencies into them.

Can VisualVM profile Java 9 applications?

Hello I am trying to optimise my application, I've had JProfiler installed for the last 2 weeks but the trial period is up and I can't afford the megabucks.
I want to use VisualVM but I can't get it to work.
I installed version 1.4 from their website but when I try and open my application for profiling it does nothing. (Other available processes do open, like the intellij ide)
The error reported is as follows:
java.lang.IllegalArgumentException: Unexpected composite type for ThreadInfo
at sun.management.ThreadInfoCompositeData.validateCompositeData(ThreadInfoCompositeData.java:372)
at sun.management.ThreadInfoCompositeData.getInstance(ThreadInfoCompositeData.java:68)
at java.lang.management.ThreadInfo.<init>(ThreadInfo.java:263)
at java.lang.management.ThreadInfo.from(ThreadInfo.java:794)
Caused: java.lang.reflect.InvocationTargetException
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:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory$CompositeBuilderViaFrom.fromCompositeData(DefaultMXBeanMappingFactory.java:1018)
Caused: java.io.InvalidObjectException: Failed to invoke from(CompositeData)
at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory.invalidObjectException(DefaultMXBeanMappingFactory.java:1457)
at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory$CompositeBuilderViaFrom.fromCompositeData(DefaultMXBeanMappingFactory.java:1021)
at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory$CompositeMapping.fromNonNullOpenValue(DefaultMXBeanMappingFactory.java:919)
at com.sun.jmx.mbeanserver.DefaultMXBeanMappingFactory$NonNullMXBeanMapping.fromOpenValue(DefaultMXBeanMappingFactory.java:133)
at com.sun.jmx.mbeanserver.ConvertingMethod.fromOpenReturnValue(ConvertingMethod.java:131)
at com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:168)
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:258)
Caused: java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy14.getThreadInfo(Unknown Source)
at com.sun.tools.visualvm.jmx.impl.JmxSupport.isReadOnlyConnection(JmxSupport.java:126)
at com.sun.tools.visualvm.jmx.impl.JmxModelImpl.isTakeThreadDumpSupported(JmxModelImpl.java:369)
at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.resolveThreads(ApplicationThreadsViewProvider.java:85)
at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:49)
at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:45)
at com.sun.tools.visualvm.core.ui.DataSourceViewsManager.getViews(DataSourceViewsManager.java:136)
at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.openWindowAndAddView(DataSourceWindowManager.java:206) at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.access$000(DataSourceWindowManager.java:50)
at com.sun.tools.visualvm.core.ui.DataSourceWindowManager$2.run(DataSourceWindowManager.java:117)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
It looks like something to do with incompatible Java types? My application was compiled and run with JDK9. I've noticed VisualVM isn't even included in the java download any more. Is there a way around this?
Thanks.

Exception in thread "main" java.lang.NullPointerException while running mahout

Hi i am new to Apache mahout, i am getting error while running "classify-20newsgroups.sh" this example which automatically gets dataset from internet.
Error trace:
hduser#raj-Lenovo-G550:/usr/local/mahout/examples$ bin/classify-20newsgroups.sh
Please select a number to choose the corresponding task to run
1. cnaivebayes
2. naivebayes
3. sgd
4. clean -- cleans up the work area in /tmp/mahout-work-hduser
Enter your choice : 3
ok. You chose 3 and we'll use sgd
creating work directory at /tmp/mahout-work-hduser
Downloading 20news-bydate
bin/classify-20newsgroups.sh: line 68: curl: command not found
Extracting...
tar (child): ../20news-bydate.tar.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now
Training on /tmp/mahout-work-hduser/20news-bydate/20news-bydate-train/
MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
Running on hadoop, using /usr/local/hadoop-1.2.1/bin/hadoop and HADOOP_CONF_DIR=/usr/local/hadoop-1.2.1/conf
MAHOUT-JOB: /usr/local/mahout/mahout-examples-0.9-job.jar
14/08/06 14:07:53 WARN driver.MahoutDriver: No org.apache.mahout.classifier.sgd.TrainNewsGroups.props found on classpath, will use command-line arguments only
Exception in thread "main" java.lang.NullPointerException
at org.apache.mahout.classifier.sgd.TrainNewsGroups.main(TrainNewsGroups.java:106)
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.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:160)
Any body pls help here
Edited :
i tried
using sudo apt-get install curl but got
hduser#raj-Lenovo-G550:/usr/local/mahout/examples$ bin/classify-20newsgroups.sh
Please select a number to choose the corresponding task to run
1. cnaivebayes
2. naivebayes
3. sgd
4. clean -- cleans up the work area in /tmp/mahout-work-hduser
Enter your choice : 3
ok. You chose 3 and we'll use sgd
creating work directory at /tmp/mahout-work-hduser
Training on /tmp/mahout-work-hduser/20news-bydate/20news-bydate-train/
MAHOUT_LOCAL is not set; adding HADOOP_CONF_DIR to classpath.
Running on hadoop, using /usr/local/hadoop-1.2.1/bin/hadoop and HADOOP_CONF_DIR=/usr/local/hadoop-1.2.1/conf/
MAHOUT-JOB: /usr/local/mahout/mahout-examples-0.9-job.jar
14/08/06 17:06:41 WARN driver.MahoutDriver: No org.apache.mahout.classifier.sgd.TrainNewsGroups.props found on classpath, will use command-line arguments only
Exception in thread "main" java.lang.NullPointerException
at org.apache.mahout.classifier.sgd.TrainNewsGroups.main(TrainNewsGroups.java:106)
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.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)
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.apache.hadoop.util.RunJar.main(RunJar.java:160)

The problem here is that can't download the corpus 20newsgroups with the curl command because it doesn't find in the operating system, look at the following line error : bin/classify-20newsgroups.sh: line 68: curl: command not found.

No such method error only in raspberry pi

fed up with raspberry pi.....
i have created a javaFX application from windows 7 using netbeans 7.3.1 , jdk 1.7 ..
application has included some external jar including javafx-dialogs-0.0.3,jaybird etc..
its all works fine with windows 7,ubuntu and centOS
Then i tried to run the same application jar from command line in raspberry pi..
but it gives Exception like "noSuchMethoderror " and exiting the application..
what may be the issue ???
am using same jar during comple and run time..
here is full stack
Exception in Application start method
java.lang.reflect.InvocationTargetException
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:483)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:367)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:305)
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:483)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:894)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:56)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:158)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NoSuchMethodError: com.sun.javafx.css.StyleManager.getPseudoclassMask(Ljava/lang/String;)J
at javafx.scene.control.Dialogs$FXDialog$RootPane.<clinit>(Dialogs.java:1310)
at javafx.scene.control.Dialogs$FXDialog.<init>(Dialogs.java:1131)
at javafx.scene.control.Dialogs$FXDialog.<init>(Dialogs.java:1088)
at javafx.scene.control.Dialogs$DialogTemplate.<init>(Dialogs.java:616)
at javafx.scene.control.Dialogs.showSimpleContentDialog(Dialogs.java:494)
at javafx.scene.control.Dialogs.showInformationDialog(Dialogs.java:266)
at displayshelftry.Utilities.propertySettings(Utilities.java:325)
at displayshelftry.DisplayShelfTry.run(DisplayShelfTry.java:356)
at displayshelftry.DisplayShelfTry.start(DisplayShelfTry.java:1150)
at com.sun.javafx.application.LauncherImpl$8.run(LauncherImpl.java:837)
at com.sun.javafx.application.PlatformImpl$7.run(PlatformImpl.java:331)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:297)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:294)
at com.sun.glass.ui.lens.LensApplication$RunnableEvent.dispatch(LensApplication.java:182)
at com.sun.glass.ui.lens.LensApplication._runLoop(LensApplication.java:861)
at com.sun.glass.ui.lens.LensApplication.access$1700(LensApplication.java:58)
at com.sun.glass.ui.lens.LensApplication$4.run(LensApplication.java:914)
... 1 more
thanks...

Try building you app with jdk8. jdk8 usually should run jdk7 built jars as well, but it's not yet released and rasberry pi was supported only since jdk8.
Also official pi vs javafx page claims that not all demos will work on pi (note it's not yet released product): https://wiki.openjdk.java.net/display/OpenJFX/OpenJFX+on+the+Raspberry+Pi
So you may want to try BrickBreaker instead of DisplayShelf :)

Unable to convert coredump to hprof

I have a core.31690 file which I want to convert to hprof. I tried: jmap -dump:format=b,file=mydump.hprof /usr/bin/java core.31690 but I got the following:
Attaching to core core.31690 from executable /usr/bin/java, please wait...
Exception in thread "main" 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 sun.tools.jmap.JMap.runTool(JMap.java:179)
at sun.tools.jmap.JMap.main(JMap.java:110)
Caused by: sun.jvm.hotspot.debugger.UnmappedAddressException
at sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
at sun.jvm.hotspot.debugger.PageCache.getData(PageCache.java:63)
at sun.jvm.hotspot.debugger.DebuggerBase.readBytes(DebuggerBase.java:217)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:482)
at sun.jvm.hotspot.debugger.linux.LinuxAddress.getCIntegerAt(LinuxAddress.java:69)
at sun.jvm.hotspot.utilities.CStringUtilities.getString(CStringUtilities.java:61)
at sun.jvm.hotspot.HotSpotTypeDataBase.readVMTypes(HotSpotTypeDataBase.java:128)
at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:85)
at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:568)
at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:494)
at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:348)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:169)
at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77)
... 6 more
I tried looking online but couldn't find anything. Any pointers?