variables are the basic unit used to store any information in Java.
A variable is identifier that denotes a storage location user to store a data value.
The value in the variable can change your during the programs execution.
Variables are nothing but reserve memory location to store values this means that when I be creative variable be reserve some space in the memory.
Where are the some rules used for the variable naming.
1.Number one variable name must begin with the either a letter are the Dollar sign the underscore character.
2. Variables names are the case sensitive apercase lowercase must be distinguish that the variable ABC is not the same as ABC are ABC.
3. Variable must not begin with a digit.
4. White space is not allowed in variable naming.
5. Variable name should not be a keyword.
6. Variable names can be any length.
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