Only I start learning Java and do not understand why I can’t call the Zerotoone method to variable i. Does not appear in the Ide context menu. What is the error here?

Public Class Method {
  Public Static Void Main (String [] Args) {
    int i = 0;
    ** i.zerotoone (); **
  }
  Private Int Zerotoone (Int A) {
    if (a == 0) {
      a = 1;
    }
    RETURN A;
  }
}

Answer 1, Authority 100%

Zerotoone (i); – this is how the challenge is done. In Java, a straight line of calls, which is indicated by the parameter, is transmitted by the argument.

and since the Main method is static, then call Zerotoone you need at the object: New Method (). Zerotoone (i); . Or make a static zerotoone method>(Private Static Int Zerotoone (int a) ) and call directly, and not through the object.