java.lang.NullPointerException INFO: Successful at adding String to Deque that is set to null. (by checking first for null and instantiating Deque implementation) ...

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 ...

Marker interface in Java e.g. Serializable, Clonnable and Remote is used to indicate something to compiler or JVM, that the class which is implementing any of these would have to be treated with some ...

In fact in order to support correctly java null semantics, it's more ticky than just modifying get and set behavior. Especially, if your proto object gets serialized, all fields with default value are ...

Null dereference is a commonly occurring defect in Java programs, and many static-analysis tools identify such defects. However, most of the existing tools perform a limited interprocedural analysis.