course.java

Java程序设计技巧与开发实例附书源代码。

public class Course
{  private String name;
   private String grade;

   public Course(String _name)
   {  this(_name, "no grade"); }
   public Course(String _name, String _grade)
   {  name = _name;
      grade = _grade;
   }
   public void showCourse()
   {  System.out.println(name + " (Grade: " + grade+")"); }
   public double getNumericGrade()
   {  String GRADES[] = {"A+", "A", "A-", "B+", "B", "B-",
                         "C+", "C", "C-", "D+", "D", "D-", "F"};
      double VALUES[] = {4.00, 4.0, 3.75, 3.25, 3., 2.75,
                         2.25, 2.0, 1.75, 1.25, 1.0, 0.75, 0};
      for (int i = 0; i < GRADES.length; i++)
         if (grade.equals(GRADES[i]))
            return VALUES[i];
      return -1.0;
   }
}