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. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

Solutions on the web

via Apache's JIRA Issue Tracker by Koji Kawamura, 1 year ago
java.util.concurrent.ExecutionException: java.lang.NullPointerException
via nabble.com by Unknown author, 1 year ago
java.util.concurrent.ExecutionException: java.lang.AssertionError: assertion failed
java.lang.NullPointerException: null	at java.util.Hashtable.put(Hashtable.java:459)	at java.util.Properties.setProperty(Properties.java:166)	at org.apache.nifi.processors.kafka.GetKafka.createConsumers(GetKafka.java:238)	at org.apache.nifi.processors.kafka.GetKafka$1.call(GetKafka.java:355)	at org.apache.nifi.processors.kafka.GetKafka$1.call(GetKafka.java:352)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)