SpringBoot is working

demo/src/main/java/com/example/demo/Alumni.java

@@ -7,14 +7,14 @@ import org.springframework.stereotype.Component;
 import javax.annotation.PostConstruct;
 
 @Component
-@DependsOn("StudentsConfig")
+// @DependsOn("StudentsConfig")
 public class Alumni {
 
     private Students alumni;
     private Instructors instructors;
 
-    Alumni(@Autowired Instructors instructors, @Autowired StudentsConfig studentsConfig){
-        this.instructors = instructors;
+    Alumni(@Autowired InstructorsConfig instructorsConfig, @Autowired StudentsConfig studentsConfig){
+        this.instructors = instructorsConfig.tcUsaInstructors();
         this.alumni = studentsConfig.previousStudents();
     }
 
@@ -27,13 +27,30 @@ public class Alumni {
     }
 
     @PostConstruct
-    public void executeBootcamp(){
-        int numberOfHoursPerInstructor = 1200 / instructors.personList.size();
-        for (Instructor i: instructors) {
-            i.lecture(alumni, numberOfHoursPerInstructor);
+    public void executeBootcamp (){
+        try {
+            int numOfInstructors = instructors.personList.size();
+            int numberOfHoursPerInstructor = 1200 / numOfInstructors;
+//            for (Instructor i : instructors) {
+//                i.lecture(alumni, numberOfHoursPerInstructor);
+//            }
+            for (int i = 0; i < numOfInstructors; i++){
+                instructors.personList.get(i)
+                    .lecture(alumni, numberOfHoursPerInstructor);
+            }
+        } catch (ArithmeticException e){
+            throw new ArithmeticException("Cannot divide by zero");
         }
-
     }
 
-
 }
+//    public void executeBootcamp (){
+//        if (instructors.personList.size() == 0){
+//            throw new ArithmeticException("Cannot divide by zero");
+//        } else {
+//            int numberOfHoursPerInstructor = 1200 / instructors.personList.size();
+//            for (Instructor i : instructors) {
+//                i.lecture(alumni, numberOfHoursPerInstructor);
+//            }
+//        }
+//    }

demo/src/main/java/com/example/demo/ClassroomConfig.java

@@ -8,7 +8,7 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.DependsOn;
 
 @Configuration
-@DependsOn({"students", "previousStudents", "tcUsaInstructors", "tcUkInstructors", "instructors"})
+// @DependsOn({"students", "previousStudents", "tcUsaInstructors", "tcUkInstructors", "instructors"})
 public class ClassroomConfig {
 
     @Bean(name = "currentCohort")

demo/src/main/java/com/example/demo/Students.java

@@ -17,7 +17,7 @@ public class Students extends People<Student> {
 
     @Override
     public Iterator iterator() {
-        return null;
+        return this.personList.iterator();
     }
 
     @Override
@@ -27,7 +27,7 @@ public class Students extends People<Student> {
 
     @Override
     public Spliterator spliterator() {
-        return null;
+        return this.personList.spliterator();
     }
 
 

demo/src/main/java/com/example/demo/StudentsConfig.java

@@ -10,7 +10,7 @@ import java.util.ArrayList;
 public class StudentsConfig {
 
     @Bean(name = "students")
-    //@Qualifier("tudents")
+    //@Qualifier("students")
     public Students students(){
         ArrayList<Student> currentStudents = new ArrayList<>();