changes in class Student

src/CourseRegistrationStarter/Student.java

@@ -1,12 +1,15 @@
 package CourseRegistrationStarter;
 import java.util.ArrayList;
 
-public class Student {
+public class Student
+{
     private String name;
     private String studentId;
     private ArrayList<Course> registeredCourses;
+    private int limit = 15;
 
-    public Student(String name, String studentId) {
+    public Student(String name, String studentId)
+    {
         this.name = name;
         this.studentId = studentId;
         this.registeredCourses = new ArrayList<>();
@@ -20,20 +23,45 @@ public class Student {
         return studentId;
     }
 
-    public boolean addCourse(Course c) {
-        // TODO: Register the student in the course if capacity allows
-        // Return true if registration was successful, otherwise false
+    public boolean addCourse(Course c)
+    {
+        if(registeredCourses.contains(c) || c.getCapacity() == 0)
+        {
+            return false;
+        }
+        else if(registeredCourses.size() <= limit && c.getCapacity() > 0)
+        {
+            c.reduceCapacity();
+            registeredCourses.add(c);
+            return true;
+        }
         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
+    public boolean dropCourse(Course c)
+    {
+        if(registeredCourses.contains(c))
+        {
+            registeredCourses.remove(c);
+            c.increaseCapacity();
+            return true;
+        }
         return false;
     }
 
-    public void showRegisteredCourses() {
-        // TODO: Print all registered courses
+    public void showRegisteredCourses()
+    {
+        if(registeredCourses.size() > 0)
+        {
+            System.out.println("Registered Courses : ");
+            for(int i = 0; i < registeredCourses.size(); i++) {
+                Course c = registeredCourses.get(i);
+                System.out.println(c.getCourseName());
+            }
+        }
+        else
+        {
+            System.out.println("NO COURSES !");
+        }
     }
 }