I'm attempting to do this problem
[ISBN checksum (10 points). Write a program ISBNChecksum. java that takes a 9-digit int as a command-line argument and displays the checksum digit according to the following rules:
Multiply the first digit by 10, the second by 9, the third by 8, and so on, down to the ninth digit by 2.
Add the values together.
Divide the sum by 11. What is the remainder?
If the remainder is 0, the checksum is 0; otherwise, subtract the remainder from 11 to get the checksum digit.
If the checksum that you come up with is 10, then X is used as the checksum digit!

As an example, the checksum digit corresponding to 020131452 is 5 since 5 is the only value of x between 0 and 10 for which10*0 + 9*2 + 8*0 + 7*1 + 6*3 + 5*1 + 4*4 + 3*5 + 2*2 + 1*x is a multiple of 11.

Hint 1: to extract the rightmost digit of a number use the modulus operator.
Hint 2: to remove the rightmost digit of a number use the integer division by 10
Hint 3: for full credit use a loop to compute the sum

Assume the input value used to test your program is a 9-digit positive integer. Also assume that the input is a valid ISBN number without the checksum digit.]

And So far have this,

public static void main (String[] args) {

int ISBN = Integer. parseInt(args[0]);
int TotalSum = Integer. parseInt(args[1]);
int Count = Integer. parseInt(args[2]);
int NumRemainder = Integer. parseInt(args[3]);
int CheckSum = Integer. parseInt(args[4]);
int IncrementVariable = Integer. parseInt(args[5]);

TotalSum = 0;
IncrementVariable = 2;
Count = 1;
NumRemainder = 0;
CheckSum = 0;

while (Count < 10);{
NumRemainder = ISBN%10;
CheckSum = NumRemainder * IncrementVariable;
TotalSum = CheckSum + TotalSum;
ISBN = ISBN / 10;
IncrementVariable += 1;
Count += 1;
}
NumRemainder = TotalSum % 11;
if (NumRemainder == 0){
CheckSum = 0;}
else if (NumRemainder == 10){
CheckSum = 'X';
System. out. println(CheckSum);
}
else if (NumRemainder >= 1 && NumRemainder <= 9){
CheckSum = 11 - NumRemainder;
System. out. println(CheckSum);}
else {
System. out. println(CheckSum);
}

}
}

can someone please give me pointers on what I'm doing wrong?
Thanks