1  public class GradeExam {
  2    /** Main method */
  3    public static void main(String[] args) {
  4      // Students' answers to the questions
  5      char[][] answers = {
  6        {'A', 'B', 'A', 'C', 'C', 'D', 'E', 'E', 'A', 'D'},
  7        {'D', 'B', 'A', 'B', 'C', 'A', 'E', 'E', 'A', 'D'},
  8        {'E', 'D', 'D', 'A', 'C', 'B', 'E', 'E', 'A', 'D'},
  9        {'C', 'B', 'A', 'E', 'D', 'C', 'E', 'E', 'A', 'D'},
 10        {'A', 'B', 'D', 'C', 'C', 'D', 'E', 'E', 'A', 'D'},
 11        {'B', 'B', 'E', 'C', 'C', 'D', 'E', 'E', 'A', 'D'},
 12        {'B', 'B', 'A', 'C', 'C', 'D', 'E', 'E', 'A', 'D'},
 13        {'E', 'B', 'E', 'C', 'C', 'D', 'E', 'E', 'A', 'D'}};
 14  
 15      // Key to the questions
 16      char[] keys = {'D', 'B', 'D', 'C', 'C', 'D', 'A', 'E', 'A', 'D'};
 17  
 18      // Grade all answers
 19      for (int i = 0; i < answers.length; i++) {
 20        // Grade one student
 21        int correctCount = 0;
 22        for (int j = 0; j < answers[i].length; j++) {
 23          if (answers[i][j] == keys[j])
 24            correctCount++;
 25        }
 26  
 27        System.out.println("Student " + i + "'s correct count is " +
 28          correctCount);
 29      }
 30    }
 31  }