Grade.java

// Grade.java -- A Java program illustrating "if"

public final class Grade  {

   private static final int[] CUT_OFFS = {60, 70, 80, 90};

   public static void main (final String[] args)  {
      final int score = Integer.parseInt (args[0]);
      final char grade;  // "blank final"

      if (score >= CUT_OFFS[3]) {
         grade = 'A';
      } else if (score >= CUT_OFFS[2]) {
         grade = 'B';
      } else if (score >= CUT_OFFS[1]) {
         grade = 'C';
      } else if (score >= CUT_OFFS[0]) {
         grade = 'D';
      } else {
         grade = 'F';
      }

      // N.B.  All cases must be handled or analysis would yield
      // an error: "Variable 'grade' may not have been initialized."

      System.out.printf ("The grade is %c.%n", grade);
   }
}