There's something wrong with this code. I must implement the TestScores class, but I know I am missing something.

/**
     TestScores class
 */

import java.util.Scanner; // Needed for the Scanner class

// For use in CodeMate, the TestScores class is not declared to be
// public. Normally the class header would be:
//
//  public class TestScores
//
// You should ignore this change.

class TestScores
{
    double test1;
    double test2;
    double test3;

    public void setTest1(double t1)
    {
        test1 = t1;
    }

    public double getTest1() 
    {
        return test1;
    }

    public void setTest2(double t2)
    {
        test2 = t2;
    }

    public double getTest2() 
    {
        return test2;
    }

    public void setTest3(double t3)
    {
        test3 = t3;
    }

    public double getTest3() 
    {
        return test3;
    }

    public double getAverageScore(test1, test2, test3)
    {
        getAverageScore = (test1 + test2 + test3) / 3;
        return getAverageScore;
    }


}

/**
     Chapter 6, Programming Challenge 6
     TestScoresAverage class
 */

public class TestScoresAverage
{
   public static void main(String[] args)
   {
      double test1;        // First test score
      double test2;        // Second test score
      double test3;        // Third test score  

      // Create a Scanner object for keyboard input.
      Scanner keyboard = new Scanner(System.in);

      // Get the first test score.
      System.out.print("Enter test score #1: ");
      test1 = keyboard.nextDouble();

      // Get the second test score.
      System.out.print("Enter test score #2: ");
      test2 = keyboard.nextDouble();

      // Get the third test score.
      System.out.print("Enter test score #3: ");
      test3 = keyboard.nextDouble();

      // Create a TestScores object.      
      TestScores scores = new TestScores(test1, test2, test3);

      // Display the average test score.
      System.out.println("The average test score is " + scores.getAverageScore());
   }
}

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