From 714be1d6fbe005a3062609127f02f570e54df5d7 Mon Sep 17 00:00:00 2001
From: Arshia <arshia.mahdaviani@gmail.com>
Date: Mon, 6 Jul 2026 21:19:29 +0330
Subject: [PATCH] WS2 bonus concluded!

---
 src/CourseRegistrationStarter/Main.java          | 16 +++++++++++++++-
 .../RegistrationSystem.java                      | 15 +++++++++++++++
 src/CourseRegistrationStarter/Student.java       | 15 ++++++++++++++-
 3 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/src/CourseRegistrationStarter/Main.java b/src/CourseRegistrationStarter/Main.java
index 8f06373..23d54de 100644
--- a/src/CourseRegistrationStarter/Main.java
+++ b/src/CourseRegistrationStarter/Main.java
@@ -1,14 +1,28 @@
 package CourseRegistrationStarter;
-
+import java.util.ArrayList;
 public class Main {
     public static void main(String[] args) {
         // TODO:
         // 1. Create at least 3 courses
+        ArrayList<Course> courses = new ArrayList<Course>();
+        courses.add(new Course("Advanced Programming",  "AP1404", 2));
+        courses.add(new Course("Data Structures",  "DS2201", 1));
+        courses.add(new Course(" Database Systems",  "DB3301", 3));
+
         // 2. Create 1 student
+        Student student = new Student( "Ali","402222001");
+
         // 3. Create a registration system
+        RegistrationSystem regi = new RegistrationSystem();
         // 4. Add courses to the system
+        for(Course c:courses)
+            regi.addCourseToSystem(c);
         // 5. Register the student in some courses
+        student.addCourse(courses.get(0));
+        student.addCourse(courses.get(1));
         // 6. Drop one course
+        student.dropCourse(courses.get(1));
         // 7. Print the final registered course list
+        student.showRegisteredCourses();
     }
 }
diff --git a/src/CourseRegistrationStarter/RegistrationSystem.java b/src/CourseRegistrationStarter/RegistrationSystem.java
index 934f222..6eba453 100644
--- a/src/CourseRegistrationStarter/RegistrationSystem.java
+++ b/src/CourseRegistrationStarter/RegistrationSystem.java
@@ -10,15 +10,30 @@ public class RegistrationSystem {
 
     public void addCourseToSystem(Course c) {
         // TODO: Add the course to the system
+        courses.add(c);
     }
 
     public Course findCourseByCode(String code) {
         // TODO: Search for a course by course code
         // Return the matching course if found, otherwise return null
+        for (Course c:courses)
+            if(c.getCourseCode()==code)
+                return c;
+        return null;
+    }
+
+    public Course searchByCourseName(String name) {
+        // bonus point 3
+        for (Course c:courses)
+            if(c.getCourseName()==name)
+                return c;
         return null;
     }
 
     public void showAllCourses() {
         // TODO: Print all courses in the system
+        for(Course c : courses)
+            System.out.println( c.getCourseName()+" "+c.getCourseCode()+" "+c.getCapacity() );
+
     }
 }
diff --git a/src/CourseRegistrationStarter/Student.java b/src/CourseRegistrationStarter/Student.java
index 02c11d8..e0d31d6 100644
--- a/src/CourseRegistrationStarter/Student.java
+++ b/src/CourseRegistrationStarter/Student.java
@@ -23,17 +23,30 @@ 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;
+        //bonus point1 & bonus point2
+        if(c.getCapacity()<0 || registeredCourses.contains(c)||registeredCourses.size()==3)
+            return false;
+        c.reduceCapacity();
+        registeredCourses.add(c);
+        return true;
+
     }
 
     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
+        if(registeredCourses.contains(c)){
+            registeredCourses.remove(registeredCourses.indexOf(c));
+            c.increaseCapacity();
+            return true;
+        }
         return false;
     }
 
     public void showRegisteredCourses() {
         // TODO: Print all registered courses
+        for(Course c : registeredCourses)
+            System.out.println(c.getCourseName()+" "+c.getCourseCode());
     }
 }
\ No newline at end of file