In system development using Java, a runtime error that troubles many developers is the 'NullPointerException'. It occurs when you attempt to call a process on a ...

From this article you will learn how to handle optional parameters in Java. We’ll focus on regular method, class constructors with optional fields, and quickly look at bad practices of the discussed ...

After upgrading from SpringBoot 2.0.6 to SpringBoot 2.1.3 it's no longer possible deserialize data object that contain fields from type Optional. Serialization works fine (and looks same as in 2.0.6) ...