every letter in a java keyword is in lowercase

Question

I am new to java programming . I wrote a code in java programming language to start my projcet of learning java:  

 

public class Main {
  public static void main(String[] argv){
     int 2count, h-l, a/b, 

  }
}

But it gives me errors like :

exception in thread "main" java.lang.Error: Unresolved compilation problems
Syntax error on token "2", delete this token
Syntax error on token "h", = expected after this token
Syntax error on token ",", . expected
Syntax error on token ",", ;expected
at Main.main(Main.java:3)

Why am I getting this errors can anyone help me out to solve this?

Answer 1

every letter in a java keyword are uses as java identifiers.
an indentifer must be begin with a lower case letter , a dollar sign($),or an underscore(_);subsequent characters may be upper case letters, dollar signs, underscores
or digits.

Some Example are :

fobar      //legal
Myclass    //legal
$a         //legal
3_a        //illegal : starts with a digit
!thevalue  //illegal : bad 1st char