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

Samebug tips

  1. ,

    Thrown when an application is trying to use or access an object whose reference equals to null but if you are getting no message, try using the option -XX:-OmitStackTraceInFastThrow.

Solutions on the web

via Stack Overflow by Kevin
, 1 year ago
via Coderanch by B Law, 1 year ago
This exception has no message.
via GitHub by yunus89
, 1 year ago
This exception has no message.
via GitHub by yunus89
, 1 year ago
This exception has no message.
via roller-dev by jason mayer, 1 week ago
This exception has no message.
java.lang.NullPointerException: 	at java.io.Reader.(Reader.java:78)	at java.io.InputStreamReader.(InputStreamReader.java:72)	at org.wso2.carbon.mediator.datamapper.engine.input.readers.JSONInputReader.readFromInputStream(JSONInputReader.java:76)	at org.wso2.carbon.mediator.datamapper.engine.input.readers.JSONInputReader.read(JSONInputReader.java:59)	at org.wso2.carbon.mediator.datamapper.engine.input.InputBuilder.buildInputModel(InputBuilder.java:59)	at org.wso2.carbon.mediator.datamapper.engine.core.mapper.MappingHandler.doMap(MappingHandler.java:67)	at org.wso2.carbon.mediator.datamapper.DataMapperMediator.transform(DataMapperMediator.java:306)	at org.wso2.carbon.mediator.datamapper.DataMapperMediator.mediate(DataMapperMediator.java:256)	at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:95)	at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:57)	at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158)	at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.completeAggregate(AggregateMediator.java:447)	at org.apache.synapse.mediators.eip.aggregator.AggregateMediator.mediate(AggregateMediator.java:330)	at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:95)	at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:57)	at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158)	at org.apache.synapse.rest.Resource.process(Resource.java:325)	at org.apache.synapse.rest.API.process(API.java:338)	at org.apache.synapse.rest.RESTRequestHandler.apiProcess(RESTRequestHandler.java:125)	at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:101)	at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:56)	at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:300)	at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:554)	at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:188)	at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)	at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:255)	at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)