[Solved] java.lang.IncompatibleClassChangeError: Implementing class

By Lokesh Gupta | Filed Under: Java Reflection

When you are working with java libraries which internally depends on cglib, then its very normal to encounter the below error:

Exception in thread "main" java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at net.sf.cglib.core.DebuggingClassWriter.toByteArray(DebuggingClassWriter.java:73)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:26)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.(Enhancer.java:69)

This error is due to incompatible version of cglib with additional jar files in you project, such as asm. I encountered it when writing my experiment relted to lazy loading in iBatis.

Solution

Solution is very easy. Just place the suitable version of cglib in your class path.

A correct dependency will look like this:

<dependency>
	<groupId>cglib</groupId>
	<artifactId>cglib</artifactId>
	<version>2.2.2</version>
</dependency>
<dependency>
	<groupId>asm</groupId>
	<artifactId>asm-util</artifactId>
	<version>3.3.1</version>
</dependency>

Happy Learning !!

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About Lokesh Gupta

Founded HowToDoInJava.com in late 2012. I love computers, programming and solving problems everyday. A family guy with fun loving nature. You can find me on Facebook, Twitter and Google Plus.

Feedback, Discussion and Comments

gayathri

July 9, 2018

Hi, I need help to solve the problem.

Jul 09, 2018 6:18:27 PM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:68)
	at com.sun.jersey.api.core.PackagesResourceConfig.init(PackagesResourceConfig.java:110)
	at com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:76)
	at com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:87)
	at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:641)
	at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:619)
	at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:199)
	at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:307)
	at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:470)
	at javax.servlet.GenericServlet.init(GenericServlet.java:158)

Divya

May 30, 2018

Even am also facing the issue while starting of Tomcat 8.5.24 server and received the below error. Can you suggest exact solution for this?

ERROR org.atmosphere.cpr.AtmosphereFramework - Failed to initialize Atmosphere Framework
java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2283)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:811)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1260)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
	at com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:79)
	at com.sun.jersey.api.core.PackagesResourceConfig.init(PackagesResourceConfig.java:104)
	at com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:78)
	at com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:89)
	at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:698)
	at com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:676)
	at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:201)
	at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)
	at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)
	at javax.servlet.GenericServlet.init(GenericServlet.java:158)
	at org.atmosphere.util.AtmosphereFilterChain.init(AtmosphereFilterChain.java:125)
	at org.atmosphere.handler.ReflectorServletProcessor$FilterChainServletWrapper.init(ReflectorServletProcessor.java:294)
	at org.atmosphere.handler.ReflectorServletProcessor.init(ReflectorServletProcessor.java:185)
	at org.atmosphere.cpr.AtmosphereFramework.initAtmosphereHandler(AtmosphereFramework.java:877)
	at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:504)
	at org.atmosphere.cpr.AtmosphereServlet.init(AtmosphereServlet.java:191)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1099)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4931)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5241)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

Vittal
November 25, 2015
Thanks, it’s working
Reply

Praful Deshmukh

October 1, 2015

I am facing the issue while starting of Tomcat 7 server and received the below error. I have tried the suggestion provided by you but it is not working.
Can you please help on priority basis? Thanks

Error:
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [203] milliseconds.
java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818)
	at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1148)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1643)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
	at org.apache.catalina.startup.ContextConfig.checkHandlesTypes(ContextConfig.java:1956)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:1919)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1806)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1765)
	at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1751)
	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1255)
	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:882)
	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5081)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:620)
	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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:303)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:431)

Biranchi
April 7, 2015
Thanks Lokesh! I was struggling for the jars version mismatch.
Reply

Ravi

October 22, 2014

Exception in thread "Thread-29" java.lang.IncompatibleClassChangeError: Implemen
ting class
        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:14
1)
        at org.apache.catalina.loader.WebappClassLoader.findClassInternal(Webapp
ClassLoader.java:2818)
        at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoa
der.java:1159)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1647)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1526)
        at au.com.ezidebit.px.PCIServiceStub.getPolicy(PCIServiceStub.java:2419)

        at au.com.ezidebit.px.PCIServiceStub.populateAxisService(PCIServiceStub.
java:57)
        at au.com.ezidebit.px.PCIServiceStub.(PCIServiceStub.java:204)
        at au.com.ezidebit.px.PCIServiceStub.(PCIServiceStub.java:193)
        at au.com.ezidebit.px.PCIServiceStub.(PCIServiceStub.java:241)
        at au.com.ezidebit.px.PCIServiceStub.(PCIServiceStub.java:233)
        at com.sapienter.jbilling.server.payment.tasks.EzidebitPaymentTask.proce
ss(EzidebitPaymentTask.java:91)
        at com.sapienter.jbilling.server.process.BillingProcessSessionBean.email
AndPayment(BillingProcessSessionBean.java:523)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflecti
on(AopUtils.java:309)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJo
inpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor.in
voke(TransactionInterceptor.java:110)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynami
cAopProxy.java:202)
        at $Proxy98.emailAndPayment(Unknown Source)
        at com.sapienter.jbilling.server.process.BillingProcessSessionBean.proce
ssEntity(BillingProcessSessionBean.java:265)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflecti
on(AopUtils.java:309)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJo
inpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor.in
voke(TransactionInterceptor.java:110)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynami
cAopProxy.java:202)
        at $Proxy98.processEntity(Unknown Source)
        at com.sapienter.jbilling.server.process.BillingProcessSessionBean.proce
ssEntity(BillingProcessSessionBean.java:777)
        at com.sapienter.jbilling.server.process.BillingProcessSessionBean.trigg
er(BillingProcessSessionBean.java:695)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflecti
on(AopUtils.java:309)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJo
inpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor.in
voke(TransactionInterceptor.java:110)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynami
cAopProxy.java:202)
        at $Proxy98.trigger(Unknown Source)
        at com.sapienter.jbilling.server.util.WebServicesSessionSpringBean$1.run
(WebServicesSessionSpringBean.java:2581)
        at java.lang.Thread.run(Thread.java:662)

prasad kottapalli

September 25, 2014

java.lang.IncompatibleClassChangeError
	com.sun.jersey.spi.container.ContainerResponse.getStatus(ContainerResponse.java:571)
	com.sun.jersey.spi.container.ContainerResponse$CommittingOutputStream.commitWrite(ContainerResponse.java:156)
	com.sun.jersey.spi.container.ContainerResponse$CommittingOutputStream.write(ContainerResponse.java:133)
	sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:233)
	sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:303)
	sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:307)
	sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153)
	java.io.OutputStreamWriter.flush(OutputStreamWriter.java:289)
	java.io.BufferedWriter.flush(BufferedWriter.java:265)
	com.sun.jersey.core.util.ReaderWriter.writeToAsString(ReaderWriter.java:191)
	com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider.writeToAsString(AbstractMessageReaderWriterProvider.java:128)
	com.sun.jersey.core.impl.provider.entity.StringProvider.writeTo(StringProvider.java:88)
	com.sun.jersey.core.impl.provider.entity.StringProvider.writeTo(StringProvider.java:58)
	com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:306)
	com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1448)
	com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1360)
	com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1350)
	com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
	com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
	com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

Lokesh
September 25, 2014
Have you tried the solution suggested in post?
Reply

Ariff

May 14, 2014

hi
i chaged a class file which is a part of jar file.
It was compiled and running succesfully in my local but when we deployed from server end it was throwing the below exception.

Exception in thread "main" java.lang.IncompatibleClassChangeError
        at mapfre.trn.saptron.SapCon.getConexion(SapCon.java:745)
        at mapfre.trn.saptron.SapCon.getConexion(SapCon.java:714)
        at mapfre.com.c.GUI.TTextField.lanzaValidacionOracleInterno(TTextField.j
ava:3784)
        at mapfre.com.c.GUI.TTextField.validacionMetodo(TTextField.java:3931)
        at mapfre.com.c.GUI.TTextField.lanzaValidacion(TTextField.java:3140)
        at mapfre.trn.utilidades.JMenuTron.preJmenuTron(JMenuTron.java:87)
        at mapfre.trn.utilidades.JMenuTron.main(JMenuTron.java:73)

Lokesh
May 14, 2014
Can you be specific what change you made? It can be triggered for many reasons such as changing static variable to non-static or vice-versa; declaring a new field which hides any super class field and things like that. Please note that it may trigger even when JVM versions at your local and prod are different.
Reply

abhi

April 30, 2014

I am getting this

INFO: Starting service Catalina
Apr 30, 2014 4:25:05 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.12
java.lang.IncompatibleClassChangeError: Implementing class
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1148)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1643)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(Unknown Source)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1148)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1643)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
    at org.apache.catalina.startup.ContextConfig.checkHandlesTypes(ContextConfig.java:1956)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:1919)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1806)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1765)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1751)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1255)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:882)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:89)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5081)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:774)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1033)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:620)
    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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:303)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:431)

Lokesh
April 30, 2014
Problem solved or still facing issue after trying the fix provided in post??
Reply

Simon

January 13, 2014

Hi I need help!!!!!! My problem is

 [Invalid file specified for console output: C:UsersSimonWorkspacesProjektIt-Kenzahlen]
Exception in thread "main" java.lang.IncompatibleClassChangeError: Implementing class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
	at java.lang.Class.getMethod0(Unknown Source)
	at java.lang.Class.getMethod0(Unknown Source)
	at java.lang.Class.getMethod(Unknown Source)
	at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
	at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

I see this for the first time in my life!! Can you help me please?

Lokesh Gupta
January 13, 2014
Check if you configured something like this: https://stackoverflow.com/questions/5714053/how-can-we-redirect-eclipse-console-output-to-a-file
Reply

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[Solved] java.lang.IncompatibleClassChangeError: Implementing class

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