FAQ - why does my code throw a null pointer exception - common reason #1 Redeclaration (Short Version) from code refactoring means Watch Video
Preview(s): Play Video: (Note: The default playback of the video is HD VERSION. If your browser is buffering the video slowly, please play the REGULAR MP4 VERSION or Open The Video below for better experience. Thank you!)
Your browser does not support playing the video.Please download the video!
Description: A common reason for Null Pointer Exceptions in Java is a variable redeclaration instead of instantiation. Learn what that means, how to avoid it, and how to spot it, in this presentation.nn# FAQ - why does my code throw a null pointer exception - common reason #1 Redeclarationnn- Using `@BeforeClass` or `@Before` can setup data for use in testsn- Any 'variables' we instantiate need to be 'fields' rather than variablesn- We want to instantiate them in the setup method rather than redeclare themnn