Basics of Java -1 | Pawan Sharma

2011-09-07T07:54:00.000-07:00

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;

Basic Of Programming

Basics of Java -1 | Pawan Sharma