Done

README.md

@@ -1,5 +1,5 @@
 # Leon's Lengthy Learner Lab 
-* **Objective** - to implement a `ZipCodeWilmington` class which _mediates_ a _composite_ `Students` and `Instructors` _singleton_ reference.
+* **Objective** - to implement a `ZipCodeWilmington` class which _mediates_ a _composite_ `io.zipcoder.interfaces.Students` and `Instructors` _singleton_ reference.
 * **Purpose** - to demonstrate the use of
 	* [interfaces](https://stackoverflow.com/questions/1321122/what-is-an-interface-in-java)
 	* [abstract classes](https://stackoverflow.com/questions/1320745/abstract-class-in-java)
@@ -111,21 +111,21 @@
 
 
 -
-### Part 7.1 - Create `Students` singleton
+### Part 7.1 - Create `io.zipcoder.interfaces.Students` singleton
 * **Note:** The creation of this class will demonstrate an implementation of [singleton design pattern](https://www.journaldev.com/1377/java-singleton-design-pattern-best-practices-examples#eager-initialization).
-* Create a `Students` class.
+* Create a `io.zipcoder.interfaces.Students` class.
 	* The class should be an _unextendable_ subclass of the `People` class.
-	* The class should _statically instantiate_ a `final` field named `INSTANCE` of type `Students`.
+	* The class should _statically instantiate_ a `final` field named `INSTANCE` of type `io.zipcoder.interfaces.Students`.
 	* The class should define a _private nullary constructor_ which populates the `INSTANCE` field with respective `Student` representations of your colleagues.
 		* Each student should have a _relatively_ unique `id` field.
 	* The class should define a `getInstance` method which returns the `INSTANCE` field.
 
 
 
 -
-### Part 7.0 - Test `Students` singleton
+### Part 7.0 - Test `io.zipcoder.interfaces.Students` singleton
 * Create a `TestStudents` class.
-	* Create a `test` method which ensures that each of the students in your current cohort are in your `Students` singleton.
+	* Create a `test` method which ensures that each of the students in your current cohort are in your `io.zipcoder.interfaces.Students` singleton.
 
 
 
@@ -139,7 +139,7 @@
 -
 ### Part 9.1 - Create `ZipCodeWilmington` Class
 * Create a `ZipCodeWilmington` singleton.
-	* The class should declare a field that references the instance of `Students` called `students`.
+	* The class should declare a field that references the instance of `io.zipcoder.interfaces.Students` called `students`.
 	* The class should declare a field that references the instance of `Instructors` called `instructors`.
 	* The class should define a method `hostLecture` which makes use of a `Teacher teacher, double numberOfHours` parameter to host a `lecture` to the composite `personList` field in the `students` reference.
 	* The class should define a method `hostLecture` which makes use of a `long id, double numberOfHours` parameter to identify a respective `Instructor` to host a `lecture` to the composite `personList` field in the `cohort` reference.
@@ -176,7 +176,7 @@
 
 -
 ### Part 10.2 - Modify `People` subclasses
-* Modify the `Students` class signature to ensure that it is a subclass of `People` of parameterized type `Student`.
+* Modify the `io.zipcoder.interfaces.Students` class signature to ensure that it is a subclass of `People` of parameterized type `Student`.
 * Modify the `Instructors` class signature to ensure that it is a subclass of `People` of parameterized type `Instructor`.
 * Provide concrete implementations of the `getArray` method in each of these classes.
 

interfaces-1.iml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+  </component>
+</module>

src/main/java/io/zipcoder/interfaces/Educator.java

@@ -0,0 +1,25 @@
+package io.zipcoder.interfaces;
+
+public enum Educator implements Teacher {
+
+    ONE(new Instructor(2323L, "BIP")), BOOP(new Instructor(3232L, "BOOP"));
+
+    Instructor instructor;
+    Double timeWorked = 0D;
+
+    Educator(Instructor instructor) {
+    this.instructor = instructor;
+    }
+
+    @Override
+    public void teach(Learner learner, Double numberOfHours) {
+        this.instructor.teach(learner,numberOfHours);
+        this.timeWorked += numberOfHours;
+    }
+
+    @Override
+    public void lecture(Learner[] learners, Double numberOfHours) {
+        this.instructor.lecture(learners, numberOfHours);
+        this.timeWorked += numberOfHours;
+    }
+}

src/main/java/io/zipcoder/interfaces/Instructor.java

@@ -0,0 +1,18 @@
+package io.zipcoder.interfaces;
+
+public class Instructor extends Person implements Teacher {
+    public Instructor(Long id, String name) {
+        super(id, name);
+    }
+
+    public void teach(Learner learner, Double numberOfHours) {
+        learner.learn(numberOfHours);
+    }
+
+    public void lecture(Learner[] learners, Double numberOfHours) {
+        Double numberOfHoursPerLearner = numberOfHours / learners.length;
+        for(Learner l : learners){
+            l.learn(numberOfHoursPerLearner);
+        }
+    }
+}

src/main/java/io/zipcoder/interfaces/Instructors.java

@@ -0,0 +1,23 @@
+package io.zipcoder.interfaces;
+
+public class Instructors extends People<Instructor> {
+
+    public static final Instructors INSTANCE = new Instructors();
+
+        private Instructors(){
+            Instructor instructor1 = new Instructor(2323L, "Boop");
+            Instructor instructor2 = new Instructor(3232L, "Bip");
+            personList.add(instructor1);
+            personList.add(instructor2);
+
+        }
+
+        public static Instructors getInstance(){
+            return INSTANCE;
+        }
+
+    @Override
+    public Instructor[] toArray() {
+        return personList.toArray(new Instructor[personList.size()]);
+    }
+}