working on part 10

.idea/.name

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+                <option value="0.2" />
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+</project>

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_5">
+    <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/Person.java

@@ -1,5 +1,22 @@
 package io.zipcoder.interfaces;
 
 public class Person {
+    private final long ID;
+    private String name;
 
+    public Person(long ID){
+        this.ID = ID;
+    }
+
+    public long getID() {
+        return ID;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
 }

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

@@ -0,0 +1,24 @@
+package io.zipcoder.interfaces;
+
+public class Instructor extends Person implements Teacher{
+    private String name;
+
+    public Instructor(long ID) {
+        super(ID);
+    }
+
+    public Instructor(long ID, String name){
+        super(ID);
+        this.name = name;
+    }
+
+    public void teach(Learner learner, double numberOfHours) {
+        learner.learn(numberOfHours);
+    }
+
+    public void lecture(Learner[] learners, double numberOfHours) {
+        for (int i = 0; i < learners.length; i++) {
+            learners[i].learn(numberOfHours/learners.length);
+        }
+    }
+}

src/test/java/io/zipcoder/interfaces/InstructorTest.java

@@ -0,0 +1,42 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class InstructorTest {
+    Student student = new Student(012345);
+    Student student2 = new Student(001234);
+    Learner[] learners = {student, student2};
+
+    Instructor instructor = new Instructor(000001);
+
+    @Test
+    public void testImplementation(){
+
+        Assert.assertTrue(instructor instanceof Teacher);
+    }
+
+    @Test
+    public void testInheritance(){
+
+        Assert.assertTrue(instructor instanceof Person);
+    }
+
+    @Test
+    public void testTeach(){
+        instructor.teach(student, 4.0);
+
+        double expected = 4.0;
+        double actual = student.getTotalStudyTime();
+        Assert.assertEquals(expected, actual, .0001);
+    }
+
+    @Test
+    public void testLecture(){
+
+        instructor.lecture(learners, 3.0);
+        double expected = 1.5;
+        double actual = student.getTotalStudyTime();
+        Assert.assertEquals(expected, actual, .0001);
+    }
+}

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

@@ -0,0 +1,33 @@
+package io.zipcoder.interfaces;
+
+import java.util.ArrayList;
+
+public final class Instructors extends People{
+
+    static final Instructors INSTANCE = new Instructors();
+    ArrayList<Instructor> instructorList = new ArrayList<Instructor>();
+
+    private Instructors(){
+        instructorList.add(new Instructor(01, "Nhu Nguyen"));
+        instructorList.add(new Instructor(02, "Froilan Miranda"));
+        instructorList.add(new Instructor(03, "Kristofer Younger"));
+        instructorList.add(new Instructor(04, "L. Dolio Durant"));
+        instructorList.add(new Instructor(05, "Leon Hunter"));
+        instructorList.add(new Instructor(06, "Wilhem Alcivar"));
+    }
+
+    public static Instructors getInstance(){
+        return INSTANCE;
+    }
+
+    public Person[] getArray() {
+        Person[] instructorArray = new Person[instructorList.size()];
+
+        for (int i = 0; i < instructorList.size(); i++) {
+            for (int j = 0; j < instructorArray.length; j++) {
+                instructorArray[i] = instructorList.get(i);
+            }
+        }
+        return instructorArray;
+    }
+}

src/test/java/io/zipcoder/interfaces/InstructorsTest.java

@@ -0,0 +1,27 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class InstructorsTest {
+
+    @Test
+    public void testSingletonInstance(){
+
+        Instructors instance1 = Instructors.getInstance();
+        Instructors instance2 = Instructors.getInstance();
+
+        Assert.assertSame(instance1, instance2);
+    }
+
+    @Test
+    public void testInitializationSetupStudents(){
+
+        Instructors instructors = Instructors.getInstance();
+        Person[] instructorssArray = instructors.getArray();
+
+        int expected = 6;
+        int actual = instructorssArray.length;
+        Assert.assertEquals(expected, actual);
+    }
+}

src/test/java/io/zipcoder/interfaces/Learner.java

@@ -0,0 +1,6 @@
+package io.zipcoder.interfaces;
+
+public interface Learner {
+
+    void learn (double numberOfHours);
+}

src/test/java/io/zipcoder/interfaces/People.java

@@ -0,0 +1,51 @@
+package io.zipcoder.interfaces;
+
+import java.util.ArrayList;
+
+public class People {
+    ArrayList<Person> personList = new ArrayList<Person>();
+
+
+    public void add(Person person){
+        personList.add(person);
+    }
+
+    public int getCount(){
+        return personList.size();
+    }
+
+    public void remove(Person person){
+        personList.remove(person);
+    }
+
+    public void remove(long ID){
+        personList.remove(ID);
+    }
+
+    public Person findById(long ID){
+        Person person = null;
+        for (int i = 0; i < personList.size(); i++) {
+            if (personList.get(i).equals(ID)){
+                person =  personList.get(i);
+                break;
+            }
+        }
+        return person;
+    }
+
+    public Person[] getArray(){
+        Person[] personArray = new Person[personList.size()];
+
+        for (int i = 0; i < personList.size(); i++) {
+            for (int j = 0; j < personArray.length; j++) {
+                personArray[i] = personList.get(i);
+            }
+        }
+        return personArray;
+    }
+
+    public void removeAll(){
+        personList = new ArrayList<Person>();
+    }
+
+}

src/test/java/io/zipcoder/interfaces/PeopleTest.java

@@ -0,0 +1,73 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+public class PeopleTest {
+    ArrayList<Person> personList = new ArrayList();
+    People people = new People();
+    Person person = new Person(00001);
+    Person anotherPerson = new Person(00002);
+    Person person2 = new Person(00003);
+
+    @Test
+    public void testAdd(){
+        int expected = 1;
+        people.add(person);
+        int actual = people.getCount();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testRemoveByPerson(){
+        int expected = 1;
+        people.add(anotherPerson);
+        people.remove(person);
+        int actual = people.getCount();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testRemoveById(){
+        int expected = 1;
+        people.add(person2);
+        people.remove(00001);
+        int actual = people.getCount();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testFindById(){
+        people.add(person);
+        people.add(person2);
+        Person expected = person;
+
+        Person actual = people.findById(00001);
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testGetArray(){
+
+        people.add(person);
+        people.add(person2);
+        Person[] expected = {person, person2};
+
+        Person[] actual = people.getArray();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testRemoveAll(){
+        people.add(person);
+        people.add(person2);
+        people.removeAll();
+        int expected = 0;
+        int actual = people.getCount();
+        Assert.assertEquals(expected, actual);
+    }
+
+
+}

src/test/java/io/zipcoder/interfaces/Student.java

@@ -0,0 +1,24 @@
+package io.zipcoder.interfaces;
+
+public class Student extends Person implements Learner{
+    private double totalStudyTime;
+    private String name;
+
+    public Student(long ID) {
+        super(ID);
+    }
+
+    public Student(long ID, String name) {
+        super(ID);
+        this.name = name;
+    }
+
+    public void learn(double numberOfHours){
+        totalStudyTime = totalStudyTime + numberOfHours;
+    }
+
+    public double getTotalStudyTime(){
+        return totalStudyTime;
+    }
+}
+

src/test/java/io/zipcoder/interfaces/StudentTest.java

@@ -0,0 +1,23 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class StudentTest {
+    Student student = new Student(012345);
+
+    @Test
+    public void testImplementation(){
+
+        Assert.assertTrue(student instanceof Person);
+    }
+
+    @Test
+    public void testLearn(){
+
+        student.learn(5.0);
+        double expected = 5.0;
+        double actual = student.getTotalStudyTime();
+        Assert.assertEquals(expected, actual, .001);
+    }
+}

src/test/java/io/zipcoder/interfaces/Students.java

@@ -0,0 +1,67 @@
+package io.zipcoder.interfaces;
+
+import java.util.ArrayList;
+
+public final class Students extends People{
+
+    static final Students INSTANCE = new Students();
+    ArrayList<Student> studentList = new ArrayList<Student>();
+
+    private Students(){
+        studentList.add(new Student(1, "Ned Redmond"));
+        studentList.add(new Student(2, "Seth Abrams"));
+        studentList.add(new Student(3, "Akeem Cherry"));
+        studentList.add(new Student(4, "Whitney Martinez"));
+        studentList.add(new Student(5, "Nira Parikh"));
+        studentList.add(new Student(6, "Connor Dunnigan"));
+        studentList.add(new Student(7, "Christian Sheridan"));
+        studentList.add(new Student(8, "Curtis Cook"));
+        studentList.add(new Student(9, "Nuridalia Hernandez"));
+        studentList.add(new Student(10, "Brandon DeFrancis"));
+        studentList.add(new Student(11, "De'Jon Johnson"));
+        studentList.add(new Student(12, "Demetrius Murray"));
+        studentList.add(new Student(13, "Elliott Stansbury"));
+        studentList.add(new Student(14, "Nathan Hall"));
+        studentList.add(new Student(15, "Jae Joson"));
+        studentList.add(new Student(16, "Jacob Anderson"));
+        studentList.add(new Student(17, "Jose Bedolla"));
+        studentList.add(new Student(18, "Jenn Chao"));
+        studentList.add(new Student(19, "Jennifer Tinkler"));
+        studentList.add(new Student(20, "Jonathan Hinds"));
+        studentList.add(new Student(21, "Jay Samuels"));
+        studentList.add(new Student(22, "Jevit Tith"));
+        studentList.add(new Student(23, "Lauren Green"));
+        studentList.add(new Student(24, "Kate Moore"));
+        studentList.add(new Student(25, "Michelle DiMarino"));
+        studentList.add(new Student(26, "Maggie Pierse"));
+        studentList.add(new Student(27, "Nick Satinover"));
+        studentList.add(new Student(28, "Chaitali Patel"));
+        studentList.add(new Student(29, "Yesoda Sanka"));
+        studentList.add(new Student(30, "Saurav Kamath"));
+        studentList.add(new Student(31, "Sam Bhutani"));
+        studentList.add(new Student(32, "Soujanya Buragapu"));
+        studentList.add(new Student(33, "Steffon Williams"));
+        studentList.add(new Student(34, "Zavon Malone"));
+        studentList.add(new Student(35, "Thuy Kong"));
+        studentList.add(new Student(36, "Thulasi Puppala"));
+        studentList.add(new Student(37, "Trinh Tong"));
+        studentList.add(new Student(38, "William Brown"));
+        studentList.add(new Student(39, "Xzavia Cuello"));
+    }
+
+    public static Students getInstance(){
+        return INSTANCE;
+    }
+
+    public Person[] getArray() {
+        Person[] StudentsArray = new Person[studentList.size()];
+
+        for (int i = 0; i < studentList.size(); i++) {
+            for (int j = 0; j < StudentsArray.length; j++) {
+                StudentsArray[i] = studentList.get(i);
+            }
+        }
+        return StudentsArray;
+    }
+
+}

src/test/java/io/zipcoder/interfaces/StudentsTest.java

@@ -0,0 +1,28 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class StudentsTest {
+
+
+    @Test
+    public void testSingletonInstance(){
+
+        Students instance1 = Students.getInstance();
+        Students instance2 = Students.getInstance();
+
+        Assert.assertSame(instance1, instance2);
+    }
+
+    @Test
+    public void testInitializationSetupStudents(){
+
+        Students students = Students.getInstance();
+        Person[] studentsArray = students.getArray();
+
+        int expected = 39;
+        int actual = studentsArray.length;
+        Assert.assertEquals(expected, actual);
+    }
+}

src/test/java/io/zipcoder/interfaces/Teacher.java

@@ -0,0 +1,8 @@
+package io.zipcoder.interfaces;
+
+public interface Teacher {
+
+    void teach(Learner learner, double numberOfHours);
+
+    void lecture(Learner[] learners, double numberOfHours);
+}

src/test/java/io/zipcoder/interfaces/TestPerson.java

@@ -1,5 +1,25 @@
 package io.zipcoder.interfaces;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 public class TestPerson {
+    Person person = new Person(1000000);
+
+    @Test
+    public void testConstructor(){
+
+        long expected = 1000000;
+        long actual = person.getID();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testSetAndGetName(){
 
+        String expected = "John Smith";
+        person.setName("John Smith");
+        String actual = person.getName();
+        Assert.assertEquals(expected, actual);
+    }
 }

src/test/java/io/zipcoder/interfaces/ZipCodeWilmington.java

@@ -0,0 +1,17 @@
+package io.zipcoder.interfaces;
+
+public class ZipCodeWilmington {
+    private Student student;
+    private Instructors instructors;
+
+    static final ZipCodeWilmington INSTANCE = new ZipCodeWilmington();
+
+    public void hostLecture(Teacher teacher, double numberOfHours){
+        Students students = Students.getInstance();
+        teacher.lecture(students.getArray(), numberOfHours);
+    }
+
+    public void hostLecture(long ID, double numberOfHours){
+
+    }
+}

src/test/java/io/zipcoder/interfaces/ZipCodeWilmingtonTest.java

@@ -0,0 +1,19 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Test;
+
+public class ZipCodeWilmingtonTest {
+    Student student = new Student(0001);
+    Instructor instructor = new Instructor(05);
+
+    @Test
+    public void testHostLecture(){
+
+        instructor.hostLecture(05, 2.5);
+        double actual = student.getTotalStudyTime();
+
+
+    }
+
+
+}