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 Apereo Issues by Drew Wills, 1 year ago
net.fortuna.ical4j.model.property.Uid cannot be cast to java.lang.Comparable
via Apereo Issues by Drew Wills, 2 years ago
net.fortuna.ical4j.model.property.Uid cannot be cast to java.lang.Comparable
via Atlassian JIRA by Piotr Stefan Stefaniak [Atlassian], 2 years ago
com.atlassian.bamboo.plan.PlanKey cannot be cast to java.lang.Comparable
java.lang.ClassCastException: net.fortuna.ical4j.model.property.Uid cannot be cast to java.lang.Comparable at org.apache.commons.lang.builder.CompareToBuilder.append(CompareToBuilder.java:486) at org.apache.commons.lang.builder.CompareToBuilder.append(CompareToBuilder.java:415) at org.jasig.portlet.calendar.mvc.JsonCalendarEvent.compareTo(JsonCalendarEvent.java:174) at org.jasig.portlet.calendar.mvc.JsonCalendarEvent.compareTo(JsonCalendarEvent.java:36) at java.util.TreeMap.put(TreeMap.java:545) at java.util.TreeSet.add(TreeSet.java:238) at java.util.AbstractCollection.addAll(AbstractCollection.java:305) at java.util.TreeSet.addAll(TreeSet.java:295) at org.jasig.portlet.calendar.mvc.controller.AjaxCalendarController.getEventList(AjaxCalendarController.java:163) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:421) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:136) at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:271) at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.doHandle(AnnotationMethodHandlerAdapter.java:259) at org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter.handleAction(AnnotationMethodHandlerAdapter.java:210) at org.springframework.web.portlet.DispatcherPortlet.doActionService(DispatcherPortlet.java:694) at org.springframework.web.portlet.FrameworkPortlet.processRequest(FrameworkPortlet.java:480) at org.springframework.web.portlet.FrameworkPortlet.processAction(FrameworkPortlet.java:462) at org.apache.pluto.core.PortletServlet.dispatch(PortletServlet.java:218) at org.apache.pluto.core.PortletServlet.doPost(PortletServlet.java:145) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:535) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:472) at org.apache.pluto.core.DefaultPortletInvokerService.invoke(DefaultPortletInvokerService.java:167) at org.apache.pluto.core.DefaultPortletInvokerService.action(DefaultPortletInvokerService.java:85) at org.apache.pluto.core.PortletContainerImpl.doAction(PortletContainerImpl.java:217) at org.jasig.portal.portlet.rendering.PortletRendererImpl.doAction(PortletRendererImpl.java:184) at org.jasig.portal.channels.portlet.SpringPortletChannelImpl.action(SpringPortletChannelImpl.java:261) at org.jasig.portal.channels.portlet.CSpringPortletAdaptor.processAction(CSpringPortletAdaptor.java:155) at org.jasig.portal.ChannelRenderer$Worker.execute(ChannelRenderer.java:524) at org.jasig.portal.utils.threading.BaseTask.run(BaseTask.java:41) at sun.reflect.GeneratedMethodAccessor198.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) at org.springframework.orm.jpa.JpaInterceptor.invoke(JpaInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at org.jasig.portal.$Proxy196.run(Unknown Source) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619)