Learned Lots Lengthy Learner Lab

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_14">
+    <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>

pom.xml

@@ -5,6 +5,18 @@
   <groupId>io.zipcoder</groupId>
   <artifactId>interfaces-1</artifactId>
   <version>0.0.1-SNAPSHOT</version>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>14</source>
+          <target>14</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
   <packaging>jar</packaging>
 
   <name>interfaces-1</name>

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

@@ -0,0 +1,40 @@
+package io.zipcoder.interfaces;
+
+public enum Educator implements  Teacher{
+    LEON (new Instructor(76L, "Leon")),
+    DOLIO (new Instructor(70L, "Dolio")),
+    KRIS (new Instructor(72L, "Kris"));
+
+    private final Instructor instructor;
+    private double timeWorked;
+
+    Educator(Instructor instructor){
+        this.instructor = instructor;
+        Instructors.getInstance().add(instructor);
+    }
+
+    public Instructor getInstructor(){
+        return instructor;
+     }
+
+     public Double getTimeWorked(){
+        return timeWorked;
+     }
+
+    @Override
+    public void teach(Learner learner, Double numberOfHours) {
+        this.timeWorked += numberOfHours;
+        learner.learn(numberOfHours);
+
+    }
+
+    @Override
+    public void lecture(Learner[] learners, Double numberOfHours) {
+        this.timeWorked += numberOfHours;
+        double hoursLearned = numberOfHours/ learners.length;
+        for (Learner learner : learners) {
+            learner.learn(hoursLearned);
+        }
+    }
+
+}

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

@@ -0,0 +1,25 @@
+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 hoursPerLearner = numberOfHours/ learners.length;
+
+        for (Learner learner : learners) {
+            learner.learn(hoursPerLearner);
+        }
+
+    }
+}

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

@@ -0,0 +1,19 @@
+package io.zipcoder.interfaces;
+
+public final class Instructors extends People<Instructor>{
+    private static final Instructors INSTANCE = new Instructors();
+
+    private Instructors (){
+        this.add(new Instructor(444L, "Dolio"));
+        this.add(new Instructor(445L, "Leon"));
+        this.add(new Instructor(446L, "Kris"));
+    }
+
+    public static Instructors getInstance(){
+        return INSTANCE;
+    }
+
+    public Instructor[] getArray(){
+        return personList.toArray(new Instructor[0]);
+    }
+}

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

@@ -0,0 +1,7 @@
+package io.zipcoder.interfaces;
+
+public interface Learner {
+
+    void learn(Double numberOfHours);
+    Double getTotalStudyTime();
+}

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

@@ -0,0 +1,48 @@
+package io.zipcoder.interfaces;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+public abstract class People<E extends Person> implements Iterable<E> {
+
+    List<E> personList = new ArrayList<>();
+
+    public void add(E person){
+        personList.add(person);
+    }
+
+    public E findById(Long id){
+        for (E person : personList) {
+            Long currentId = person.getId();
+            boolean isSameId = currentId.equals(id);
+           if (isSameId)
+               return person;
+        }
+        return null;
+    }
+
+    public void remove(E person){
+        personList.remove(person);
+    }
+
+    public void removeById(Long id){
+        personList.removeIf(person -> person.getId().equals(id));
+
+    }
+    public void removeAll(){
+        personList.clear();
+    }
+
+    public int count(){
+        return personList.size();
+    }
+
+    public abstract E[] getArray();
+
+    @Override
+    public Iterator<E> iterator(){
+        return  personList.iterator();
+    }
+
+}

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

@@ -1,5 +1,38 @@
 package io.zipcoder.interfaces;
 
+import java.util.Objects;
+
 public class Person {
+    private final Long id;
+    private String name;
+
+    public Person(Long id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String newName) {
+        this.name = newName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    @Override
+    public String toString() {
+        return "Person{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                '}';
+    }
 
+    @Override
+    public boolean equals(Object o){
+        return o.toString().equals(toString());
+    }
 }

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

@@ -0,0 +1,20 @@
+package io.zipcoder.interfaces;
+
+public class Student extends Person implements Learner{
+
+    Double totalStudyTime = 0.0;
+
+    public Student(Long id, String name) {
+        super(id, name);
+    }
+
+
+    public void learn(Double hours){
+        totalStudyTime += hours;
+    }
+
+    public Double getTotalStudyTime(){
+        return totalStudyTime;
+    }
+}
+

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

@@ -0,0 +1,37 @@
+package io.zipcoder.interfaces;
+
+import java.util.ArrayList;
+
+public final class Students extends People<Student> {
+    private static final Students INSTANCE = new Students();
+
+    private Students() {
+        this.add(new Student(644L, "Nick"));
+        this.add(new Student(645L, "Char"));
+        this.add(new Student(646L, "Sitara"));
+        this.add(new Student(647L, "Zach"));
+        this.add(new Student(648L, "Dipinti"));
+        this.add(new Student(649L, "Jeremy"));
+        this.add(new Student(650L, "Tatiana"));
+        this.add(new Student(651L, "Ray"));
+        this.add(new Student(652L, "Nisha"));
+        this.add(new Student(653L, "Manny"));
+        this.add(new Student(654L, "Nathan"));
+        this.add(new Student(655L, "Laura"));
+        this.add(new Student(656L, "Jen"));
+        this.add(new Student(657L, "Zachary"));
+        this.add(new Student(658L, "John"));
+        this.add(new Student(659L, "Bobbi"));
+        this.add(new Student(660L, "Rex"));
+
+    }
+
+    public static Students getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    public Student[] getArray() {
+        return personList.toArray(new Student[0]);
+    }
+}