Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via GitHub by mskd12
, 1 year ago
loader (instance of org/glassfish/web/loader/WebappClassLoader): attempted duplicate class definition for name: "org/glassfish/web/loader/JdbcLeakPrevention"
via Java.net JIRA by seaunicornislit, 1 year ago
loader (instance of org/glassfish/web/loader/WebappClassLoader): attempted duplicate class definition for name: "org/glassfish/web/loader/JdbcLeakPrevention"
via Jenkins JIRA by Edwin Floyd, 1 year ago
loader constraint violation: loader (instance of hudson/ClassicPluginStrategy$AntClassLoader2) previously initiated loading for a different type with name "org/eclipse/jgit/transport/UploadPack"
via Jenkins JIRA by Edwin Floyd, 1 year ago
loader constraint violation: loader (instance of hudson/ClassicPluginStrategy$AntClassLoader2) previously initiated loading for a different type with name "org/eclipse/jgit/transport/UploadPack"
via GitHub by eugeneaiz
, 2 years ago
loader (instance of org/mule/module/launcher/MuleApplicationClassLoader): attempted duplicate class definition for name: "com/esotericsoftware/kryo/serializers/UnsafeCachedFieldFactory"
via MuleSoft JIRA by Mariano De Sousa Bispo, 1 year ago
loader constraint violation: loader (instance of org/mule/runtime/module/artifact/classloader/MuleArtifactClassLoader) previously initiated loading for a different type with name "groovy/lang/MetaClass"
java.lang.LinkageError: loader (instance of  org/glassfish/web/loader/WebappClassLoader): attempted  duplicate class definition for name: "org/glassfish/web/loader/JdbcLeakPrevention"	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(Unknown Source)	at org.glassfish.web.loader.WebappClassLoader.clearReferencesJdbc(WebappClassLoader.java:2121)	at org.glassfish.web.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:2056)	at org.glassfish.web.loader.WebappClassLoader.stop(WebappClassLoader.java:1960)	at org.glassfish.web.loader.WebappClassLoader.preDestroy(WebappClassLoader.java:1929)	at org.glassfish.internal.data.ApplicationInfo.clean(ApplicationInfo.java:465)	at com.sun.enterprise.v3.server.ApplicationLifecycle.unload(ApplicationLifecycle.java:1071)	at com.sun.enterprise.v3.server.ApplicationLifecycle.undeploy(ApplicationLifecycle.java:1099)	at org.glassfish.deployment.admin.UndeployCommand.execute(UndeployCommand.java:412)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:539)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:535)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Unknown Source)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:534)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:565)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:557)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Unknown Source)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:556)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1464)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1300(CommandRunnerImpl.java:109)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1846)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1722)	at org.glassfish.deployment.admin.DeployCommand.handleRedeploy(DeployCommand.java:724)	at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:365)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:539)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:535)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Unknown Source)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:534)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:565)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:557)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Unknown Source)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:556)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1464)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1300(CommandRunnerImpl.java:109)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1846)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1722)	at org.glassfish.admin.rest.utils.ResourceUtil.runCommand(ResourceUtil.java:253)	at org.glassfish.admin.rest.utils.ResourceUtil.runCommand(ResourceUtil.java:231)	at org.glassfish.admin.rest.utils.ResourceUtil.runCommand(ResourceUtil.java:275)	at org.glassfish.admin.rest.resources.TemplateListOfResource.createResource(TemplateListOfResource.java:133)	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.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:309)	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:292)	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1139)	at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:375)	at org.glassfish.admin.rest.adapter.RestAdapter$2.service(RestAdapter.java:316)	at org.glassfish.admin.rest.adapter.RestAdapter.service(RestAdapter.java:179)	at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)	at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)	at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)	at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)	at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)	at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)	at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)	at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)	at java.lang.Thread.run(Unknown Source)