src/main/java/dev/model/Student.java

@@ -46,7 +46,7 @@ public class Student {
     @Override
     public boolean equals(Object obj) {
         if (obj == null) return false;
-        
+
         if (this == obj) return true;
 
         if (this.getClass() != obj.getClass()) return false;

src/main/java/dev/service/StudentManager.java

@@ -10,34 +10,28 @@ public class StudentManager {
     private final ArrayList<Student> students = new ArrayList<>();
 
     public void addStudents(ArrayList<Student> newStudents) {
-
-        // TODO:
-
-        // Merge students
-
-        // Hint:
-        // addAll()
-
+        if (newStudents != null && !newStudents.isEmpty()) {
+            students.addAll(newStudents);
+        }
     }
 
     public Student searchStudent(int id) {
-
-        // TODO:
-
-        // Loop through students
-
-        // Compare IDs
+        for (Student student: students) {
+            if (student.getId() == id) {
+                return student;
+            }
+        }
 
         return null;
     }
 
     public boolean removeStudent(int id) {
+        Student s = searchStudent(id);
 
-        // TODO:
-
-        // Find student
-
-        // Remove student
+        if (s != null) {
+            students.remove(s);
+            return true;
+        }
 
         return false;
     }

src/main/java/dev/thread/StudentLoader.java

@@ -24,35 +24,27 @@ public class StudentLoader extends Thread {
 
     @Override
     public void run() {
-
-        // TODO:
-
-        /*
-        Example line:
-
-        1001,Aryan,Computer Science,3.7
-         */
-
         for (String line : lines) {
+            try {
+                String[] parts = line.split(",");
 
-            // TODO:
-            // split line
+                if(parts.length == 4) {
+                    int id = Integer.parseInt(parts[0].trim());
+                    String name = parts[1].trim();
+                    String major = parts[2].trim();
+                    double gpa = Double.parseDouble(parts[3].trim());
 
-            // TODO:
-            // read values
-
-            // TODO:
-            // create Student
-
-            // TODO:
-            // add to students list
+                    Student student = new Student(id,name,major,gpa);
 
+                    students.add(student);
+                }
+            } catch (Exception e) {
+                System.out.println(e.getMessage());
+            }
         }
-
     }
 
     public ArrayList<Student> getStudents() {
-
         return students;
     }