DATA TYPES IN JAVA

The data type of a variable is an attribute that tells what kind of data that a value can have.
Java programming supports eight primitive types under the following four categories which are as under:

1. Integers:The datatype integer is used to store the numbers other than real point numbers.

                  Under integer sub types are:                 

• byte: The size of byte is 1 byte.
• int:   The size of int is 4 bytes
• long: The size of long is 8 bytes.
• short:The size of short is 2 bytes.     

                 
     2. Real Numbers:
Real point numbers are also called as floating point numbers and hence needs to be stored in a data type different from integers

                  Under real number type, sub types are: 

                

                             

• float:   The size of float is 4 bytes.
• double: The size of double is  8 bytes         

        3. Characters:

                    
 Character datatype stores the characters and special Characters.The size of character data type   is 2 bytes.

       4.Boolean:
                   Boolean means that it can either store 0 or 1.The size of Boolean is 1 byte