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 ...

Null pointer exception is an “exception” (error) that is particularly common when programming in Java. For a beginner, this is a confusing and daunting message to receive, but it can be just ...

Base64.Encoder presents several threadsafe instance methods for encoding byte sequences. Passing the null reference to one of the following methods results in java.lang.NullPointerException: ...