Exception in thread "main" java.lang.Error: Unresolved compilation problems

Question

Problem:

I am a begginer in java programming language and I have been coding for just some days. To practice my programming I wrote this code in java:

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

  }
}

But It shows me the error message:

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)

Whats is wrong in my code can anyone help me out?

Answer 1

In java programming every letter in a java keyword are used as java identifiers. So 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

I hope this may help you and you understand the thing.

Happy coding.