Basics of Java -1 | Pawan Sharma

When we are study any Programming language the main thing how to Declare any variable so that we can easily work with programming language , so we have to learn firstly data type of programming language . 

So hear i will discuss the some basic data type of the JAVA language.

1. Integer Data Type :- It is used for any numeric value used in program .  It consist finite subset of numerics for.  e.g is may be signed or unsigned .

   
                There  are 4 type of Integers used in JAVA:

• byte:

1 signed byte ( 8-Bit Size), Its range value lie between  -128 to 127.

It is used to save the memory in large array, it can also used in the place of "int" where the variable range is limited.

 Syntax : byte variable_name;  e.g. byte a,b=5;

• short

2 bytes, signed ( 16 -Bit Size), Its range value lie between -32,768 to 32,767.

 We can also use it to save the memory in case of large array size.

 Syntax : short variable_name;  e.g. short a,b=5;

•  int

4 bytes, signed (32 -Bit Size), Its range value lie between  -2,147,483,648 to 2,147,483,647, It is used generally for the default size integer data type .

 Syntax : int variable_name;  e.g. int a,b=5;

• long

8 bytes signed (64 -Bit Size). Its range value lie between  -9,223,372,036,854,775,808 to  9,223,372,036,854,775,807, It is used when the we used wider range value from "int" .

 

 Syntax : long variable_name;  e.g. long a,b=5;