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Zookeeper cli not starting

I've installed zookeeper v 3.4.9 on suse using the following package:
http://download.opensuse.org/repositories/home:/nicolasbock:/midokura/openSUSE_Leap_42.2/x86_64/zookeeper-3.4.9-1.1.x86_64.rpm
Starting the server works just fine an the various application that need to connect to it seem to be able to do so just fine, however I'm getting a strange error when I try to start the client:
zkCli.sh -server 127.0.0.1:2181
Error: Could not find or load main class org.apache.zookeeper.ZooKeeperMain
I've tried searching around the internet but the only answer I've come up with is setting the env variable $CLASSPATH. I tried looking what classpath is used internally by the serve starting script and set $CLASSPATH to that but with no results.
I'm running openjvm v 1.8.0_121

I encountered this problem today on Ubuntu 18.04. On zookeper official download page once one follows the given mirror link and chooses stable version, he can see 2 files available. In my case those were:
apache-zookeeper-3.5.5-bin.tar.gz
apache-zookeeper-3.5.5.tar.gz
I chose apache-zookeeper-3.5.5.tar.gz, observed the same problem. Tried to print CLASSPATH as #Jonathan suggested, it was printing different paths however, problem is that the archive file did not contain zookeper jars, probably it is expected that user packages to jar himself as I could find source code in that archive file.
Downloading larger apache-zookeeper-3.5.5-bin.tar.gz archive, extracting and running ./zkCli.sh went smooth as it had everything necessary, so whoever faces the same problem, try that and see if it does the trick for you.

Are you trying on Unix or Windows?
I dont think, you need "-server 127.0.0.1:2181"
Just run zkCli.sh or zkCli.cmd

That is a classpath problem. The zkCli.sh script is attempting to launch a java app where the main class is ZooKeeperMain. However, java cannot find the ZooKeeperMain class file because the classpath being passed to java does not contain a jar file that contains the ZooKeeperMain class.
Typically, the ZooKeeperMain.class file is contained in a jar file at something like $ZOOKEEPER_HOME/zookeeper-3.4.13.jar.
You might trying modifying the zkCli.sh script to print out the classpath just before the script attempts to launch ZooKeeperMain. The classpath should contain the jar that contains the ZooKeeperMain class.
On my Windows 10 machine, my classpath looks like this:
/c/Program Files (x86)/Zookeeper/bin/../build/classes:/c/Program Files (x86)/Zookeeper/bin/../lib/slf4j-log4j12-1.7.25.jar:/c/Program Files (x86)/Zookeeper/bin/../lib/slf4j-api-1.7.25.jar:/c/Program Files (x86)/Zookeeper/bin/../lib/netty-3.10.6.Final.jar:/c/Program Files (x86)/Zookeeper/bin/../lib/log4j-1.2.17.jar:/c/Program Files (x86)/Zookeeper/bin/../lib/jline-0.9.94.jar:/c/Program Files (x86)/Zookeeper/bin/../lib/audience-annotations-0.5.0.jar:/c/Program Files (x86)/Zookeeper/bin/../zookeeper-3.4.12.jar:/c/Program Files (x86)/Zookeeper/bin/../conf:
I encountered a similar errors as yours when launching zkCli.sh from Git Bash for Windows on my Windows 10 machine. My issue was because of the way Git Bash was handling wildcards in the classpath. I initially had some *.jar entries in my classpath that I removed to get zkCli.sh to launch.

Netbeans automatically cloning my jar based packages with their empty 'name equivalents'

I'm new at java programming so i just wanted to try something with ssh understand how it works and so i downloaded a java library which is mentioned in this Stack Overflow answer
. After a lot of failed attempts on importing this library into netbeans. I decided to simply put the files into my src folder. But Netbeans ide duplicating packages in the jar file with their 'name equivalent' empty packages and this prevents me to reach the classes in the packages because the IDE and the Code completion automatically sees the empty packs.I've search the network couldn't find anything about this problem.I 'm ready to share any log files if there are any of them .Here is my screenshot about this situation.
Screenshot Attachment
OS : Linux Mint Rosa
IDE : Netbeans 8.1 Linux version
Edit : I Already looked these topics
How to use .jar files in NetBeans? : At first i've tried this and in this solution netbeans not duplicating any empty packs but when i start to type somethin' like that import sshj.foo.*; Auto Complete can't find anything and also if i try to write the whole path to a specific class which is in an specific pack IDE gave me an error the pack that you're looking for is not exist.Secondly I've tried this
and got the same issue at first try.I can see the packs,classes and other stuff but still can't reach them in a random class which is imported project.
How can I include external jar on my Netbeans project : I've tried this and also this ran perfectly without errors as they said but when i try to reach classes still got the same problem so nothing changed.
How to add a JAR in NetBeans :
In this topic all of the replies explained types of libraries.That's not even related to my problem
How to use classes from .jar files? : I've tried to do explained in this reply also and I've transfered my jar file into a compiled .class extension file and this didn't solve my issue too.

I've just solved that problem with downloading part of the libraries from here.
All libraries need to contain three kind of jars ;
1 . Compiled files containing jar (with extension .class)
2 . Source files containing jar (with extension .java)
3 . Javadoc files containing jar (optional)
Open a project find libraries folder on ide right click and choose Add JAR/Folder specify the directory that contains the compiled files.After importing library hit right click over it and choose edit then specify the source files and javadoc files directories you are ready to roll.

Running .jar File Java 8

I've run .jar files before, but I've encountered a "different" situation, and I'm not sure what to do. I'd appreciate if someone could help me out.
Previously, I programmed with Java 6 and Eclipse Juno exported all my programs to runnable jar files. I'd get a .jar file that I could run by just double clicking on it. The files always looked something like this (note the jar file icon):
Recently, I wrote a program in Java 8 with Eclipse Luna (Release 4.4.0) and exported it to a runnable jar file, and I got something different (note the different file icon):
It no longer runs when I double click it. Instead, my computer uncompresses the jar, as it would a zip file. I tried running it from terminal. I cd'd to the directory and typed
java -jar graph3D.jar
I got the following error message:
Error: Unable to access jarfile graph3D.jar
After uncompressing the jar file, I found a folder named META-INF with the manifest file, MANIFEST.MF in it. It was the only file that seemed to resemble an executable file. Do I have to do something with that?
Could someone explain how I can run the second jar file graph3D.jar? Is it something new with Java 8, or something different about Eclipse Luna, or something else?
(Both programs run fine in Eclipse, by the way)
Thanks for your time and help.
Edit:
Below was the dialog box Eclipse displayed if anyone is interested.
Selecting "Use .jar;.zip" makes the filename "graph3D.jar;.jar;*.zip" .
Selecting "Use .zip" makes the filename "graph3D.jar;*.zip"
Selecting "Cancel" doesn't let you go forward.
You'd have to manually delete the extra file extension.

Somehow when you exported the file, the filters for the file dialog box (*.jar;*.zip) got attached to the filename, which is graph3D.jar;*.jar;*.zip, not graph3D.jar. Java can't find it because it doesn't have the name you supplied. Rename the file and pay close attention next time you export; either you fat-fingered something, or you're triggering a significant bug that needs fixing.

I recommend that you will access the build folder after you've built your project on the IDE under your project folder (in your workspace) and copy both the libraries folder and the .jar and post them wherever you want the program to be "installed", you'll then have an executable jar that should run smoothly without problems, just as I said don't forget the lib folder.

I think there is nothing new in Java 8 related with the running jar, I guess you need to check the the Eclipse export issues, it seems your classes are missing from your second jar file.

Java application will run from CMD and Eclipse but not double click

I've done a search and I can see that a lot of people have had the same problem as me, but none of the solutions have worked for me.
Basically I have a Java Project in Eclipse that is from my old Windows Installation. I've cleaned and rebuilt it because at first it wouldn't compile, but now I have it exported as a Runnable Jar. However, the only way I can get the application to appear is to do java -jar foo.jar in command prompt, or run it in Eclipse. If I double click the JAR in Windows Explorer nothing happens even though I know that Java is associated correctly because other Runnable Jars work.
The project only has the x86 JRE listed in it's Build Path Libraries and all the files listed appear to exist. I'm running Windows 7 HP.
Update: I'm sorry, but I just discovered that no other Runnable Jars are working either. If they are wrapped with launch4j they work though...
Edit: The Runnable Jars that I export from Eclipse do work fine on other systems and load on double click

Some registry values or file associations are probably messed up. Wiping off all of your existing JRE's and JDK's and re-installing them should fix your issue.
Alternatively you may be able to fix it by manually editing the registry value here:
HKLM > SOFTWARE > Classes > jarfile > shell > open > command
My value is
Type: REG_SZ
Data: "C:\Program Files\Java\jre8\bin\javaw.exe" -jar "%1" %*
You'd of course want that path to point to your javaw.exe, and make sure you have the additional arguments.

I was also facing the same problem while i was working with Spring tool suite.
You may use the following steps:-
Right click on project -> export -> Runnable jar file -> (Here,In library handling,there are three options,you have to choose middle one i.e package required library into generated jar.It will package external dependency also).
-In my case, my runnable jar was only executing on my environment i.e on which i have created that JAR. Initially i have selected the first option to create JAR i.e extract required libraries into required JAR.but that was not proper.
It may help you.Let me correct if i am getting wrong.

Since you are able to run the JAR running the command line, I believe your issue is related to which version of Java is set to run the file when it is double-clicked.
To find out which version is successfully running the file from the command line and set it to open JAR files by default:
Open a new command prompt window.
Run echo %path%. Among the path values, you should be able to find one pointing to the bin folder of one of the installed versions of Java. Copy this path somewhere.
Navigate to the JAR file you would like to run. Right click the JAR -> Open with -> Choose default program... -> Browse...
Browse to the path you copied in step 2. (the easiest way is to paste it into the address bar)
Double click javaw.exe.
Click OK.
You should now be able to run the JAR file. Please let me know if your problem persists.

I have made a jar with and keep it on desktop.Then,I double clicked on the jar and it working fine for me.
How I and what I have monintored: In my main class, perform some operation and at the end I add on Thread.sleep(25000); to hold the program for few moments. After every double click on the exported jar I found one new javaw.exe process added in the system process tree. I have noticed it on Task manager. and after 25000ms respective javaw.exe process ended. As my application does not cointain any GUI that's why I have not seen any GUI changes for the respective process. I'm Confident that if my application have some GUI, I will surely get the respective GUI window on every run.
Common mistakes : when we export a project from Eclipse as Runnable JAR file, it is exported with selected Eclipse launch configuration and Eclipse specific launch wrappers. Now if the configuration does not match when you are trying to run it via double-click you will not be able to see the error, If you run it from CMD then surely you will get the error log.
To create standard executable JAR file : To create a standard executable JAR file, you can export as JAR file and specify the main class in last screen of the wizard.
That's working for me fine. I used the same jar from different system and keeping it different location.

VLCJ: Packaged Jar cant load libvlc library when double-clicked but runs perfectly through console

I have a problem with vlc.I am using Eclipse and have made a small application to play video files using vlcj framework.Inside Eclipse everything works fine but when I make jar executable file through Eclipse and double-clicking it (on Windows 64: Tested only on this platform) nothing happens .Then I'm trying using "cd myjarfilepath" and then "java -jar myjarname.jar" and everything works fine.Why this is happening and how to solve it?
Thanks in advance to stackoverflow's community .
Edit:
In Path Location: C:\Users\user\Documents\31\Latest_Win64\Needed I have the following files:
plugins(directory)
axvlc.dll
axvlc.dll.manifest
libvlc.dll
libvlc.dll.manifest
libvlccore.dll
npvlc.dll
npvlc.dll.manifest
vlc.exe.manifest
In my classpath i have included the following files:
jna-3.5.1.jar
platform-3.5.1.jar
vlcj-2.2.0.jar
vlcj-2.2.0-javadoc.jar
vlcj-2.2.0-sources.jar

This sounds like an issue loading the needed VLCj files. Not only are dlls required but the plugin directory is also required. As the execution location moves around from inside eclipse to back in the file system, the path to these files may be getting set incorrectly.
It sounds like you have it working within eclipse. This would indicate to me that what you have should work. Firstly, I would recommend acquiring the VLC dlls, etc., by providing this as a VM argument such as shown below, rather that setting it in code. Remember to comment out any loading you are doing in your code so that you are relying on the command line argument.
-Djna.library.path={Application Location}/lib
example: -Djna.library.path=C:/myapp/lib
Directory Contents:
lib
-- libblc.dll
-- libvlc5.dll
-- {etc}
/plugins
/3dnow
/access
{etc}
If you are still having issues, add the following argument to put VLCj into debug mode. This can be very helpful to determine where things are failing.
-Dvlcj.log=DEBUG
Hope that helps.