Variables in Java
Variables :
A variable is an identifier that denotes a storage locating used to store a data value. A variable name can be choosenu by the programmer in a meaning ful way
A variable may take different values at different times during the execution of program.
Declaration of variables :
In java after designing suitable names for variables we must declare them to the compiler.
In the declaration section we define variable name and type of the data variable. A variable must be declare before it is used .
Syntex for Variable Declaration :
Type var 1,var 2,.....var n ;
Ex :
Int count ;
Float salary ;
Char name ;
Assigning a value to a variable :
We can assign a values to a variable in two ways
- By using Assigning statement
- By using a Read statement
Assinging Statement :
It is a simple method of given values to a variable through the assignment statement
Variable name = value
Ex :
int x = 0;
Float pi= 3.14;
Read Statement :
We may also give values to variables interactively through the keyboard using the " Read line () method "
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