{progressing through up to part 6 for now}

.idea/.name

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

.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="8" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.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 +1,682 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="1691c4d3-c1b9-43dc-9250-95c93a250ec9" name="Default Changelist" comment="">
+      <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" />
+    </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="-1952372258">
+      <usages-collector id="statistics.lifecycle.project">
+        <counts>
+          <entry key="project.open.time.0" value="1" />
+          <entry key="project.opened" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.open">
+        <counts>
+          <entry key="java" value="12" />
+          <entry key="md" value="1" />
+          <entry key="project" value="1" />
+          <entry key="xml" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.open">
+        <counts>
+          <entry key="Eclipse" value="1" />
+          <entry key="JAVA" value="12" />
+          <entry key="Markdown" value="1" />
+          <entry key="XML" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.edit">
+        <counts>
+          <entry key="java" value="2090" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.edit">
+        <counts>
+          <entry key="JAVA" value="2090" />
+        </counts>
+      </usages-collector>
+    </session>
+  </component>
+  <component name="FileEditorManager">
+    <leaf>
+      <file pinned="false" current-in-tab="false">
+        <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="205">
+              <caret line="28" column="19" lean-forward="true" selection-start-line="28" selection-start-column="19" selection-end-line="28" selection-end-column="19" />
+              <folding>
+                <element signature="e#147#148#0" expanded="true" />
+                <element signature="e#169#170#0" expanded="true" />
+                <element signature="e#105#106#0" expanded="true" />
+                <element signature="e#133#134#0" expanded="true" />
+                <element signature="e#149#150#0" expanded="true" />
+                <element signature="e#182#183#0" expanded="true" />
+                <element signature="e#372#373#0" expanded="true" />
+                <element signature="e#399#400#0" expanded="true" />
+                <element signature="e#487#488#0" expanded="true" />
+                <element signature="e#519#520#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/Learner.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="34">
+              <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <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="34">
+              <caret line="2" column="18" selection-start-line="2" selection-start-column="18" selection-end-line="2" selection-end-column="18" />
+              <folding>
+                <element signature="e#117#118#0" expanded="true" />
+                <element signature="e#142#143#0" expanded="true" />
+                <element signature="e#239#240#0" expanded="true" />
+                <element signature="e#271#272#0" expanded="true" />
+                <element signature="e#331#332#0" expanded="true" />
+                <element signature="e#361#362#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/TestStudent.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="561">
+              <caret line="34" column="30" selection-start-line="34" selection-start-column="30" selection-end-line="34" selection-end-column="30" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <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="136">
+              <caret line="8" lean-forward="true" selection-start-line="8" selection-end-line="8" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <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="340">
+              <caret line="20" selection-start-line="20" selection-end-line="20" />
+              <folding>
+                <element signature="e#124#125#0" expanded="true" />
+                <element signature="e#149#150#0" expanded="true" />
+                <element signature="e#227#228#0" expanded="true" />
+                <element signature="e#249#250#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestInstructor.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="437">
+              <caret line="49" column="8" selection-start-line="49" selection-start-column="8" selection-end-line="49" selection-end-column="8" />
+              <folding>
+                <element signature="imports" 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/TestPerson.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="493">
+              <caret line="29" column="53" selection-start-line="29" selection-start-column="53" selection-end-line="29" selection-end-column="53" />
+              <folding>
+                <element signature="imports" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Interface" />
+        <option value="Class" />
+        <option value="JUnit4 Test Class" />
+      </list>
+    </option>
+  </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/main/java/io/zipcoder/interfaces/Person.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestStudent.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestInstructor.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="42" />
+    <option name="y" value="23" />
+    <option name="width" value="1286" />
+    <option name="height" value="712" />
+  </component>
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectView">
+    <navigator proportions="" version="1">
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <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>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
+      <pane id="PackagesPane" />
+    </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="1541958646110" />
+    <property name="com.intellij.testIntegration.createTest.CreateTestDialog.defaultLibrary" value="JUnit4" />
+    <property name="com.intellij.testIntegration.createTest.CreateTestDialog.defaultLibrarySuperClass.JUnit4" value="" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
+    <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="project.structure.last.edited" value="SDKs" />
+    <property name="project.structure.proportion" value="0.15" />
+    <property name="project.structure.side.proportion" value="0.2" />
+    <property name="settings.editor.selected.configurable" value="reference.projectsettings.compiler.javacompiler" />
+  </component>
+  <component name="RecentsManager">
+    <key name="CreateTestDialog.RecentsKey">
+      <recent name="io.zipcoder.interfaces" />
+    </key>
+    <key name="ExtractSuperBase.RECENT_KEYS">
+      <recent name="io.zipcoder.interfaces" />
+    </key>
+    <key name="CreateTestDialog.Recents.Supers">
+      <recent name="" />
+    </key>
+    <key name="CreateClassDialog.RecentsKey">
+      <recent name="io.zipcoder.interfaces" />
+    </key>
+  </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.TestInstructor.lectureTest">
+    <configuration name="TestInstructor.implementationTest" 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.TestInstructor" />
+      <option name="METHOD_NAME" value="implementationTest" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="TestInstructor.lectureTest" 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.TestInstructor" />
+      <option name="METHOD_NAME" value="lectureTest" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="TestInstructor.teachTest" 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.TestInstructor" />
+      <option name="METHOD_NAME" value="teachTest" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="TestStudent.implementationTest" 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.TestStudent" />
+      <option name="METHOD_NAME" value="implementationTest" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="TestStudent.learnTest" 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.TestStudent" />
+      <option name="METHOD_NAME" value="learnTest" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <list>
+      <item itemvalue="JUnit.TestStudent.implementationTest" />
+      <item itemvalue="JUnit.TestStudent.learnTest" />
+      <item itemvalue="JUnit.TestInstructor.implementationTest" />
+      <item itemvalue="JUnit.TestInstructor.teachTest" />
+      <item itemvalue="JUnit.TestInstructor.lectureTest" />
+    </list>
+    <recent_temporary>
+      <list>
+        <item itemvalue="JUnit.TestInstructor.lectureTest" />
+        <item itemvalue="JUnit.TestInstructor.teachTest" />
+        <item itemvalue="JUnit.TestInstructor.implementationTest" />
+        <item itemvalue="JUnit.TestStudent.learnTest" />
+        <item itemvalue="JUnit.TestStudent.implementationTest" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SvnConfiguration">
+    <configuration />
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="1691c4d3-c1b9-43dc-9250-95c93a250ec9" name="Default Changelist" comment="" />
+      <created>1541263186393</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1541263186393</updated>
+      <workItem from="1541263187731" duration="5974000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TestHistory">
+    <history-entry file="TestStudent_implementationTest - 2018.11.11 at 12h 14m 35s.xml">
+      <configuration name="TestStudent.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_implementationTest - 2018.11.11 at 12h 14m 49s.xml">
+      <configuration name="TestStudent.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_implementationTest - 2018.11.11 at 12h 15m 07s.xml">
+      <configuration name="TestStudent.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_implementationTest - 2018.11.11 at 12h 15m 14s.xml">
+      <configuration name="TestStudent.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_implementationTest - 2018.11.11 at 12h 15m 20s.xml">
+      <configuration name="TestStudent.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_learnTest - 2018.11.11 at 12h 25m 21s.xml">
+      <configuration name="TestStudent.learnTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_learnTest - 2018.11.11 at 12h 25m 29s.xml">
+      <configuration name="TestStudent.learnTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestStudent_learnTest - 2018.11.11 at 12h 25m 42s.xml">
+      <configuration name="TestStudent.learnTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestInstructor_implementationTest - 2018.11.11 at 12h 38m 13s.xml">
+      <configuration name="TestInstructor.implementationTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestInstructor_teachTest - 2018.11.11 at 12h 44m 39s.xml">
+      <configuration name="TestInstructor.teachTest" configurationId="JUnit" />
+    </history-entry>
+  </component>
+  <component name="TimeTrackingManager">
+    <option name="totallyTimeSpent" value="5974000" />
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="0" y="0" width="1280" height="800" 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 active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.28675282" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info anchor="bottom" id="Messages" weight="0.32876712" />
+      <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 anchor="bottom" id="Run" order="2" visible="true" weight="0.27945206" />
+      <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://$PROJECT_DIR$/.project">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/pom.xml">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/README.md">
+      <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
+        <state split_layout="SPLIT">
+          <first_editor relative-caret-position="-126">
+            <caret line="4" column="3" selection-start-line="4" selection-start-column="3" selection-end-line="4" selection-end-column="3" />
+          </first_editor>
+          <second_editor />
+        </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="205">
+          <caret line="28" column="19" lean-forward="true" selection-start-line="28" selection-start-column="19" selection-end-line="28" selection-end-column="19" />
+          <folding>
+            <element signature="e#147#148#0" expanded="true" />
+            <element signature="e#169#170#0" expanded="true" />
+            <element signature="e#105#106#0" expanded="true" />
+            <element signature="e#133#134#0" expanded="true" />
+            <element signature="e#149#150#0" expanded="true" />
+            <element signature="e#182#183#0" expanded="true" />
+            <element signature="e#372#373#0" expanded="true" />
+            <element signature="e#399#400#0" expanded="true" />
+            <element signature="e#487#488#0" expanded="true" />
+            <element signature="e#519#520#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="493">
+          <caret line="29" column="53" selection-start-line="29" selection-start-column="53" selection-end-line="29" selection-end-column="53" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="136">
+          <caret line="10" column="5" lean-forward="true" selection-start-line="10" selection-start-column="5" selection-end-line="10" selection-end-column="5" />
+        </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="34">
+          <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/Student.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="34">
+          <caret line="2" column="18" selection-start-line="2" selection-start-column="18" selection-end-line="2" selection-end-column="18" />
+          <folding>
+            <element signature="e#117#118#0" expanded="true" />
+            <element signature="e#142#143#0" expanded="true" />
+            <element signature="e#239#240#0" expanded="true" />
+            <element signature="e#271#272#0" expanded="true" />
+            <element signature="e#331#332#0" expanded="true" />
+            <element signature="e#361#362#0" expanded="true" />
+          </folding>
+        </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="561">
+          <caret line="34" column="30" selection-start-line="34" selection-start-column="30" selection-end-line="34" selection-end-column="30" />
+        </state>
+      </provider>
+    </entry>
+    <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="136">
+          <caret line="8" lean-forward="true" selection-start-line="8" selection-end-line="8" />
+        </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="340">
+          <caret line="20" selection-start-line="20" selection-end-line="20" />
+          <folding>
+            <element signature="e#124#125#0" expanded="true" />
+            <element signature="e#149#150#0" expanded="true" />
+            <element signature="e#227#228#0" expanded="true" />
+            <element signature="e#249#250#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestInstructor.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="437">
+          <caret line="49" column="8" selection-start-line="49" selection-start-column="8" selection-end-line="49" selection-end-column="8" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+  </component>
+  <component name="masterDetails">
+    <states>
+      <state key="ArtifactsStructureConfigurable.UI">
+        <settings>
+          <artifact-editor />
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="FacetStructureConfigurable.UI">
+        <settings>
+          <last-edited>No facets are configured</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="GlobalLibrariesConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="JdkListConfigurable.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ModuleStructureConfigurable.UI">
+        <settings>
+          <last-edited>interfaces-1</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+                <option value="0.6" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectLibrariesConfigurable.UI">
+        <settings>
+          <last-edited>Maven: junit:junit:4.12</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </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_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+  </component>
+</module>

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

@@ -0,0 +1,22 @@
+package io.zipcoder.interfaces;
+
+public class Instructor extends Person implements Teacher {
+    public Instructor(long id) {
+        super(id);
+    }
+
+    @Override
+    public void teach(Learner learner, double numberOfHours) {
+        learner.learn(numberOfHours);
+    }
+
+    @Override
+    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

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

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

@@ -1,5 +1,32 @@
 package io.zipcoder.interfaces;
 
 public class Person {
+    private final long id;
+    private String name;
 
+
+    public void testConstructor() {
+        long id = 0;
+    }
+
+    public Person(long id) {
+        this.id = id;
+    }
+
+    public long getId() {
+        return id;
+        }
+
+//    public Person(long id, String name) {
+//        this.id = id;
+//        this.name = name;
+//    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
 }

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

@@ -0,0 +1,18 @@
+package io.zipcoder.interfaces;
+
+public class Student extends Person implements Learner{
+    private double totalStudyTime;
+
+    public Student(long id) {
+        super(id);
+    }
+
+    @Override
+    public void learn(double numberOfHours) {
+        totalStudyTime += numberOfHours;
+    }
+
+    public double getTotalStudyTime() {
+        return totalStudyTime;
+    }
+}

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

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

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

@@ -0,0 +1,56 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class TestInstructor {
+
+    @Test
+    public void implementationTest() {
+        //given and when
+        Instructor instructor = new Instructor(123);
+
+        //then
+        Assert.assertTrue(instructor instanceof Teacher);
+    }
+
+    @Test
+    public void inheritanceTest() {
+        //given and when
+        Instructor instructor = new Instructor(123);
+
+        //then
+        Assert.assertTrue(instructor instanceof Person);
+    }
+
+    @Test
+    public void teachTest() {
+        //given
+        Instructor instructor = new Instructor(123);
+        Student student = new Student(000);
+
+        //when
+        instructor.teach(student, 12);
+
+        //then
+        Assert.assertEquals(12, student.getTotalStudyTime(), .001);
+    }
+
+    @Test
+    public void lectureTest() {
+        //given
+        Instructor instructor = new Instructor(123);
+        Student student = new Student(000);
+        Student student1 = new Student(001);
+        Learner [] learners = {student, student1};
+
+        //when
+        instructor.lecture(learners, 1000);
+
+        //then
+        Assert.assertEquals(500, student1.getTotalStudyTime(), .001);
+    }
+
+}

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

@@ -0,0 +1,4 @@
+package io.zipcoder.interfaces;
+
+public class TestPeople {
+}

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

@@ -1,5 +1,33 @@
 package io.zipcoder.interfaces;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 public class TestPerson {
+    @Test
+    public void testPersonConstructor() {
+        //given
+        Person person = new Person(12345);
+        long expected = 12345;
+        //when
+        person.getId();
+
+        //then
+        Assert.assertEquals(expected, person.getId());
+
+
+    }
+
+    @Test
+    public void setNameTest() {
+        //given
+        Person person = new Person(90);
+
+        //when
+        person.setName("Jae");
+
+        //then
+        Assert.assertEquals("Jae", person.getName());
 
+    }
 }

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

@@ -0,0 +1,40 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestStudent {
+
+    @Test
+    public void implementationTest() {
+        //given and when
+        Student student = new Student(123);
+
+        //then
+        Assert.assertTrue(student instanceof Learner);
+    }
+    
+    @Test
+    public void inheritanceTest() {
+        //given and when
+        Student student = new Student(123);
+
+        //then
+        Assert.assertTrue(student instanceof Person);
+    }
+
+    @Test
+    public void learnTest() {
+        //given
+        Student student = new Student(123);
+
+        //when
+        student.learn(123);
+
+        //then
+        Assert.assertEquals(123, student.getTotalStudyTime(), .001);
+    }
+
+
+
+}