Very beginner level code help needed.

This code should display "incorrect entry" if a entry is not <=100 or =999. I think my code is in the wrong area but can't figure it our where it goes.

Code java:

 
import java.util.Scanner;
 
public class ModifiedTestScoreApp
{
    public static void main(String[] args)
    {
        // display operational messages
        System.out.println("Please enter test scores that range from 0 to 100.");
        System.out.println("To end the program enter 999.");
 
        System.out.println();  // print a blank line
 
        // initialize variables and create a Scanner object
        double scoreTotal = 0;
        int scoreCount = 0;
        int testScore = 0;
        Scanner sc = new Scanner(System.in);
 
        // get a series of test scores from the user
        while (testScore <= 100)
        {
            // get the input from the user
            System.out.print("Enter score: ");
            testScore = sc.nextInt();
 
            // accumulate score count and score total
            if (testScore <= 100)
            {
                scoreCount = scoreCount + 1;
                scoreTotal = scoreTotal + testScore;
            }
            else if (testScore != 999)
            {
                 System.out.println("Invalid entry, not counted");
            }    
        }
 
        // display the score count, score total, and average score
        double averageScore = scoreTotal / scoreCount;
        String message = "\n"
                + "Score count:   " + scoreCount + "\n"
                + "Score total:   " + scoreTotal + "\n"
                + "Average score: " + averageScore + "\n";
        System.out.println(message);
    }
}