created people class and test class

.idea/workspace.xml

@@ -2,12 +2,16 @@
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-      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java" afterDir="false" />
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@@ -20,36 +24,40 @@
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@@ -61,46 +69,41 @@
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-        <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
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-        <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java">
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-        <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java">
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@@ -110,8 +113,8 @@
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         <option value="Interface" />
+        <option value="Class" />
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@@ -121,12 +124,16 @@
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         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" />
         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" />
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-        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" />
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@@ -148,8 +155,6 @@
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@@ -208,12 +213,14 @@
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+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1541474609100" />
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@@ -235,8 +242,8 @@
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-    <configuration name="TestPerson.testConstructor" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+  <component name="RunManager" selected="JUnit.PeopleTest.removeByPersonTest">
+    <configuration name="InstructorTest.testLecture" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
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@@ -245,14 +252,14 @@
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-      <option name="METHOD_NAME" value="testConstructor" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorTest" />
+      <option name="METHOD_NAME" value="testLecture" />
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-    <configuration name="TestPerson.testSetAndGetName" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="InstructorTest.testTeach" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
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@@ -261,14 +268,14 @@
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-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.TestPerson" />
-      <option name="METHOD_NAME" value="testSetAndGetName" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorTest" />
+      <option name="METHOD_NAME" value="testTeach" />
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-    <configuration name="TestStudent.testImplementation" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="PeopleTest.addTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
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@@ -277,14 +284,14 @@
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+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.PeopleTest" />
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-    <configuration name="TestStudent.testInheritance" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="PeopleTest.removeByPersonTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
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@@ -293,8 +300,8 @@
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+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.PeopleTest" />
+      <option name="METHOD_NAME" value="removeByPersonTest" />
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@@ -317,19 +324,19 @@
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-      <item itemvalue="JUnit.TestStudent.testInheritance" />
       <item itemvalue="JUnit.TestStudent.testLearn" />
+      <item itemvalue="JUnit.InstructorTest.testTeach" />
+      <item itemvalue="JUnit.InstructorTest.testLecture" />
+      <item itemvalue="JUnit.PeopleTest.addTest" />
+      <item itemvalue="JUnit.PeopleTest.removeByPersonTest" />
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+        <item itemvalue="JUnit.PeopleTest.removeByPersonTest" />
+        <item itemvalue="JUnit.PeopleTest.addTest" />
+        <item itemvalue="JUnit.InstructorTest.testLecture" />
+        <item itemvalue="JUnit.InstructorTest.testTeach" />
         <item itemvalue="JUnit.TestStudent.testLearn" />
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@@ -343,20 +350,14 @@
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@@ -366,72 +367,93 @@
     <history-entry file="TestStudent_testLearn - 2018.11.03 at 13h 25m 37s.xml">
       <configuration name="TestStudent.testLearn" configurationId="JUnit" />
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+    <history-entry file="InstructorTest_testImplementation - 2018.11.03 at 13h 44m 55s.xml">
+      <configuration name="InstructorTest.testImplementation" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorTest_testInheritance - 2018.11.03 at 13h 46m 18s.xml">
+      <configuration name="InstructorTest.testInheritance" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_testLearn - 2018.11.05 at 21h 41m 20s.xml">
+      <configuration name="TestStudent.testLearn" configurationId="JUnit" />
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+    <history-entry file="InstructorTest_testTeach - 2018.11.05 at 21h 41m 31s.xml">
+      <configuration name="InstructorTest.testTeach" configurationId="JUnit" />
+    </history-entry>
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+      <configuration name="InstructorTest.testLecture" configurationId="JUnit" />
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+    <history-entry file="PeopleTest_addTest - 2018.11.05 at 22h 16m 01s.xml">
+      <configuration name="PeopleTest.addTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="PeopleTest_removeByPersonTest - 2018.11.05 at 22h 23m 31s.xml">
+      <configuration name="PeopleTest.removeByPersonTest" configurationId="JUnit" />
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-      <window_info anchor="right" id="Capture Analysis" order="1" />
-      <window_info anchor="right" id="Database" order="2" />
-      <window_info anchor="right" id="Theme Preview" order="3" />
-      <window_info anchor="right" id="Palette&#9;" order="4" />
-      <window_info anchor="right" id="Maven Projects" order="5" />
-      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="6" type="SLIDING" weight="0.4" />
-      <window_info anchor="right" id="Ant Build" order="7" weight="0.25" />
-      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="8" weight="0.25" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.2536946" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info id="Image Layers" order="2" />
+      <window_info id="Designer" order="3" />
+      <window_info id="UI Designer" order="4" />
+      <window_info id="Capture Tool" order="5" />
+      <window_info id="Favorites" order="6" side_tool="true" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="bottom" id="Run" order="2" weight="0.32928944" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="bottom" id="Version Control" order="7" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Database Changes" order="8" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Terminal" order="9" />
+      <window_info anchor="bottom" id="Event Log" order="10" side_tool="true" />
+      <window_info anchor="bottom" id="Messages" order="11" visible="true" weight="0.32928944" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+      <window_info anchor="right" id="Palette" order="3" />
+      <window_info anchor="right" id="Capture Analysis" order="4" />
+      <window_info anchor="right" id="Database" order="5" />
+      <window_info anchor="right" id="Theme Preview" order="6" />
+      <window_info anchor="right" id="Palette&#9;" order="7" />
+      <window_info anchor="right" id="Maven Projects" order="8" />
     </layout-to-restore>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -445,59 +467,88 @@
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         <state relative-caret-position="275">
           <caret line="21" column="36" lean-forward="true" selection-start-line="21" selection-start-column="36" selection-end-line="21" selection-end-column="36" />
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="255">
-          <caret line="17" column="20" selection-start-line="17" selection-start-column="20" selection-end-line="17" selection-end-column="20" />
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-            <element signature="e#261#262#0" expanded="true" />
-            <element signature="e#288#289#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="30">
+          <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="75">
-          <caret line="5" lean-forward="true" selection-start-line="5" selection-end-line="5" />
+        <state relative-caret-position="30">
+          <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="175">
+          <caret line="35" column="61" selection-start-line="35" selection-start-column="61" selection-end-line="35" selection-end-column="61" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="120">
-          <caret line="8" selection-start-line="8" selection-end-line="8" />
+        <state relative-caret-position="105">
+          <caret line="9" column="38" selection-start-line="9" selection-start-column="38" selection-end-line="9" selection-end-column="38" />
           <folding>
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-            <element signature="e#187#188#0" expanded="true" />
-            <element signature="e#120#121#0" expanded="true" />
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+            <element signature="e#314#315#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="145">
-          <caret line="31" column="34" selection-start-line="31" selection-start-column="34" selection-end-line="31" selection-end-column="34" />
+        <state relative-caret-position="180">
+          <caret line="12" column="53" selection-start-line="12" selection-start-column="53" selection-end-line="12" selection-end-column="53" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="190">
+          <caret line="61" column="64" selection-start-line="61" selection-start-column="64" selection-end-line="61" selection-end-column="64" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="90">
-          <caret line="6" column="66" selection-start-line="6" selection-start-column="66" selection-end-line="6" selection-end-column="66" />
+        <state relative-caret-position="205">
+          <caret line="21" column="34" selection-start-line="21" selection-start-column="34" selection-end-line="21" selection-end-column="34" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#198#199#0" expanded="true" />
+            <element signature="e#226#227#0" expanded="true" />
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+            <element signature="e#362#363#0" expanded="true" />
+            <element signature="e#441#442#0" expanded="true" />
+            <element signature="e#461#462#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="45">
+          <caret line="3" column="18" lean-forward="true" selection-start-line="3" selection-start-column="18" selection-end-line="3" selection-end-column="18" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="235">
+          <caret line="43" column="31" lean-forward="true" selection-start-line="43" selection-start-column="31" selection-end-line="43" selection-end-column="31" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#335#343#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>

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

@@ -0,0 +1,16 @@
+package io.zipcoder.interfaces;
+
+public class Instructor extends Person implements Teacher {
+
+    public void teach(Learner learner, double numberOfHours){
+       learner.learn(numberOfHours);
+
+    }
+
+    public void lecture(Learner[] learners, double numberOfHours){
+        double numberOfHoursPerLearner = numberOfHours / learners.length;
+        for (int i = 0; i < learners.length; i++){
+            learners[i].learn(numberOfHoursPerLearner);
+        }
+    }
+}

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

@@ -1,5 +1,5 @@
 package io.zipcoder.interfaces;
 
 public interface Learner {
-    public double learn(double numberOfHours);
+    public void learn(double numberOfHours);
 }

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

@@ -0,0 +1,24 @@
+package io.zipcoder.interfaces;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+
+public class People {
+
+    ArrayList <Person> peopleList;
+
+    public void add(ArrayList<Person> arrayOfPeople, Person person1) {
+        arrayOfPeople.add(person1);
+    }
+
+    public int getCount(ArrayList<Person> arrayOfPeople){
+        return arrayOfPeople.size();
+    }
+
+    public void removeByPerson(ArrayList<Person> array, Person person1) {
+        array.remove(person1);
+    }
+
+    public void removeById(long id) {
+    }
+}

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

@@ -1,7 +1,7 @@
 package io.zipcoder.interfaces;
 
 public class Person {
-    final long id = 111000000;
+    final long id;
     String name;
 
 

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

@@ -3,11 +3,15 @@ package io.zipcoder.interfaces;
 public class Student extends Person implements Learner {
     double totalStudyTime = 0.0;
 
+    public void setTotalStudyTime(double totalStudyTime){
+        this.totalStudyTime = totalStudyTime;
+    }
+
     public double getTotalStudyTime(){
         return this.totalStudyTime;
     }
 
-    public double learn(double numberOfHours) {
-        return totalStudyTime = totalStudyTime + numberOfHours;
+    public void learn(double numberOfHours) {
+         totalStudyTime = totalStudyTime + numberOfHours;
     }
 }

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

@@ -5,4 +5,5 @@ public interface Teacher {
     public void teach(Learner learner, double numberOfHours);
 
     public void lecture(Learner[] learners, double numberOfHours);
+
 }

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

@@ -0,0 +1,65 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class InstructorTest {
+
+    @Test
+    public void testImplementation(){
+        Instructor newInstructor = new Instructor();
+        boolean expectedOutput = true;
+
+        boolean actualOutput = (newInstructor instanceof Teacher);
+
+        Assert.assertTrue(actualOutput);
+    }
+
+    @Test
+    public void testInheritance(){
+        Instructor newInstructor = new Instructor();
+        boolean expectedOutput = true;
+
+        boolean actualOutput = (newInstructor instanceof Person);
+
+        Assert.assertTrue(actualOutput);
+
+    }
+
+    @Test
+    public void testTeach(){
+        Instructor newInstructor = new Instructor();
+        Student newStudent = new Student();
+        newStudent.setTotalStudyTime(1.0);
+
+        double expectedOutput = 2.0;
+
+        newInstructor.teach(newStudent, 1.0);
+
+        double actualOutput = newStudent.getTotalStudyTime();
+
+        Assert.assertEquals(expectedOutput, actualOutput, .002);
+
+    }
+
+    @Test
+    public void testLecture(){
+        Instructor newInstructor = new Instructor();
+        Student newStudent = new Student();
+        newStudent.setTotalStudyTime(1.0);
+
+        Student newStudent2 = new Student();
+        newStudent2.setTotalStudyTime(1.0);
+
+        Student[] array =  {newStudent, newStudent2};
+
+        double expectedOutput = 2.5;
+
+        newInstructor.lecture(array, 3.0);
+
+        double actualOutput = newStudent2.getTotalStudyTime();
+
+        Assert.assertEquals(expectedOutput, actualOutput, .002);
+
+    }
+}

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

@@ -0,0 +1,52 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Test;
+import org.junit.Assert;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+
+public class PeopleTest {
+
+    People people1 = new People();
+    Person person1 = new Person();
+    Person person2 = new Person();
+    ArrayList <Person> array = new ArrayList<Person>();
+
+    @Test
+    public void addTest(){
+
+        int expectedOutput = 2;
+
+        people1.add(array, person1);
+        people1.add(array, person2);
+        int actualOutput = array.size();
+
+        Assert.assertEquals(expectedOutput, actualOutput);
+    }
+
+    @Test
+    public void removeByPersonTest(){
+        int expectedOutput = 0;
+
+        people1.removeByPerson(array, person1);
+        people1.removeByPerson(array, person2);
+        int actualOutput = people1.getCount(array);
+
+        Assert.assertEquals(expectedOutput, actualOutput);
+
+    }
+
+    @Test
+    public void removeByIdTest(){
+        people1.add(array, person1);
+        people1.add(array, person2);
+        int expectedOutput = 1;
+
+        people1.removeById(long id);
+        int actualOutput = people1.getCount(array);
+
+        Assert.assertEquals(expectedOutput, actualOutput);
+
+    }
+}

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

@@ -31,7 +31,9 @@ public class TestStudent {
         Student newStudent = new Student();
         double expectedOutput = 5;
 
-        double actualOutput = newStudent.learn(5);
+        newStudent.learn(5);
+
+        double actualOutput = newStudent.getTotalStudyTime();
 
         Assert.assertEquals(expectedOutput, actualOutput, .00);
     }