DRAFT
NoFieldlessObjects
Incorrect
Objects without instance variables can't exist
Correct
CorrectionHere is what's right.
Here is what's right.
Wrong. Even if an object has no fields, it still is an object and it still is allocated on the heap. It may be very small (because it has no fields), but it still exists and it still uses some memory (e.g., at least it has some meta information that determines what class the object has).
The identity of an object can be useful, even if the object contains no state otherwise.
Language
Java