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 The OpenNMS Issue Tracker by Ronny Trommer, 1 year ago
via The OpenNMS Issue Tracker by Ronny Trommer, 2 years ago
via GitHub by xmd5a2
, 2 years ago
This exception has no message.
java.lang.UnsupportedOperationException: 	at java.util.Collections$UnmodifiableMap.put(Collections.java:1342)	at org.opennms.core.utils.ParameterMap.getKeyedLong(ParameterMap.java:73)	at org.opennms.core.utils.ParameterMap.getKeyedInteger(ParameterMap.java:94)	at org.opennms.netmgt.poller.monitors.PageSequenceMonitor$PageSequenceMonitorParameters.getIntParm(PageSequenceMonitor.java:641)	at org.opennms.netmgt.poller.monitors.PageSequenceMonitor$PageSequenceMonitorParameters.getRetries(PageSequenceMonitor.java:655)	at org.opennms.netmgt.poller.monitors.PageSequenceMonitor$PageSequenceMonitorParameters.createHttpClient(PageSequenceMonitor.java:669)	at org.opennms.netmgt.poller.monitors.PageSequenceMonitor.poll(PageSequenceMonitor.java:687)	at org.opennms.netmgt.poller.pollables.LatencyStoringServiceMonitorAdaptor.poll(LatencyStoringServiceMonitorAdaptor.java:104)	at org.opennms.netmgt.poller.pollables.PollableServiceConfig.poll(PollableServiceConfig.java:112)	at org.opennms.netmgt.poller.pollables.PollableService.poll(PollableService.java:178)	at org.opennms.netmgt.poller.pollables.PollableElement.poll(PollableElement.java:292)	at org.opennms.netmgt.poller.pollables.PollableContainer$5.run(PollableContainer.java:305)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:263)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:249)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:227)	at org.opennms.netmgt.poller.pollables.PollableContainer.poll(PollableContainer.java:312)	at org.opennms.netmgt.poller.pollables.PollableInterface.poll(PollableInterface.java:205)	at org.opennms.netmgt.poller.pollables.PollableContainer$5.run(PollableContainer.java:305)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:263)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:249)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:227)	at org.opennms.netmgt.poller.pollables.PollableContainer.poll(PollableContainer.java:312)	at org.opennms.netmgt.poller.pollables.PollableNode$3.run(PollableNode.java:303)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:263)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:249)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:227)	at org.opennms.netmgt.poller.pollables.PollableNode.doPoll(PollableNode.java:306)	at org.opennms.netmgt.poller.pollables.PollableElement.doPoll(PollableElement.java:183)	at org.opennms.netmgt.poller.pollables.PollableService.doPoll(PollableService.java:211)	at org.opennms.netmgt.poller.pollables.PollableService$PollRunner.run(PollableService.java:57)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:263)	at org.opennms.netmgt.poller.pollables.PollableElement.withTreeLock(PollableElement.java:249)	at org.opennms.netmgt.poller.pollables.PollableService.doRun(PollableService.java:383)	at org.opennms.netmgt.poller.pollables.PollableService.run(PollableService.java:364)	at org.opennms.netmgt.scheduler.Schedule.run(Schedule.java:135)	at org.opennms.netmgt.scheduler.Schedule$ScheduleEntry.run(Schedule.java:80)	at org.opennms.netmgt.scheduler.LegacyScheduler$1.run(LegacyScheduler.java:203)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at org.opennms.core.concurrent.LogPreservingThreadFactory$3.run(LogPreservingThreadFactory.java:107)	at java.lang.Thread.run(Thread.java:722)