how many primitive data types are declared there in java code example

Example 1: primitive data types in java

/* 
	Java Data Types
There 2 Types Of Data Types In Java
1) Primitive -> byte, char, short, int, long, float, double and boolean.
2) Non-primitive -> (All Classes) -> String, Arrays etc.

Type	Size	Stores
byte	1 byte	whole numbers from -128 to 127
short	2 bytes	"" -32,768 to 32,767
int	    4 bytes	"" -2,147,483,648 to 2,147,483,647
long	8 bytes	""-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
float	4 bytes	fractional numbers; for storing 6 to 7 decimal digits
double	8 bytes	fractional numbers; "" 15 ""
boolean	1 bit	true or false values
char	2 bytes	single character/letter or ASCII values
*/

Example 2: non primitive data types in java

Non-Primitive Data Types: These data types are not actually defined by 
the programming language but are created by the programmer. They are 
also called “reference variables” or “object references” since they 
refer to a memory location which stores the data.
  
All classes are non-primitive data types.
Example : Object, String, Integer, Boolean, etc...