Data Types

Data type is a keyword used to  identify type of  data. Data types in java are defined as specifiers that allocates space and type of values stored in the variable/identifiers. it has rich set of data type and are divided into two types. They are :
1. Primitive Data Types
2. Non-Primitive Data Types

1. Primitive Data Type: They are 8 primitive data types and are divided into 3 types:
   1. Numeric data type: It is used to represent numbers. And it is again divided into two types:
   a) Integral data type: To represent whole numbers. They are
   i. byte
   ii. short
   iii. int
   iv. long
   b) Floating point data types: To represent real number. They are
   i. float
   ii. double
   
   2. char data type: It is used to represent characters.
   
   3. boolean data type: It is used represent logical values.
2. Non-Primitive Data Type: These data types are user defined i.e., program contain their definition . It includes classes, array and interface string etc.,