01. How many data types are in JAVA?
Java has two categories of data types:


Primitive Data Types (8 total): byte, short, int, long, float, double, char, boolean
Non-Primitive (Reference) Data Types: Classes, Interfaces, Arrays, Enums, etc.


02. What is the default value of Char in the data type?
The default value of a char is \u0000 (null...