Learn what causes null pointer exceptions in Java, how to identify them, and how to fix them with simple techniques and best practices. Also, learn how to test and learn more about them.

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 ...

Hi, After upgrading some libraries, the subscribe () method will throw Null Pointer exception when minifyEnabled is set to true. If I remove minifyEnabled then the code is working fine.