Identifier In Java :
-used for identification purpose.
-name in java program is called identifier.
- It can be class name, Method name ,variable name.
Example :
class CollegeManagement{
public static void main(String[] args){
String collegeName="RECOEM";
}
}
In above program , identifiers are :
1.name of the class -> CollegeManagement
2.name of method -> main
3.name of class -> String
4.name of array -> args
5.name of variable -> collegeName
Rules for defining Identifier :
-allowed characters in Java Idenfier :
a to z
A to Z
0 to 9
$
_
NOTE
-identifier will never start with number.
-reserved words we cant use as identifiers, but we can used as predefined class name or interface name as Identifier ,but it is not good practice.
-Java identifiers are case - sensitive , java is a case sensitive programming language.
Example :
String studentName="Swapnil V";
String STUDENTNAME="Neel";
here studentName and STUDENTNAME are two different identifiers.