ARRAYS - Java Programming: From Problem Analysis to Program Design - page 588

grade = courseGrade(list); //calculate and store
//the grade in grade

}

//Method to calculate the grade
//Postcondition: The grade is calculated and
// returned.
public char courseGrade( double ... list)
{

double sum = 0;
double average = 0;

for ( double num : list)
sum = sum + num;

//sum the test scores

if (list.length != 0) //find the average
average = sum / list.length;

if (average >= 90) //determine the grade

return 'A';
else if (average >= 80)
return 'B';
else if (average > 70)
return 'C';
else if (average > 60)
return 'D';

else

return 'F';

}

//Method to return student's name, test scores,
//and grades as a string.
//Postcondition: The string consisting of the first
// name, last name, followed by the
// test scores, and the course grade is
// constructed and returned.
public String toString()
{

String str;

str = String.format("%-10s %-10s ", firstName,
lastName);

for ( double score : testScores)
str = str + String.format("%7.2f", score);

str = str + " " + grade;

return str;

}

}