We were nitpicking at this question for a few months and got to a point that had to ask: Why a class that has to have two values can have an instance that points to null? Now that the question is ...

java.lang.ClassCastException: class java.lang.Integer cannot be cast to class java.lang.Boolean (java.lang.Integer and java.lang.Boolean are in module java.base of ...

Here we generate a message based on the user's status. the status is a boolean field. The above code has no problem unless it uses a boxed type- java.lang.Boolean. If the user object has a boxed ...