Mason Brown finished Student Management System

src/main/java/masonbrown/Instructor.java

@@ -0,0 +1,42 @@
+package masonbrown;
+
+import java.util.ArrayList;
+
+public class Instructor extends Person {
+
+     private String department;
+    private ArrayList<Student> students;
+
+     public Instructor(int id, String firstName, String lastName,
+                        String email, String department) {
+        super(id, firstName, lastName, email);
+        this.department = department;
+          this.students = new ArrayList<>();
+    }
+
+    public void createAnnouncement(String message) {
+        System.out.println("Announcement from "
+                + getFirstName() + ": " + message);
+    }
+
+     public void addStudent(Student student) {
+        students.add(student);
+    }
+
+      public void printRoster() {
+        System.out.println(getFirstName() + " " + getLastName() + "'s Roster:");
+        for (Student s : students) {
+            System.out.println("  - "
+                    + s.getFirstName() + " "
+                    + s.getLastName()
+                    + " | Grade Level: " + s.getSummary().split("\\|")[1].trim()
+                    + " | GPA: " + s.getSummary().split("\\|")[2].trim());
+        }
+    }
+
+     @Override
+       public String getSummary() {
+          return "[Instructor] " + getFirstName() + " " + getLastName()
+                + " | Department: " + department;
+    }
+}

src/main/java/masonbrown/Main.java

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+package masonbrown;
+
+import java.util.ArrayList;
+
+        public class Main {
+
+       public static void main(String[] args) {
+           ArrayList<Person> people = new ArrayList<>();
+
+
+
+        Student s1 = new Student(1, "Jordan", "Smith",
+                "jordan@email.com", 2, 3.8);
+
+
+            Student s2 = new Student(2, "Marcus", "Brown",
+                "marcus@email.com", 1, 2.9);
+
+            Instructor instructor = new Instructor(3, "Dr.", "Rivera",
+                "rivera@email.com", "Computer Science");
+
+          instructor.addStudent(s1);
+           instructor.addStudent(s2);
+
+         people.add(s1);
+         people.add(s2);
+        people.add(instructor);
+
+        // POLYMORPHISM
+            for (Person p : people) {
+            System.out.println(p.getSummary());
+        }
+
+        System.out.println();
+        instructor.printRoster();
+    }
+}

src/main/java/masonbrown/Person.java

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+package masonbrown;
+
+public abstract class Person {
+
+    private int id;
+    private String firstName;
+     private String lastName;
+    private String email;
+
+        public Person(int id, String firstName, String lastName, String email) {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.email = email;
+    }
+
+    // Getters (encapsulation)
+    public int getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public abstract String getSummary();
+}

src/main/java/masonbrown/Student.java

@@ -0,0 +1,26 @@
+package masonbrown;
+
+public class Student extends Person {
+
+    private int gradeLevel;
+        private double gpa;
+
+        public Student(int id, String firstName, String lastName, String email,
+                   int gradeLevel, double gpa) {
+        super(id, firstName, lastName, email);
+        this.gradeLevel = gradeLevel;
+        this.gpa = gpa;
+    }
+
+         public boolean isOnHonorRoll() {
+        return gpa >= 3.5;
+    }
+
+    @Override
+    public String getSummary() {
+        return "[Student] " + getFirstName() + " " + getLastName()
+                + " | Grade Level: " + gradeLevel
+                + " | GPA: " + gpa
+                + " | Honor Roll: " + (isOnHonorRoll() ? "Yes" : "No");
+    }
+}