finial

src/CourseRegistrationStarter/Course.java

@@ -10,7 +10,7 @@ public class Course {
         this.courseCode = courseCode;
         this.capacity = capacity;
     }
-
+    // test
     public String getCourseName() {
         return courseName;
     }

src/CourseRegistrationStarter/Main.java

@@ -1,7 +1,13 @@
 package CourseRegistrationStarter;
+import java.lang.reflect.Field ;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Scanner;
 
 public class Main {
-    public static void main(String[] args) {
+    public static void main(String[] args) throws NoSuchFieldException {
         // TODO:
         // 1. Create at least 3 courses
         // 2. Create 1 student
@@ -10,5 +16,77 @@ public class Main {
         // 5. Register the student in some courses
         // 6. Drop one course
         // 7. Print the final registered course list
+        RegistrationSystem reg = new RegistrationSystem() ;
+        Course AP = new Course("ap" , "1404" , 2 );
+        reg.addCourseToSystem(AP) ;
+        Course DS = new Course("DS" , "2201" , 1 );
+        reg.addCourseToSystem(DS);
+        Course DB = new Course("Db" , "3301" , 3 );
+        reg.addCourseToSystem(DB);
+        Map<String, Course> courseMap = new HashMap<>();
+        courseMap.put("AP", AP);
+        courseMap.put("DS", DS);
+        courseMap.put("DB", DB);
+        Student Ali = new Student("ali" , "402222001") ;
+
+        //test
+        Scanner input = new Scanner(System.in) ;
+
+        int x = 0 ;
+        while (x != 6 ) {
+            System.out.println("menu");
+            System.out.println("1) Add course ");
+            System.out.println("2) drop course ");
+            System.out.println("3) show registered courses");
+            System.out.println("4 ) show all courses");
+            System.out.println("5) Show capacities ");
+            System.out.println("6) exit ");
+            System.out.println("enter your choice ");
+            x = input.nextInt() ;
+            input.nextLine() ;
+            if (x == 1 )
+            {
+                System.out.println("Available courses: AP - DS - DB");
+                String y = input.nextLine().trim();
+                Course selected = courseMap.get(y.toUpperCase());
+                if (selected != null) {
+                    Ali.addCourse(selected);
+                } else {
+                    System.out.println("No");
+                }
+
+            }
+
+            else if (x == 2 ) {
+                System.out.println("courses names : AP - DS - DB");
+                String y = input.nextLine().trim();
+                Course selected = courseMap.get(y.toUpperCase());
+                if (selected != null) {
+                    Ali.dropCourse(selected);
+                } else {
+                    System.out.println("No");
+                }
+
+            }
+            else if (x == 3 ) {
+                Ali.showRegisteredCourses();
+
+            }
+            else if (x == 4 )
+            {
+                reg.showAllCourses();
+            } else if (x == 5 ) {
+                reg.showcapacity();
+
+            } else if (x == 6) {
+                continue;
+
+            }
+
+        }
+        }
+
+
+
     }
-}
+

src/CourseRegistrationStarter/RegistrationSystem.java

@@ -1,5 +1,6 @@
 package CourseRegistrationStarter;
 import java.util.ArrayList;
+import java.util.Objects;
 
 public class RegistrationSystem {
     private ArrayList<Course> courses;
@@ -10,15 +11,63 @@ public class RegistrationSystem {
 
     public void addCourseToSystem(Course c) {
         // TODO: Add the course to the system
+        if (courses.contains(c)) {
+            System.out.println("you cant add this course !!");
+        }
+        else
+        {
+            courses.add(c);
+        }
+
     }
+    // test
+
 
     public Course findCourseByCode(String code) {
         // TODO: Search for a course by course code
         // Return the matching course if found, otherwise return null
+        for (Course item : courses)
+        {
+            if (Objects.equals(item.getCourseCode(), code)) {
+
+                return item ;
+            }
+
+        }
+        return null;
+
+    }
+    public Course findCourseByName(String name)
+    {
+        for (Course item : courses)
+        {
+            if (Objects.equals(item.getCourseCode(), name)) {
+
+                return item ;
+            }
+
+        }
         return null;
     }
 
     public void showAllCourses() {
         // TODO: Print all courses in the system
+        for (Course item : courses)
+        {
+            System.out.print("course name : ");
+            System.out.print(item.getCourseName());
+            System.out.print("  , course code");
+            System.out.print(item.getCourseCode());
+            System.out.print("  , course capacity");
+            System.out.print(item.getCapacity());
+
+        }
+    }
+    public void showcapacity(){
+        for (Course item : courses)
+        {
+
+            System.out.println(item.getCapacity());
+        }
     }
 }

src/CourseRegistrationStarter/Student.java

@@ -23,17 +23,47 @@ 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 ;
+            // test
+        }
     }
 
     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());
+
+        }
     }
 }