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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gayathri
Hi, I need help to solve the problem.
Divya
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?
Vittal
Thanks, it’s working
Praful Deshmukh
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
Biranchi
Thanks Lokesh! I was struggling for the jars version mismatch.
Ravi
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
Lokesh Gupta
Have you tried the solution suggested in post?
Ariff
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 Gupta
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.
abhi
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 Gupta
Problem solved or still facing issue after trying the fix provided in post??
Simon
Hi I need help!!!!!! My problem is
I see this for the first time in my life!! Can you help me please?
Lokesh Gupta
Check if you configured something like this: https://stackoverflow.com/questions/5714053/how-can-we-redirect-a-java-program-console-output-to-multiple-files