Completed

.idea/.name

@@ -0,0 +1 @@
+interfaces-1

.idea/codeStyles/Project.xml

@@ -0,0 +1,6 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <option name="LINE_SEPARATOR" value="&#13;" />
+    <option name="WRAP_WHEN_TYPING_REACHES_RIGHT_MARGIN" value="true" />
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/compiler.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="interfaces-1" />
+      </profile>
+    </annotationProcessing>
+    <bytecodeTargetLevel>
+      <module name="interfaces-1" target="1.5" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.idea/dictionaries/chaitalipatel.xml

@@ -0,0 +1,3 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="chaitalipatel" />
+</component>

.idea/encodings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$" charset="UTF-8" />
+  </component>
+</project>

.idea/libraries/Maven__junit_junit_4_12.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: junit:junit:4.12">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/misc.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/classes" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/interfaces-1.iml" filepath="$PROJECT_DIR$/interfaces-1.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

.idea/workspace.xml

@@ -0,0 +1,667 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="8138bc5d-6db1-47c1-b508-e0c3ac4388d2" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/.idea/codeStyles/Project.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/codeStyles/codeStyleConfig.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/compiler.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/dictionaries/chaitalipatel.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/encodings.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/libraries/Maven__junit_junit_4_12.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/modules.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/vcs.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/interfaces-1.iml" 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/Instructors.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/ZipCodeWilmington.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/InstructorTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PersonTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/ZipCodeWilmingtonTest.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" />
+    </list>
+    <ignored path="$PROJECT_DIR$/target/" />
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FUSProjectUsageTrigger">
+    <session id="868334394">
+      <usages-collector id="statistics.lifecycle.project">
+        <counts>
+          <entry key="project.open.time.2" value="1" />
+          <entry key="project.opened" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.open">
+        <counts>
+          <entry key="class" value="1" />
+          <entry key="java" value="14" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.open">
+        <counts>
+          <entry key="CLASS" value="1" />
+          <entry key="JAVA" value="14" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.edit">
+        <counts>
+          <entry key="java" value="443" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.edit">
+        <counts>
+          <entry key="JAVA" value="443" />
+        </counts>
+      </usages-collector>
+    </session>
+  </component>
+  <component name="FileEditorManager">
+    <splitter split-orientation="horizontal" split-proportion="0.5">
+      <split-first>
+        <leaf>
+          <file pinned="false" current-in-tab="false">
+            <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="30">
+                  <caret line="2" column="13" selection-start-line="2" selection-start-column="13" selection-end-line="2" selection-end-column="13" />
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="75">
+                  <caret line="5" column="60" lean-forward="true" selection-start-line="5" selection-start-column="4" selection-end-line="5" selection-end-column="60" />
+                  <folding>
+                    <element signature="e#2497#2498#0" expanded="true" />
+                    <element signature="e#2528#2529#0" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="345">
+                  <caret line="26" column="1" lean-forward="true" selection-start-line="26" selection-start-column="1" selection-end-line="26" selection-end-column="1" />
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/ZipCodeWilmington.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="390">
+                  <caret line="26" lean-forward="true" selection-start-line="26" selection-end-line="26" />
+                  <folding>
+                    <element signature="e#242#243#0" expanded="true" />
+                    <element signature="e#276#277#0" expanded="true" />
+                    <element signature="e#691#692#0" expanded="true" />
+                    <element signature="e#722#723#0" expanded="true" />
+                    <element signature="e#772#773#0" expanded="true" />
+                    <element signature="e#806#807#0" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="true">
+            <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="45">
+                  <caret line="3" column="43" lean-forward="true" selection-start-line="3" selection-start-column="43" selection-end-line="3" selection-end-column="43" />
+                  <folding>
+                    <element signature="e#137#138#0" expanded="true" />
+                    <element signature="e#168#169#0" expanded="true" />
+                    <element signature="e#202#203#0" expanded="true" />
+                    <element signature="e#227#228#0" expanded="true" />
+                    <element signature="e#291#292#0" expanded="true" />
+                    <element signature="e#335#336#0" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <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="264">
+                  <caret line="24" column="41" lean-forward="true" selection-start-line="24" selection-start-column="41" selection-end-line="24" selection-end-column="41" />
+                  <folding>
+                    <element signature="e#198#199#0" expanded="true" />
+                    <element signature="e#242#243#0" expanded="true" />
+                    <element signature="e#809#810#0" expanded="true" />
+                    <element signature="e#856#857#0" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+        </leaf>
+      </split-first>
+      <split-second>
+        <leaf>
+          <file pinned="false" current-in-tab="true">
+            <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/ZipCodeWilmingtonTest.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="234">
+                  <caret line="13" column="26" selection-start-line="13" selection-start-column="26" selection-end-line="13" selection-end-column="26" />
+                  <folding>
+                    <element signature="imports" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="315">
+                  <caret line="21" column="26" lean-forward="true" selection-start-line="21" selection-start-column="26" selection-end-line="21" selection-end-column="26" />
+                  <folding>
+                    <element signature="e#196#197#0" expanded="true" />
+                    <element signature="e#230#231#0" expanded="true" />
+                  </folding>
+                </state>
+              </provider>
+            </entry>
+          </file>
+          <file pinned="false" current-in-tab="false">
+            <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java">
+              <provider selected="true" editor-type-id="text-editor">
+                <state relative-caret-position="15">
+                  <caret line="1" lean-forward="true" selection-start-line="1" selection-end-line="1" />
+                </state>
+              </provider>
+            </entry>
+          </file>
+        </leaf>
+      </split-second>
+    </splitter>
+  </component>
+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>studs</find>
+    </findStrings>
+    <replaceStrings>
+      <replace>Instructor</replace>
+      <replace>instructor</replace>
+    </replaceStrings>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/ZipCodeWilmington.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/ZipCodeWilmingtonTest.java" />
+      </list>
+    </option>
+  </component>
+  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
+  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER" />
+  <component name="JsGulpfileManager">
+    <detection-done>true</detection-done>
+    <sorting>DEFINITION_ORDER</sorting>
+  </component>
+  <component name="ProjectFrameBounds" fullScreen="true">
+    <option name="x" value="-296" />
+    <option name="y" value="-1080" />
+    <option name="width" value="1920" />
+    <option name="height" value="1080" />
+  </component>
+  <component name="ProjectInspectionProfilesVisibleTreeState">
+    <entry key="Project Default">
+      <profile-state>
+        <expanded-state>
+          <State />
+          <State>
+            <id>Android</id>
+          </State>
+          <State>
+            <id>CSS</id>
+          </State>
+          <State>
+            <id>CorrectnessLintAndroid</id>
+          </State>
+          <State>
+            <id>Java</id>
+          </State>
+          <State>
+            <id>LintAndroid</id>
+          </State>
+          <State>
+            <id>Probable bugsCSS</id>
+          </State>
+          <State>
+            <id>Probable bugsJava</id>
+          </State>
+          <State>
+            <id>RELAX NG</id>
+          </State>
+          <State>
+            <id>XPath</id>
+          </State>
+          <State>
+            <id>XSLT</id>
+          </State>
+        </expanded-state>
+        <selected-state>
+          <State>
+            <id>Android</id>
+          </State>
+        </selected-state>
+      </profile-state>
+    </entry>
+  </component>
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectView">
+    <navigator proportions="" version="1">
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="PackagesPane" />
+      <pane id="Scope" />
+      <pane id="ProjectPane">
+        <subPane>
+          <expand>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="main" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="main" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="main" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+              <item name="interfaces" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="test" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="test" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="test" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+              <item name="interfaces" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="interfaces-1" type="b2602c69:ProjectViewProjectNode" />
+              <item name="CR-MacroLabs-OOP-InstructorStudentClassroom" type="462c0819:PsiDirectoryNode" />
+              <item name="target" type="462c0819:PsiDirectoryNode" />
+            </path>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
+    </panes>
+  </component>
+  <component name="PropertiesComponent">
+    <property name="WebServerToolWindowFactoryState" value="false" />
+    <property name="aspect.path.notification.shown" value="true" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1542476581883" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/pom.xml" />
+    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
+    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
+    <property name="settings.editor.selected.configurable" value="preferences.sourceCode" />
+  </component>
+  <component name="RunDashboard">
+    <option name="ruleStates">
+      <list>
+        <RuleState>
+          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
+        </RuleState>
+        <RuleState>
+          <option name="name" value="StatusDashboardGroupingRule" />
+        </RuleState>
+      </list>
+    </option>
+  </component>
+  <component name="RunManager" selected="JUnit.ZipCodeWilmingtonTest">
+    <configuration name="InstructorsTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="interfaces-1" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="io.zipcoder.interfaces.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorsTest" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="InstructorsTest.getInstance" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="interfaces-1" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="io.zipcoder.interfaces.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorsTest" />
+      <option name="METHOD_NAME" value="getInstance" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ZipCodeWilmingtonTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="interfaces-1" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="io.zipcoder.interfaces.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.ZipCodeWilmingtonTest" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ZipCodeWilmingtonTest.hostLecture" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="interfaces-1" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="io.zipcoder.interfaces.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.ZipCodeWilmingtonTest" />
+      <option name="METHOD_NAME" value="hostLecture" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="ZipCodeWilmingtonTest.hostLectureById" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="interfaces-1" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="io.zipcoder.interfaces.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.ZipCodeWilmingtonTest" />
+      <option name="METHOD_NAME" value="hostLectureById" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <list>
+      <item itemvalue="JUnit.InstructorsTest.getInstance" />
+      <item itemvalue="JUnit.InstructorsTest" />
+      <item itemvalue="JUnit.ZipCodeWilmingtonTest.hostLecture" />
+      <item itemvalue="JUnit.ZipCodeWilmingtonTest.hostLectureById" />
+      <item itemvalue="JUnit.ZipCodeWilmingtonTest" />
+    </list>
+    <recent_temporary>
+      <list>
+        <item itemvalue="JUnit.ZipCodeWilmingtonTest" />
+        <item itemvalue="JUnit.ZipCodeWilmingtonTest.hostLectureById" />
+        <item itemvalue="JUnit.ZipCodeWilmingtonTest.hostLecture" />
+        <item itemvalue="JUnit.InstructorsTest" />
+        <item itemvalue="JUnit.InstructorsTest.getInstance" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SvnConfiguration">
+    <configuration />
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="8138bc5d-6db1-47c1-b508-e0c3ac4388d2" name="Default Changelist" comment="" />
+      <created>1542472970328</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1542472970328</updated>
+      <workItem from="1542472973538" duration="3597000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TestHistory">
+    <history-entry file="StudentsTest - 2018.11.17 at 11h 48m 12s.xml">
+      <configuration name="StudentsTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorsTest_getInstance - 2018.11.17 at 12h 00m 16s.xml">
+      <configuration name="InstructorsTest.getInstance" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorsTest - 2018.11.17 at 12h 00m 36s.xml">
+      <configuration name="InstructorsTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorsTest - 2018.11.17 at 12h 02m 54s.xml">
+      <configuration name="InstructorsTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorsTest - 2018.11.17 at 12h 07m 40s.xml">
+      <configuration name="InstructorsTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="InstructorsTest - 2018.11.17 at 12h 09m 24s.xml">
+      <configuration name="InstructorsTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ZipCodeWilmingtonTest_hostLecture - 2018.11.17 at 12h 39m 03s.xml">
+      <configuration name="ZipCodeWilmingtonTest.hostLecture" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ZipCodeWilmingtonTest_hostLectureById - 2018.11.17 at 12h 41m 39s.xml">
+      <configuration name="ZipCodeWilmingtonTest.hostLectureById" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ZipCodeWilmingtonTest - 2018.11.17 at 12h 42m 02s.xml">
+      <configuration name="ZipCodeWilmingtonTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="ZipCodeWilmingtonTest - 2018.11.17 at 12h 42m 39s.xml">
+      <configuration name="ZipCodeWilmingtonTest" configurationId="JUnit" />
+    </history-entry>
+  </component>
+  <component name="TimeTrackingManager">
+    <option name="totallyTimeSpent" value="3597000" />
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="-296" y="-1080" width="1920" height="1080" extended-state="0" />
+    <editor active="true" />
+    <layout>
+      <window_info id="Image Layers" />
+      <window_info id="Designer" />
+      <window_info id="UI Designer" />
+      <window_info id="Capture Tool" />
+      <window_info id="Favorites" side_tool="true" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.12673056" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info anchor="bottom" id="Messages" weight="0.32970297" />
+      <window_info anchor="bottom" id="Database Changes" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Version Control" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Terminal" />
+      <window_info anchor="bottom" id="Event Log" side_tool="true" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32970297" />
+      <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="right" id="Palette" />
+      <window_info anchor="right" id="Theme Preview" />
+      <window_info anchor="right" id="Capture Analysis" />
+      <window_info anchor="right" id="Palette&#9;" />
+      <window_info anchor="right" id="Database" />
+      <window_info anchor="right" id="Maven Projects" />
+      <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" />
+    </layout>
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="1" />
+  </component>
+  <component name="VcsContentAnnotationSettings">
+    <option name="myLimit" value="2678400000" />
+  </component>
+  <component name="editorHistoryManager">
+    <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="-267">
+          <caret line="7" column="13" selection-start-line="7" selection-start-column="13" selection-end-line="7" selection-end-column="13" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/org/junit/Assert.class">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="217">
+          <caret line="333" selection-start-line="333" selection-end-line="333" />
+        </state>
+      </provider>
+    </entry>
+    <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="264">
+          <caret line="24" column="41" lean-forward="true" selection-start-line="24" selection-start-column="41" selection-end-line="24" selection-end-column="41" />
+          <folding>
+            <element signature="e#198#199#0" expanded="true" />
+            <element signature="e#242#243#0" expanded="true" />
+            <element signature="e#809#810#0" expanded="true" />
+            <element signature="e#856#857#0" expanded="true" />
+          </folding>
+        </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="30">
+          <caret line="2" column="13" selection-start-line="2" selection-start-column="13" selection-end-line="2" selection-end-column="13" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="75">
+          <caret line="5" column="60" lean-forward="true" selection-start-line="5" selection-start-column="4" selection-end-line="5" selection-end-column="60" />
+          <folding>
+            <element signature="e#2497#2498#0" expanded="true" />
+            <element signature="e#2528#2529#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="15">
+          <caret line="1" lean-forward="true" selection-start-line="1" selection-end-line="1" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/ZipCodeWilmington.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="390">
+          <caret line="26" lean-forward="true" selection-start-line="26" selection-end-line="26" />
+          <folding>
+            <element signature="e#242#243#0" expanded="true" />
+            <element signature="e#276#277#0" expanded="true" />
+            <element signature="e#691#692#0" expanded="true" />
+            <element signature="e#722#723#0" expanded="true" />
+            <element signature="e#772#773#0" expanded="true" />
+            <element signature="e#806#807#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="315">
+          <caret line="21" column="26" lean-forward="true" selection-start-line="21" selection-start-column="26" selection-end-line="21" selection-end-column="26" />
+          <folding>
+            <element signature="e#196#197#0" expanded="true" />
+            <element signature="e#230#231#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="345">
+          <caret line="26" column="1" lean-forward="true" selection-start-line="26" selection-start-column="1" selection-end-line="26" selection-end-column="1" />
+        </state>
+      </provider>
+    </entry>
+    <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="45">
+          <caret line="3" column="43" lean-forward="true" selection-start-line="3" selection-start-column="43" selection-end-line="3" selection-end-column="43" />
+          <folding>
+            <element signature="e#137#138#0" expanded="true" />
+            <element signature="e#168#169#0" expanded="true" />
+            <element signature="e#202#203#0" expanded="true" />
+            <element signature="e#227#228#0" expanded="true" />
+            <element signature="e#291#292#0" expanded="true" />
+            <element signature="e#335#336#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/ZipCodeWilmingtonTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="234">
+          <caret line="13" column="26" selection-start-line="13" selection-start-column="26" selection-end-line="13" selection-end-column="26" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+  </component>
+</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/Instructor.java

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public class Instructor extends Person implements Teacher {
    public Instructor(String name, long id) {
        super(name, id);
    }

    public Instructor(long id) {
        super(id);
    }

    public void teach(Learner learner, double numberOfHours) {
        learner.learn(numberOfHours);
    }

    public void Lecture(Learner[] learners, double numberOfHours) {
        double numberOfHoursPerLearner = numberOfHours / learners.length;
        for(Learner learner: learners) {
            learner.learn(numberOfHoursPerLearner);
        }
    }


}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public class Instructors extends People<Instructor> {
    private static final Instructors ourInstance = new Instructors();

    public static Instructors getInstance() {
        return ourInstance;
    }

    private Instructors() {
        personList.add(new Instructor("Will",2));
        personList.add(new Instructor("Dolio",4));
        personList.add(new Instructor("Kris",7));
        personList.add(new Instructor("Nhu",8));
    }

    @Override
    public Instructor[] getArray() {
        Instructor[] instructor = new Instructor[personList.size()];
        for(int i = 0; i < personList.size(); i++)
            instructor[i] = personList.get(i);
        return instructor;
    }
}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public interface Learner {
    void learn(double numberOfHours);
}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import java.util.ArrayList;

public abstract class People <E extends Person> {

        ArrayList<E> personList = new ArrayList<E>();


    public void add(E person){
           personList.add(person);
       }

        public E findByID(long id){
           E personToFind = null;
            for (int i = 0; i < personList.size(); i++) {
                if(personList.get(i).getId() == id) {
                    personToFind = personList.get(i);
                }
            }

            return personToFind;
        }

        public void removeById(long id) {
           for(E p: personList) {
               if (p.getId() == id) {
                   personList.remove(p);
                   break;
               }
           }
        }

        public int getCount(){
           return personList.size();
        }

        public abstract E[] getArray();

        public boolean removeAll(){
           ArrayList<E> array = new ArrayList<E>();
           return personList.removeAll(array);
        }
}

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

@@ -1,5 +1,31 @@
 package io.zipcoder.interfaces;
 
 public class Person {
+    private final long id;
+    private String name;
 
+    public Person() {
+        id = 0;
+    }
+
+    public Person(long id) {
+        this.id = id;
+    }
+
+    public Person(String name, long id) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
 }

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public class Student extends Person implements Learner{
    private double totalStudyTime;

    public Student() {
        super();
    }

    public Student(String name,long id) {
        super(name, id);

    }

    public void learn(double numberOfHours) {
        totalStudyTime+=numberOfHours;
    }

    public double getTotalStudyTime() {
        return totalStudyTime;
    }
}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;
import java.util.*;

public class Students extends People <Student> {

    private static final Students INSTANCE = new Students();
    private Students(){

        personList.add(new Student( "Ned Redmond",1));
        personList.add(new Student( "Seth Abrams",2));
        personList.add(new Student( "Akeem Cherry",3));
        personList.add(new Student( "Whitney Martinez",4));
        personList.add(new Student( "Nira Parikh",5));
        personList.add(new Student( "Connor Dunnigan",6));
        personList.add(new Student( "Christian Sheridan",7));
        personList.add(new Student( "Curtis Cook",8));
        personList.add(new Student( "Nuridalia Hernandez",9));
        personList.add(new Student( "Brandon DeFrancis",10));
        personList.add(new Student( "De'Jon Johnson",11));
        personList.add(new Student( "Demetrius Murray",12));
        personList.add(new Student( "Elliott Stansbury",13));
        personList.add(new Student( "Nathan Hall",14));
        personList.add(new Student( "Jae Joson",15));
        personList.add(new Student( "Jacob Anderson",16));
        personList.add(new Student( "Jose Bedolla",17));
        personList.add(new Student( "Jenn Chao",18));
        personList.add(new Student( "Jennifer Tinkler",19));
        personList.add(new Student( "Jonathan Hinds",20));
        personList.add(new Student( "Jay Samuels",21));
        personList.add(new Student( "Jevit Tith",22));
        personList.add(new Student( "Lauren Green",23));
        personList.add(new Student( "Kate Moore",24));
        personList.add(new Student( "Michelle DiMarino",25));
        personList.add(new Student( "Maggie Pierse",26));
        personList.add(new Student( "Nick Satinover",27));
        personList.add(new Student( "Chaitali Patel",28));
        personList.add(new Student( "Yesoda Sanka",29));
        personList.add(new Student( "Saurav Kamath",30));
        personList.add(new Student( "Sam Bhutani",31));
        personList.add(new Student( "Soujanya Buragapu",32));
        personList.add(new Student( "Steffon Williams",33));
        personList.add(new Student( "Zavon Malone",34));
        personList.add(new Student( "Thuy Kong",35));
        personList.add(new Student( "Thulasi Puppala",36));
        personList.add(new Student( "Trinh Tong",37));
        personList.add(new Student( "William Brown",38));
        personList.add(new Student( "Xzavia Cuello",39));
    }

    public static Students getInstance(){
        return INSTANCE;
    }

    @Override
    public Student[] getArray(){
        Student[] studs = new Student[personList.size()];
        for(int i = 0; i < personList.size(); i++)
            studs[i] = personList.get(i);
        return studs;
    }
}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public interface Teacher {

    void teach(Learner learner, double numberOfHours);

    void Lecture(Learner[] learners, double numberOfHours);

}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

public class ZipCodeWilmington {
    private static final Students students = Students.getInstance();
    private static final Instructors instructors = Instructors.getInstance();
    private static final ZipCodeWilmington INSTANCE = new ZipCodeWilmington();

    public static ZipCodeWilmington getInstance() {
        return INSTANCE;
    }

    private ZipCodeWilmington() {
    }

    public void hostLecture(Teacher teacher, double numberOfHours) {
        Student[] students1 = students.getArray();
        teacher.Lecture(students1,numberOfHours);
    }

    public void hostLecture(long id, double numberOfHours) {
        Student[] students1 = students.getArray();
        for (int i = 0; i < instructors.getCount(); i++) {
            if (instructors.personList.get(i).getId()==id) {
                instructors.personList.get(i).Lecture(students1,numberOfHours);
            }
        }

    }

    public static Students getStudents() {
        return students;
    }

    public static Instructors getInstructors() {
        return instructors;
    }


}

src/test/java/InstructorTest.java

@@ -0,0 +1 @@
+import io.zipcoder.interfaces.*;
import org.junit.Assert;
import org.junit.Test;

//public class InstructorTest {
//    Instructor instructor = new Instructor(0L);
//    Student student = new Student(4);
//    Student student2 = new Student(5);
//    Student[] studentArray = {student,student2};
//
//    @Test
//    public void testImplementation() {
//
//        Assert.assertTrue(instructor instanceof Teacher);
//
//    }
//
//    @Test
//    public void testInheritance() {
//
//        Assert.assertTrue(instructor instanceof Person);
//    }
//
//    @Test
//    public void testTeach() {
//        //Given
//        double hour = 4.0;
//
//
//        double expected = 4.0;
//
//        //When
//         instructor.teach(student,hour);
//
//         //than
//        Assert.assertEquals(expected,student.getTotalStudyTime(),0);
//    }
//
//    @Test
//    public void testLecture() {
//        //Given
//        double expected = 2;
//
//        //when
//        instructor.Lecture(studentArray, 4);
//        double actual = student.getTotalStudyTime();
//
//        Assert.assertEquals(expected,actual, 0.01);
//
//   }
//}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import org.junit.Assert;
import org.junit.Test;

import static org.junit.Assert.*;

public class InstructorsTest {

    @Test
    public void getInstance() {

            Instructors instructors2 = Instructors.getInstance();
            Instructors instructors3 = Instructors.getInstance();

            Assert.assertEquals(instructors2,instructors3);

    }

    @Test
    public void theInitializationSetupStudents(){
        Instructors instructors2 = Instructors.getInstance();
        int expected = 4;
        int actual = instructors2.getArray().length;
        Assert.assertEquals(expected,actual);
    }
}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import org.junit.Assert;
import org.junit.Test;

import static org.junit.Assert.*;

public class PeopleTest {

 Person person1, person2;
 Student student1;
 Instructor instructor;
 Students students;
 Instructors instructors;

 public PeopleTest() {
     students = Students.getInstance();

     person1 = new Person("person1",45);
     person2 = new Person("person2", 56);
     student1 = new Student("student1",50);
     instructor = new Instructor("instructor1",54);
     students.add(student1);
 }

 @Test
    public void addTest(){
     //Given
     Student newStudent = new Student("student2",43);

     //When
     Integer expected = 41;
     students.add(newStudent);
     Integer actual = students.getCount();

     //Then
     Assert.assertEquals(expected,actual);

 }

    @Test
    public void findByIdTest(){
        //When
        long expected = student1.getId();

        Student actual = students.findByID(50);

        //Then
        Assert.assertEquals(expected,actual.getId());

    }

    @Test
    public void removeTest(){
        //When
        Integer expected = 39;

        students.removeById(50);
        Integer actual = students.getCount();

        //Then
        Assert.assertEquals(expected,actual);

    }

    @Test
    public void removeAllTest(){

       //Given
        Instructors instructors = Instructors.getInstance();

        //When

        Integer expected = 0;

        instructors.removeAll();
        Integer actual = instructors.getCount();

        //Then
        Assert.assertEquals(expected,actual);

    }

}

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

@@ -0,0 +1,35 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class PersonTest {
+
+    @Test
+    public void testConstructor(){
+        //Given
+        Person p = new Person(24);
+        long expected = 24l ;
+
+        //When
+        long actual = p.getId();
+
+        //Than
+        Assert.assertEquals(expected,actual);
+    }
+
+    @Test
+    public void testSetName(){
+        //Given
+        Person p = new Person(24);
+        String expected = p.getName();
+
+        //When
+        String actual = "Chaitali";
+       p.setName("Chaitali");
+
+        //Than
+        Assert.assertEquals(expected,actual);
+    }
+
+}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import org.junit.Assert;
import org.junit.Test;

public class StudentTest {
    @Test
    public void testImplementation(){
        //Given
        Student student = new Student();

        Assert.assertTrue(student instanceof Learner);

    }

    @Test
    public void testInheritance(){
        //Given
        Person student = new Person(24);

        Assert.assertTrue(student instanceof Person);

    }

    @Test
    public void testLearn(){
        //Given
        double numberOfHours = 500;
        Student student = new Student();

        //When
        student.learn(numberOfHours);
        double actual = student.getTotalStudyTime();
        double expected = 500;

        //Then
        Assert.assertEquals(expected, actual, 0);

    }


}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import org.junit.Assert;
import org.junit.Test;


public class StudentsTest {

    @Test
    public void getInstance() {
        Students student1 = Students.getInstance();
        Students student2 = Students.getInstance();

        Assert.assertEquals(student1,student2);
    }

    @Test
    public void theInitializationSetupStudents(){
        Students student1 = Students.getInstance();
        int expected = 39;
        int actual = student1.getArray().length;
        Assert.assertEquals(expected,actual);
    }
}

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

@@ -1,5 +0,0 @@
-package io.zipcoder.interfaces;
-
-public class TestPerson {
-
-}

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

@@ -0,0 +1 @@
+package io.zipcoder.interfaces;

import org.junit.Assert;
import org.junit.Test;

public class ZipCodeWilmingtonTest {


    @Test
    public void hostLecture() {
        ZipCodeWilmington zipCode = ZipCodeWilmington.getInstance();
        Instructor instructor = zipCode.getInstructors().getArray()[0];
        zipCode.hostLecture(instructor,39);
        double expected =2;
        double actual = zipCode.getStudents().getArray()[0].getTotalStudyTime();

        Assert.assertEquals(expected,actual,.1);
    }

    @Test
    public void hostLectureById() {
        ZipCodeWilmington zipCode = ZipCodeWilmington.getInstance();
        Instructor instructor = zipCode.getInstructors().getArray()[0];
        zipCode.hostLecture(instructor.getId(),39);
        double expected =1;
        double actual = zipCode.getStudents().getArray()[0].getTotalStudyTime();

        Assert.assertEquals(expected,actual,.1);
    }
}