Pattern selector

Most relevant patterns first. Most helpful ones displayed. Click here to show all.

  1. ArrayList.addAll() has thrown a NullPointerException
    Java Runtime
    16
    54
    16

Your stack trace compared to the selected pattern

Jump to solutionsExpand frames
java.lang.NullPointerException
    at java.util.ArrayList.addAll(ArrayList.java:474)
    at org.jivesoftware.messenger.muc.spi.IQOwnerHandler.handleItemsElement(IQOwnerHandler.java:261)
    at org.jivesoftware.messenger.muc.spi.IQOwnerHandler.handleIQ(IQOwnerHandler.java:98)
    at org.jivesoftware.messenger.admin.muc_002droom_002daffiliations_jsp._jspService(muc_002droom_002daffiliations_jsp.java:141)
22 frames hidden

External results for this pattern (10)

  1. No message found for this stack trace.
    Show stack trace
  2. vgandravia GitHub1 month ago
    null
    Show stack trace
  3. willuk2010via GitHub1 month ago
    null
    Show stack trace
  4. panovvitalikvia GitHub1 month ago
    An error occurred while executing doInBackground()
    Show stack trace
  5. fcornelivia GitHub2 months ago
    No message found for this stack trace.
    Show stack trace
  6. bhylakvia GitHub2 months ago
    No message found for this stack trace.
    Show stack trace
  7. StarSparkvia GitHub2 months ago
    Attempt to invoke interface method 'java.lang.Object[] java.util.Collection.toArray()' on a null object reference
    Show stack trace
  8. hadimvia GitHub3 months ago
    No message found for this stack trace.
    Show stack trace