maxxBlue- Student Management System

src/main/java/students/jordaneldridge/maxxblue/Instructor.java

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+package students.jordaneldridge.maxxblue;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Instructor extends Person {
+    private String department;
+    private List<Student> assignedStudents;
+
+    public Instructor(String id, String firstName, String lastName, String email, String department) {
+        super(id, firstName, lastName, email);
+        this.department = department;
+        this.assignedStudents = new ArrayList<>();
+    }
+
+    public String getDepartment() {
+        return department;
+    }
+
+    public void createAnnouncement(String message) {
+        System.out.println("[Announcement from " + getFullName() + "]: " + message);
+    }
+
+    public void addStudent(Student student) {
+        assignedStudents.add(student);
+    }
+
+    public void printRoster() {
+        System.out.println(getFullName() + "'s Roster:");
+        for (Student s : assignedStudents) {
+            System.out.println("  - " + s.getFullName()
+                    + " | Grade Level: " + s.getGradeLevel()
+                    + " | GPA: " + s.getGpa());
+        }
+    }
+
+    @Override
+    public String getSummary() {
+        return "[Instructor] " + getFullName() + " | Department: " + department;
+    }
+}

src/main/java/students/jordaneldridge/maxxblue/Main.java

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+package students.jordaneldridge.maxxblue;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        // Students
+        Student jordan = new Student("S1", "Jordan", "Smith", "jordan@school.edu", 2, 3.8);
+        Student marcus = new Student("S2", "Marcus", "Brown", "marcus@school.edu", 1, 2.9);
+
+        // Instructor
+        Instructor rivera = new Instructor("I1", "Dr.", "Rivera", "rivera@school.edu", "Computer Science");
+
+        // Assign roster
+        rivera.addStudent(jordan);
+        rivera.addStudent(marcus);
+
+
+        rivera.printRoster();
+
+        List<Person> people = new ArrayList<>();
+        people.add(jordan);
+        people.add(marcus);
+        people.add(rivera);
+
+        System.out.println();
+        for (Person p : people) {
+            // Polymorphism: calls the correct overridden getSummary()
+            System.out.println(p.getSummary());
+        }
+
+        System.out.println();
+
+        // Stretch goal usage
+        School school = new School();
+        school.addStudent(jordan);
+        school.addStudent(marcus);
+        school.addInstructor(rivera);
+
+        school.printDirectory();
+
+        System.out.println();
+        rivera.createAnnouncement("Quiz on Friday. Study inheritance and overriding!");
+    }
+}

src/main/java/students/jordaneldridge/maxxblue/Person.java

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+package students.jordaneldridge.maxxblue;
+
+
+public abstract class Person {
+    private String id;
+    private String firstName;
+    private String lastName;
+    private String email;
+
+    public Person(String id, String firstName, String lastName, String email) {
+        this.id = id;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.email = email;
+    }
+
+    // Getters
+    public String getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    //  shared method
+    public String getFullName() {
+        return firstName + " " + lastName;
+    }
+
+    //abstract so subclasses must override
+    public abstract String getSummary();
+}

src/main/java/students/jordaneldridge/maxxblue/School.java

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+package students.jordaneldridge.maxxblue;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class School {
+    private List<Student> students;
+    private List<Instructor> instructors;
+
+    public School() {
+        this.students = new ArrayList<>();
+        this.instructors = new ArrayList<>();
+    }
+
+    public void addStudent(Student student) {
+        students.add(student);
+    }
+
+    public void addInstructor(Instructor instructor) {
+        instructors.add(instructor);
+    }
+
+    public void printDirectory() {
+        System.out.println("=== School Directory ===");
+
+        System.out.println("Students:");
+        for (Student s : students) {
+            System.out.println("  - " + s.getSummary());
+        }
+
+        System.out.println("Instructors:");
+        for (Instructor i : instructors) {
+            System.out.println("  - " + i.getSummary());
+        }
+    }
+}

src/main/java/students/jordaneldridge/maxxblue/Student.java

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+package students.jordaneldridge.maxxblue;
+
+public class Student extends Person {
+    private int gradeLevel;
+    private double gpa;
+
+    public Student(String id, String firstName, String lastName, String email, int gradeLevel, double gpa) {
+        super(id, firstName, lastName, email);
+        this.gradeLevel = gradeLevel;
+        this.gpa = gpa;
+    }
+
+    public int getGradeLevel() {
+        return gradeLevel;
+    }
+
+    public double getGpa() {
+        return gpa;
+    }
+
+    public boolean isOnHonorRoll() {
+        return gpa >= 3.5;
+    }
+
+    @Override
+    public String getSummary() {
+        String honorRoll = isOnHonorRoll() ? "Yes" : "No";
+        return "[Student] " + getFullName()
+                + " | Grade Level: " + gradeLevel
+                + " | GPA: " + gpa
+                + " | Honor Roll: " + honorRoll;
+    }
+}