Using Java Define a Rubric class that extends the GradedActivity class shown below. The Rubric class should determine the grade a student receives for a chapter lab. Using the following points:...

Using Java Define a Rubric class that extends the GradedActivity class shown below. The Rubric class should determine the grade a student receives for a chapter lab. Using the following points:

Algorithm: 20 points

Variables: 5 points

Formulas: 5 points

Test Data: 15 points

UML: 20 points

Code: 35 points

Create exception classes for 2 error conditions. You determine which errors for the exceptions. Demonstrate the class in a simple program.

GradedActivity

public class GradedActivity {

   private double score; // holds the score

   public void setScore (double s) {
       score=s;
   } //end method for setting the score

   public double getScore() {
       return score;
   }// end method to return the score

   public char getGrade() { // return a letter grade determined by the scores listed below
       char letterGrade;

       if (score >= 90)
           letterGrade = 'A';
       else if (score >=80)
           letterGrade = 'B';
       else if (score >=70)
           letterGrade= 'C';
       else if (score >=60)
           letterGrade = 'D';
       else
           letterGrade = 'F';

       return letterGrade;
   } // end get grade method

}// end Graded Activity