Variables in Java

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Variables in Java ?

Variables are the basic requirements in any program be it Java,Python or JavaScript .It is the basic unit of storage. It acts as a container and is used to hold data values. The values held by the variable can be changed during the execution of the program. Every variable is assigned a data type. Variable, in simpler terms, is a name given to a memory location. 




  • Variable Declaration and Initialization

          A variable is declared by specifying the following parameters:

·        Datatype: The type of data that is stored in the variable.
·        Variable name: The unique name given to the variable.
·        Value: The initial value stored in the variable.
 





Variables naming convention in java

  •      Variables naming cannot contain white spaces,  for example: int num ber = 100; is invalid because the variable name has space in it.
  •      Variable name can begin with special characters such as $ and _
  •       As per the java coding standards the variable name should begin with a lower case letter, 
  •     for example int number ; For lengthy variables names that has more than one words do it like this: int smallNumber; int bigNumber; (start the second word with capital letter).
  •      Variable names are case sensitive in Java.


 

Comments

Vishwas Katiyar said…
Greate ..... .. keep going ...
May 16, 2020 at 8:44 PM
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