isbn java

* @author (your name)
 * @version (a version number or a date)
 */
import java.util.*;
public class checkDigit
{
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int value=0;
        int odd=0;
        int even=0;
        int checkDigit=0;
        System.out.println("Enter ISBN");
        String isbn=input.next();
        for (int x=0;(x<isbn.length()-1);x++){
            System.out.println(isbn.charAt(x));
            value=Character.getNumericValue(isbn.charAt(x));
            if (x%2==0){
                odd+=value;
            }
            else{
                even+=value;
            }
           }

even=even*3;
value=(odd+even)%10;
        if (value==0){
            checkDigit=value;
        }else{
               checkDigit=10-value;
}
System.out.println("ISBN check digit is..."+checkDigit);
}
}