ERROR: NullPointerException encountered while trying to adding String to Deque that is set to null. java.lang.NullPointerException INFO: Successful at adding String to Deque that is set to null ...

Ever come across the null pointer exception in Java? We explain what this error message means, why it happens, and how to avoid the billion-dollar mistake.

site.ycsb.DBException: java.lang.NullPointerException during memcached connection #1420 Closed ...

Hi, I sometimes encounter a NullPointerException using the SmbFile.exists method in version 2.1.2 I can have two different stack traces : java.lang.NullPointerException at jcifs.smb.SmbSessionImpl.