matin mortazavi / i did my Assignment + bonus

src/CourseRegistrationStarter/Student.java

@@ -23,17 +23,46 @@ public class Student {
     public boolean addCourse(Course c) {
         // TODO: Register the student in the course if capacity allows
         // Return true if registration was successful, otherwise false
-        return false;
+        if (registeredCourses.size()<= 10) {
+            if (c.reduceCapacity()) {
+                registeredCourses.add(c);
+                return true;
+            } else {
+
+                return false;
+            }
+        }
+        else
+        {
+            return false ;
+        }
     }
 
     public boolean dropCourse(Course c) {
         // TODO: Remove the course from the student's list
         // Restore the course capacity if removal was successful
         // Return true if the course was dropped, otherwise false
-        return false;
+        int ind = registeredCourses.indexOf(c) ;
+        if (ind != -1 )
+        {
+            registeredCourses.remove(ind) ;
+            c.increaseCapacity();
+            return true ;
+        }
+        else {
+            return false;
+        }
     }
 
     public void showRegisteredCourses() {
         // TODO: Print all registered courses
+        for (Course item : registeredCourses)
+        {
+            System.out.print("course name : ");
+            System.out.print(item.getCourseName());
+            System.out.print("  , course code");
+            System.out.print(item.getCourseCode());
+
+        }
     }
 }