diff --git a/src/main/java/com/dtcc/projects/ClassRoom.java b/src/main/java/com/dtcc/projects/ClassRoom.java
new file mode 100644
index 0000000..bae85cf
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/ClassRoom.java
@@ -0,0 +1,22 @@
+package com.dtcc.projects;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class ClassRoom {
+    private static ArrayList<Student> students = JavaAcademy.getStudents();
+    private static ArrayList<Instructor> instructors = DelTech.getInstructors();
+
+    HashMap<String, Person> hash = new HashMap<>();
+
+    HashMap<String, Person> getRoster(){
+        for(int i = 0; i < students.size(); i++){
+            hash.put(students.get(i).getStudentName(),new Person(students.get(i).getStudentName()));
+        }
+        for(int j = 0; j < instructors.size(); j++){
+            hash.put(students.get(j).getStudentName(),new Person(students.get(j).getStudentName()));
+        }
+        return hash;
+    }
+
+}
diff --git a/src/main/java/com/dtcc/projects/DelTech.java b/src/main/java/com/dtcc/projects/DelTech.java
new file mode 100644
index 0000000..69f9775
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/DelTech.java
@@ -0,0 +1,27 @@
+package com.dtcc.projects;
+
+import java.util.ArrayList;
+
+public class DelTech {
+    private static ArrayList<Instructor> instructorList = new ArrayList<>();
+
+    static { // static initializer
+        String[] instructorNames = { "Brian", "Kaleb", "Zan"};
+        for (String instructorName : instructorNames) {
+            Instructor instructor = new Instructor(instructorName);
+            hire(instructor);
+        }
+    }
+    public static void hire(Instructor instructor){
+        instructorList.add(instructor);
+    }
+
+    public static ArrayList<Instructor> getInstructors() {
+        return instructorList;
+    }
+
+    public static void fireStaff(){
+        instructorList.clear();
+    }
+
+}
diff --git a/src/main/java/com/dtcc/projects/Instructor.java b/src/main/java/com/dtcc/projects/Instructor.java
new file mode 100644
index 0000000..5ee48c3
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/Instructor.java
@@ -0,0 +1,34 @@
+package com.dtcc.projects;
+
+public class Instructor extends Person implements Teacher {
+    private String instructorName;
+    private double numberOfHoursPerStudent;
+
+    public Instructor(){
+
+    }
+    public Instructor(String instructorName){
+        this.instructorName = instructorName;
+    }
+
+    public String getInstructorName() {
+        return instructorName;
+    }
+
+    public double getNumberOfHoursPerStudent() {
+        return numberOfHoursPerStudent;
+    }
+
+    @Override
+    public void teach(Student student, double numberOfHours) {
+        student.learn(numberOfHours);
+    }
+
+    @Override
+    public void lecture(Student[] student, double numberOfHours) {
+        for (int i = 0; i < student.length; i++){
+            student[i].learn(numberOfHours);
+        }
+            this.numberOfHoursPerStudent = numberOfHours / student.length;
+    }
+}
diff --git a/src/main/java/com/dtcc/projects/JavaAcademy.java b/src/main/java/com/dtcc/projects/JavaAcademy.java
new file mode 100644
index 0000000..c9e05e7
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/JavaAcademy.java
@@ -0,0 +1,27 @@
+package com.dtcc.projects;
+
+import java.util.ArrayList;
+
+public class JavaAcademy {
+    private static ArrayList<Student> studentList = new ArrayList<>();
+
+    static { // static initializer
+        String[] studentNames = { "Jessica", "Emad", "Cedric", "Lolu", "Apoorva", "Vara", "Craig", "Robert",
+                "Stephen", "Ferdinand", "Charu" };
+        for (String studentName : studentNames) {
+            Student student = new Student(studentName);
+            studentList.add(student);
+        }
+    }
+    public static void recruitStudent(Student student){
+        studentList.add(student);
+    }
+
+    public static ArrayList<Student> getStudents() {
+        return studentList;
+    }
+
+    public static void removeStudents(){
+        studentList.clear();
+    }
+}
diff --git a/src/main/java/com/dtcc/projects/Learner.java b/src/main/java/com/dtcc/projects/Learner.java
new file mode 100644
index 0000000..ba74d3f
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/Learner.java
@@ -0,0 +1,6 @@
+package com.dtcc.projects;
+
+public interface Learner {
+
+    public void  learn(double numberOfHours);
+}
diff --git a/src/main/java/com/dtcc/projects/Person.java b/src/main/java/com/dtcc/projects/Person.java
index ff9713e..f7b54a7 100644
--- a/src/main/java/com/dtcc/projects/Person.java
+++ b/src/main/java/com/dtcc/projects/Person.java
@@ -1,4 +1,19 @@
 package com.dtcc.projects;
 
 public class Person {
+    private String name;
+
+    public Person(){}
+    public Person(String name){
+        this.name = name;
+    }
+
+    public String getName(){
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
 }
diff --git a/src/main/java/com/dtcc/projects/Student.java b/src/main/java/com/dtcc/projects/Student.java
new file mode 100644
index 0000000..16dba22
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/Student.java
@@ -0,0 +1,26 @@
+package com.dtcc.projects;
+
+public class Student extends Person implements Learner{
+    private double totalStudyTime;
+    private String studentName;
+
+    public Student(){
+
+    }
+
+    public Student(String studentName){
+        this.studentName = studentName;
+    }
+
+    public void learn(double numberOfHours) {
+        this.totalStudyTime = this.totalStudyTime + numberOfHours;
+    }
+
+    public double getTotalStudyTime() {
+        return totalStudyTime;
+    }
+
+    public String getStudentName() {
+        return studentName;
+    }
+}
diff --git a/src/main/java/com/dtcc/projects/Teacher.java b/src/main/java/com/dtcc/projects/Teacher.java
new file mode 100644
index 0000000..870d580
--- /dev/null
+++ b/src/main/java/com/dtcc/projects/Teacher.java
@@ -0,0 +1,6 @@
+package com.dtcc.projects;
+
+public interface Teacher {
+    public void teach(Student student, double numberOfHours);
+    public void lecture(Student[] student, double numberOfHours);
+}
diff --git a/src/test/java/com/dtcc/projects/ClassRoomTest.java b/src/test/java/com/dtcc/projects/ClassRoomTest.java
new file mode 100644
index 0000000..9afde0e
--- /dev/null
+++ b/src/test/java/com/dtcc/projects/ClassRoomTest.java
@@ -0,0 +1,29 @@
+package com.dtcc.projects;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class ClassRoomTest extends TestCase {
+        ClassRoom classRoom;
+        HashMap<String, Person> map = new HashMap<>();
+    public void setUp()  {
+        classRoom = new ClassRoom();
+        map = classRoom.getRoster();
+    }
+
+    public void testGetRosterKeys() {
+        Assert.assertEquals(11,map.size());
+        Assert.assertTrue(map.containsKey("Lolu"));
+    }
+
+    public void testGetRosterValues(){
+        for(Map.Entry<String, Person> enter : map.entrySet()){
+            String key = enter.getKey();
+            Person pers = enter.getValue();
+            Assert.assertEquals(key,pers.getName());
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/dtcc/projects/DelTechTest.java b/src/test/java/com/dtcc/projects/DelTechTest.java
new file mode 100644
index 0000000..06681d0
--- /dev/null
+++ b/src/test/java/com/dtcc/projects/DelTechTest.java
@@ -0,0 +1,26 @@
+package com.dtcc.projects;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.util.ArrayList;
+
+public class DelTechTest extends TestCase {
+        DelTech delTech;
+        ArrayList<Instructor> instruct;
+    public void setUp() throws Exception {
+        delTech = new DelTech();
+        DelTech.fireStaff();
+    }
+
+    public void testHire() {
+        String actual = "Vara";
+        DelTech.hire(new Instructor(actual));
+        instruct = DelTech.getInstructors();
+        Assert.assertEquals("Vara",instruct.get(0).getInstructorName());
+    }
+
+    public void testFireStaff() {
+        Assert.assertEquals(0,DelTech.getInstructors().size());
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/dtcc/projects/InstructorTest.java b/src/test/java/com/dtcc/projects/InstructorTest.java
new file mode 100644
index 0000000..58236a7
--- /dev/null
+++ b/src/test/java/com/dtcc/projects/InstructorTest.java
@@ -0,0 +1,35 @@
+package com.dtcc.projects;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+public class InstructorTest extends TestCase {
+
+    private Instructor instructor;
+
+    public void setUp()  {
+        instructor = new Instructor();
+    }
+
+    public void testImplementation() {
+        Assert.assertTrue(instructor instanceof Teacher);
+    }
+
+    public void testInheritance() {
+        Assert.assertTrue(instructor instanceof Person);
+    }
+
+    public void testTeach() {
+        Student student = new Student("Lolu");
+        instructor.teach(student, 8);
+        double expected = student.getTotalStudyTime();
+        Assert.assertEquals(8,expected,1);
+    }
+
+    public void testLecture() {
+        Student[] students = {new Student("Lolu")};
+        instructor.lecture(students, 8);
+        double expected = instructor.getNumberOfHoursPerStudent();
+        Assert.assertEquals(8,expected,1);
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/dtcc/projects/JavaAcademyTest.java b/src/test/java/com/dtcc/projects/JavaAcademyTest.java
new file mode 100644
index 0000000..02a6bca
--- /dev/null
+++ b/src/test/java/com/dtcc/projects/JavaAcademyTest.java
@@ -0,0 +1,25 @@
+package com.dtcc.projects;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import java.util.ArrayList;
+
+public class JavaAcademyTest extends TestCase {
+    JavaAcademy javaAcademy;
+
+    public void setUp() throws Exception {
+        javaAcademy = new JavaAcademy();
+        JavaAcademy.removeStudents();
+    }
+    public void testRecruitStudent() {
+       Student student = new Student("Zoe");
+        String actual = "Zoe";
+        JavaAcademy.recruitStudent(student);
+        Assert.assertEquals("Zoe",JavaAcademy.getStudents().get(0).getStudentName());
+    }
+
+    public void testRemoveStudents() {
+        Assert.assertTrue(JavaAcademy.getStudents().isEmpty());
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/com/dtcc/projects/TestPerson.java b/src/test/java/com/dtcc/projects/TestPerson.java
index 040f78f..511b2da 100644
--- a/src/test/java/com/dtcc/projects/TestPerson.java
+++ b/src/test/java/com/dtcc/projects/TestPerson.java
@@ -1,4 +1,23 @@
 package com.dtcc.projects;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 public class TestPerson {
+
+    @Test
+    public void testSetName(){
+        String expected = "Lolu";
+        Person person = new Person(expected);
+        String actual = person.getName();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testConstructor(){
+        String expected = "Lolu";
+        Person person = new Person(expected);
+        String actual = person.getName();
+        Assert.assertEquals(expected, actual);
+    }
 }
diff --git a/src/test/java/com/dtcc/projects/TestStudent.java b/src/test/java/com/dtcc/projects/TestStudent.java
new file mode 100644
index 0000000..a0a1262
--- /dev/null
+++ b/src/test/java/com/dtcc/projects/TestStudent.java
@@ -0,0 +1,26 @@
+package com.dtcc.projects;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+public class TestStudent extends TestCase {
+    Student student;
+    public void setUp() throws Exception {
+       student = new Student();
+    }
+
+    public void testImplementation() {
+        Assert.assertTrue(student instanceof Learner);
+    }
+
+    public void testLearn() {
+        student.learn(5.00);
+        double actual = 5.00;
+        double expected = student.getTotalStudyTime();
+        Assert.assertEquals(actual,expected,1);
+    }
+
+    public void testInheritance() {
+        Assert.assertTrue(student instanceof Person);
+    }
+}
\ No newline at end of file
diff --git a/target/classes/com/dtcc/projects/ClassRoom.class b/target/classes/com/dtcc/projects/ClassRoom.class
new file mode 100644
index 0000000..04c7b9c
Binary files /dev/null and b/target/classes/com/dtcc/projects/ClassRoom.class differ
diff --git a/target/classes/com/dtcc/projects/DelTech.class b/target/classes/com/dtcc/projects/DelTech.class
new file mode 100644
index 0000000..06b3ba6
Binary files /dev/null and b/target/classes/com/dtcc/projects/DelTech.class differ
diff --git a/target/classes/com/dtcc/projects/Instructor.class b/target/classes/com/dtcc/projects/Instructor.class
new file mode 100644
index 0000000..c3dfbfc
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diff --git a/target/classes/com/dtcc/projects/JavaAcademy.class b/target/classes/com/dtcc/projects/JavaAcademy.class
new file mode 100644
index 0000000..211324f
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diff --git a/target/classes/com/dtcc/projects/Learner.class b/target/classes/com/dtcc/projects/Learner.class
new file mode 100644
index 0000000..64b9cf6
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diff --git a/target/classes/com/dtcc/projects/Person.class b/target/classes/com/dtcc/projects/Person.class
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index 0000000..27fc0ea
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diff --git a/target/classes/com/dtcc/projects/Student.class b/target/classes/com/dtcc/projects/Student.class
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index 0000000..806570a
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diff --git a/target/classes/com/dtcc/projects/Teacher.class b/target/classes/com/dtcc/projects/Teacher.class
new file mode 100644
index 0000000..53a48f8
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index 0000000..69a6164
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new file mode 100644
index 0000000..97e2a81
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new file mode 100644
index 0000000..46aa27d
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diff --git a/target/test-classes/com/dtcc/projects/JavaAcademyTest.class b/target/test-classes/com/dtcc/projects/JavaAcademyTest.class
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index 0000000..f87e816
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