I'm using source connector for my dynamo table. There are no problems until I delete an item from the table, and this is what I got when I delete the item: 2017-05-01 14:12:28,609] ERROR Task dynamodb ...

A null pointer is a reference variable that does not point to any object in memory. It is a special value that indicates the absence of an object. You can assign null to any reference variable, such ...

While Java is one of the most in-demand and widely used programming languages in the world, it is not without its detractors. Java is not a particularly beginner-friendly language and it is rife with ...

A NullPointerException occurs when we try to access a method or field on an object reference that is null. It is a runtime exception thrown by the JVM. To avoid it, we should initialize objects ...

* GoodSink: Do not check for null after the object has been dereferenced * BadSink : Check for null after an object has already been dereferenced ...

Abstract: Null pointer exceptions are common software faults, but they are dangerous and can cause a program to crash if they occur. In addition, it is hard to find them by simply running test cases.

Abstract: In this experience paper, we share our experience on enhancing automatic unit test generation to more effectively find Java null pointer exceptions (NPEs). NPEs are among the most common and ...