Final answer:
The default visibility, for instance, variables without explicit visibility modifiers is 'package-private', not 'public'.
Step-by-step explanation:
The default visibility given to instance variables that don't include explicit visibility modifiers is 'package-private', also known as default visibility.
Java provides four explicit visibility modifiers for instance variables:
- public: The variable can be accessed by other classes.
- private: The variable can only be accessed within the same class.
- protected: The variable can be accessed within the same package or by subclasses.
- default or 'package-private': The variable can be accessed within the same package.
Therefore, the statement in the question is False. The default visibility, for instance, variables without explicit visibility modifiers is not 'public' but rather 'package-private'.