Develop Reference

java.lang.NoClassDefFoundError |

My java program is running fine on my Eclipse IDE, but when am trying to run the same ".java" file using my command prompt it is showing me an error as shown in the fig.
Error: Could not find or load main class EulerianPathDirectedEdgesAdjacencyList
Caused by: java.lang.NoClassDefFoundError: com/euler/EulerianPathDirectedEdgesAdjacencyList (wrong name: EulerianPathDirectedEdgesAdjacencyList)
While am running the same code in my Eclipse IDE its working fine!
Please let me know, how to solve this.
Thanks!

Try running the command : java com.euler.EulerianPathDirectedEdgesAdjacencyList from the same directory where class file got created after running the previous javac command

Intellij Checkstyle gives error NoClassDefFoundError

I have Intellij 2017.2.3 and Checkstyle-IDEA 5.10.0 running on my Ubuntu 17 dekstop. When i try to add a checkstyle for my Java project (at Settings->Other settings->Checkstyle) I get this error message:
java.lang.NoClassDefFoundError: org/apache/commons/collections/FastHashMap
at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:963)
at org.apache.commons.beanutils.BeanUtilsBean.copyProperty(BeanUtilsBean.java:391)
at com.puppycrawl.tools.checkstyle.api.AutomaticBean.tryCopyProperty(AutomaticBean.java:217)
at com.puppycrawl.tools.checkstyle.api.AutomaticBean.contextualize(AutomaticBean.java:249)
at com.puppycrawl.tools.checkstyle.Checker.setupChild(Checker.java:455)
at com.puppycrawl.tools.checkstyle.api.AutomaticBean.configure(AutomaticBean.java:186)
at org.infernus.idea.checkstyle.service.cmd.OpCreateChecker.execute(OpCreateChecker.java:58)
at org.infernus.idea.checkstyle.service.cmd.OpCreateChecker.execute(OpCreateChecker.java:26)
at org.infernus.idea.checkstyle.service.CheckstyleActionsImpl.executeCommand(CheckstyleActionsImpl.java:126)
at org.infernus.idea.checkstyle.service.CheckstyleActionsImpl.createChecker(CheckstyleActionsImpl.java:56)
at org.infernus.idea.checkstyle.service.CheckstyleActionsImpl.createChecker(CheckstyleActionsImpl.java:47)
at org.infernus.idea.checkstyle.checker.CheckerFactoryWorker.run(CheckerFactoryWorker.java:44)
Is it familiar for anyone?

I got the same issue while migrating the project from WAS 8 to WAS Liberty.
I did copying the jar commons-collections.jar in to the server location /servers/<server_name>/lib/global and resolved it.
So try to place the jar at IntelliJ local server.
java.lang.NoClassDefFoundError: org.apache.commons.collections.FastHashMap
at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:963)
at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:935)
at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:823)
at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:431)
at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252)

Webservice client in JAVA with CFX3.0, works in eclipse not as exported JAR

I am using CFX3.0.1 to create a webService-client in JAVA using Eclipse.
The client works in eclipse. I run it as a JAVA application. But when I export as a runnable JAR, it fails with following error:
Exception in thread "main" java.lang.NullPointerException
at org.apache.cxf.wsdl11.WSDLServiceFactory.<init>(WSDLServiceFactory.java:85)
at org.apache.cxf.jaxws.ServiceImpl.initializePorts(ServiceImpl.java:218)
at org.apache.cxf.jaxws.ServiceImpl.initialize(ServiceImpl.java:161)
at org.apache.cxf.jaxws.ServiceImpl.<init>(ServiceImpl.java:129)
at org.apache.cxf.jaxws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:99)
at javax.xml.ws.Service.<init>(Unknown Source)
at org.featuretracking.wsclient.Service1.<init>(Service1.java:43)
at org.featuretracking.wsclient.IService1_BasicHttpBindingIService1_Client.main(IService1_BasicHttpBindingIService1_Client.java:50)
I am using default build chain in Eclipse, no Maven.
Can some one please tell me how I can make the JAR work.

Eclipse Error: no jogl in java.library.path

So I'm quite new to eclipse (first week of actually trying to use it to develop stuff.) and I tried to import an example project from http://unfoldingmaps.org/ and upon trying to compile their test project I'm greeted with the error:
Eclipse Error: Exception in thread "Animation Thread" java.lang.UnsatisfiedLinkError: no jogl in java.library.path
Right now my $path sys var looks like this:
C:\csvn\Python25\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\SourceGear\Common\DiffMerge\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\MySQL\MySQL Server 6.0\bin; %JAVA_HOME%;%ANT_HOME%\bin
Is there something that I'm missing? Jogl.jar is in the project but it seems like the project is just skipping over stuff.. help?

It seems that your application requires some sort of native library, you need to specify the parameter -Djava.library.path=/path/to/libs on the VM args field on eclipse.

acm.jar ECLIPSE on Linux Problem

I created a new project and a new class in eclipse in my ubuntu machine to write the simple Hello World program. It works fine as long as i write the main method and use System.out.println to print my "Hello World". but i want to use the acm.jar package so I imported it to my project and tried to extend the ConsoleProgram class in acm.jar but once i write the public void run() method and try to run it i get some error
i know that i have imported acm.jar successfully because eclipse suggested the rest of the import when i was typing import acm.program.*;
here is the results i get:
Exception in thread "main" java.lang.NoClassDefFoundError: sun.applet.AppletViewer
at gnu.java.lang.MainThread.run(libgcj.so.90)
Caused by: java.lang.ClassNotFoundException: sun.applet.AppletViewer not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/bilm3z/workspace/xbSampleProject1/bin/,file:/home/bilm3z/workspace/acm.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.90)
at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at java.lang.ClassLoader.loadClass(libgcj.so.90)
at gnu.java.lang.MainThread.run(libgcj.so.90)
here is a snapshot of the situation:
http://www.mypicx.com/12302009/situation1/

It follows from your stack trace that you're using a GCJ JVM. Try installing the Sun JVM - there are instructions here. (Note that you might have to enable different repositories for this, and note the update-java-alternatives command.)
After you install the Sun JVM, update your Eclipse preferences according to Bozho's answer, so that your Eclipse uses the correct JVM.

That's strange. Try Right click on your project > Build path > Configure built path > libraries, remove the JRE / JDK from there (if it exists), and add it anew - Add library > JRE System Library