Where to check if an object is null or not?

Question

Where do you check if an object that you are passing to a method is null or not?

Should an object need to be tested before calling a method? or within the method tha

Answer 1

PrintAge should be a method on Person, not a static taking a Person as parameter. No check needed.

Checking for null values makes the code unnecessarily complex. Structure your code so as to limit (or eliminate) the occasions where null is a possible value, and you'll have much fewer checks to write.