Finished

src/main/java/com/classroom/Alumni.java

@@ -0,0 +1,39 @@
+package com.classroom;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+
+@Component
+public class Alumni {
+
+    final
+    Classroom prevCohort;
+
+
+    public Alumni(@Qualifier("previousCohort") Classroom prevCohort) {
+        this.prevCohort = prevCohort;
+    }
+
+    @PostConstruct
+    public void executeBootcamp(){
+        int numberOfInstructors = prevCohort.getInstructors().size();
+        int numberOfStudents = prevCohort.getStudents().size();
+
+        double numberOfHoursToTeachEachStudent = 1200;
+        double numberOfHoursToTeach = numberOfHoursToTeachEachStudent * numberOfStudents; //1200*4 = 4800
+        double numberOfHoursPerInstructor = numberOfHoursToTeach / numberOfInstructors; //4800/2 = 2400
+
+        for(Instructor teach: prevCohort.getInstructors()){
+            for(Student stud: prevCohort.getStudents()){
+                teach.teach(stud, numberOfHoursPerInstructor);
+            }
+        }
+    }
+
+    public Classroom getPrevCohort() {
+        return prevCohort;
+    }
+
+}

src/main/java/com/classroom/Classroom.java

@@ -0,0 +1,26 @@
+package com.classroom;
+
+import java.util.List;
+
+public class Classroom {
+
+    private List<Instructor> Instructors;
+    private List<Student> Students;
+
+    public Classroom(List<Instructor> persons, List<Student> students){
+        this.Instructors = persons;
+        this.Students = students;
+    }
+
+    public void hostLecture(Teacher teacher, double numberOfHours){
+        teacher.lecture(Students, numberOfHours);
+    }
+
+    public List<Instructor> getInstructors() {
+        return Instructors;
+    }
+
+    public List<Student> getStudents() {
+        return Students;
+    }
+}

src/main/java/com/classroom/ClassroomApplication.java

@@ -0,0 +1,13 @@
+package com.classroom;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ClassroomApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ClassroomApplication.class, args);
+    }
+
+}

src/main/java/com/classroom/ClassroomConfig.java

@@ -0,0 +1,45 @@
+package com.classroom;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Configuration
+public class ClassroomConfig {
+
+    @Bean(name = "currentCohort")
+    public Classroom currentCohort(){
+
+        List<Instructor> instructors = new ArrayList<>();
+        List<Student> students = new ArrayList<>();
+
+        instructors.add(new Instructor(100l, "Zan"));
+        instructors.add(new Instructor(101l, "Brian"));
+
+        students.add(new Student(1l, "Cedric"));
+        students.add(new Student(2l, "Lolu"));
+        students.add(new Student(3l, "Apoorva"));
+        students.add(new Student(4l, "Stephen"));
+
+        return new Classroom(instructors, students);
+    }
+
+    @Bean(name = "previousCohort")
+    public Classroom previousCohort(){
+
+        List<Instructor> instructors = new ArrayList<>();
+        List<Student> students = new ArrayList<>();
+
+        instructors.add(new Instructor(102l, "Kaleb"));
+        instructors.add(new Instructor(103l, "Tutor"));
+
+        students.add(new Student(5l, "Charu"));
+        students.add(new Student(6l, "Robert"));
+        students.add(new Student(7l, "user iphone 83"));
+        students.add(new Student(8l, "Jessica"));
+
+        return new Classroom(instructors, students);
+    }
+}

src/main/java/com/classroom/Instructor.java

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+package com.classroom;
+
+public class Instructor extends Person implements Teacher {
+
+    public Instructor(){
+        this(null, null);
+    }
+
+    public Instructor(Long ID, String name){
+        super(ID, name);
+    }
+
+    @Override
+    public void teach(Learner learner, double numberOfHours) {
+        learner.learn(numberOfHours);
+    }
+
+    @Override
+    public void lecture(Iterable<? extends Learner> learners, double numberOfHours) {
+        Integer numOfStudents =0;
+        for(Learner s:learners){
+        numOfStudents += 1;
+        }
+
+        for(Learner s:learners){
+            s.learn(numberOfHours/numOfStudents);
+        }
+    }
+}