diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index ff08899..9926068 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,14 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="4daf260f-e209-422f-9cb7-32bf6875ee9f" name="Default" comment="">
-      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/src/Seccion7/Funciones.kt" />
-      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/src/Seccion7/InlineFunctions.kt" />
-      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/src/Seccion7/Overloading.kt" />
-      <change type="NEW" beforePath="" afterPath="$PROJECT_DIR$/src/Seccion7/Poliformismo.kt" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/out/production/KotlinBasics/META-INF/KotlinBasics.kotlin_module" afterPath="$PROJECT_DIR$/out/production/KotlinBasics/META-INF/KotlinBasics.kotlin_module" />
-      <change type="MODIFICATION" beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
-    </list>
+    <list default="true" id="4daf260f-e209-422f-9cb7-32bf6875ee9f" name="Default" comment="" />
     <ignored path="$PROJECT_DIR$/out/" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="TRACKING_ENABLED" value="true" />
@@ -19,20 +12,10 @@
   </component>
   <component name="FileEditorManager">
     <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file leaf-file-name="Array.kt" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/Seccion6/Array.kt">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="0">
-              <caret line="23" column="0" lean-forward="false" selection-start-line="23" selection-start-column="0" selection-end-line="23" selection-end-column="0" />
-              <folding />
-            </state>
-          </provider>
-        </entry>
-      </file>
       <file leaf-file-name="ArrayList.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion6/ArrayList.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-7">
+            <state relative-caret-position="578">
               <caret line="34" column="18" lean-forward="false" selection-start-line="34" selection-start-column="18" selection-end-line="34" selection-end-column="18" />
               <folding />
             </state>
@@ -42,7 +25,7 @@
       <file leaf-file-name="HashMap.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion6/HashMap.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-7">
+            <state relative-caret-position="187">
               <caret line="11" column="11" lean-forward="false" selection-start-line="11" selection-start-column="11" selection-end-line="11" selection-end-column="11" />
               <folding />
             </state>
@@ -52,7 +35,7 @@
       <file leaf-file-name="Colecciones.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion6/Colecciones.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-7">
+            <state relative-caret-position="238">
               <caret line="14" column="4" lean-forward="false" selection-start-line="14" selection-start-column="4" selection-end-line="18" selection-end-column="5" />
               <folding />
             </state>
@@ -62,7 +45,7 @@
       <file leaf-file-name="MutableInmutable.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion6/MutableInmutable.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-7">
+            <state relative-caret-position="357">
               <caret line="21" column="36" lean-forward="false" selection-start-line="21" selection-start-column="36" selection-end-line="21" selection-end-column="36" />
               <folding />
             </state>
@@ -72,7 +55,7 @@
       <file leaf-file-name="TreeMap.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion6/TreeMap.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="285">
+            <state relative-caret-position="323">
               <caret line="19" column="28" lean-forward="false" selection-start-line="19" selection-start-column="28" selection-end-line="19" selection-end-column="28" />
               <folding />
             </state>
@@ -82,7 +65,7 @@
       <file leaf-file-name="Funciones.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion7/Funciones.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="30">
+            <state relative-caret-position="34">
               <caret line="2" column="0" lean-forward="false" selection-start-line="2" selection-start-column="0" selection-end-line="6" selection-end-column="0" />
               <folding />
             </state>
@@ -92,7 +75,7 @@
       <file leaf-file-name="Overloading.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion7/Overloading.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="30">
+            <state relative-caret-position="34">
               <caret line="2" column="25" lean-forward="false" selection-start-line="2" selection-start-column="25" selection-end-line="2" selection-end-column="25" />
               <folding />
             </state>
@@ -102,18 +85,28 @@
       <file leaf-file-name="InlineFunctions.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion7/InlineFunctions.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="71">
-              <caret line="6" column="15" lean-forward="true" selection-start-line="6" selection-start-column="15" selection-end-line="6" selection-end-column="15" />
+            <state relative-caret-position="102">
+              <caret line="6" column="15" lean-forward="false" selection-start-line="6" selection-start-column="15" selection-end-line="6" selection-end-column="15" />
               <folding />
             </state>
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="Poliformismo.kt" pinned="false" current-in-tab="true">
+      <file leaf-file-name="Poliformismo.kt" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/Seccion7/Poliformismo.kt">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="128">
-              <caret line="23" column="19" lean-forward="true" selection-start-line="23" selection-start-column="19" selection-end-line="23" selection-end-column="19" />
+            <state relative-caret-position="135">
+              <caret line="23" column="19" lean-forward="false" selection-start-line="23" selection-start-column="19" selection-end-line="23" selection-end-column="19" />
+              <folding />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="Constructor.kt" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/src/Seccion8/Constructor.kt">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="-17">
+              <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
               <folding />
             </state>
           </provider>
@@ -180,8 +173,8 @@
     <sorting>DEFINITION_ORDER</sorting>
   </component>
   <component name="ProjectFrameBounds">
-    <option name="x" value="497" />
-    <option name="y" value="194" />
+    <option name="x" value="91" />
+    <option name="y" value="173" />
     <option name="width" value="1280" />
     <option name="height" value="415" />
   </component>
@@ -203,6 +196,8 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
+      <pane id="AndroidView" />
+      <pane id="Scratches" />
       <pane id="PackagesPane" />
       <pane id="ProjectPane">
         <subPane>
@@ -222,13 +217,17 @@
               <item name="src" type="462c0819:PsiDirectoryNode" />
               <item name="Seccion7" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="KotlinBasics" type="b2602c69:ProjectViewProjectNode" />
+              <item name="KotlinBasics" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="Seccion8" type="462c0819:PsiDirectoryNode" />
+            </path>
           </expand>
           <select />
         </subPane>
       </pane>
-      <pane id="Scratches" />
       <pane id="Scope" />
-      <pane id="AndroidView" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -431,24 +430,22 @@
     <option name="totallyTimeSpent" value="2479000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="497" y="194" width="1280" height="415" extended-state="0" />
+    <frame x="91" y="173" width="1280" height="415" extended-state="0" />
     <editor active="true" />
     <layout>
       <window_info id="Palette" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
-      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.3265306" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Palette&#9;" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Image Layers" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Analysis" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
       <window_info id="Event Log" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="true" content_ui="tabs" />
       <window_info id="Maven Projects" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="3" side_tool="false" content_ui="tabs" />
-      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.40233237" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
+      <window_info id="Run" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.40233237" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Version Control" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Terminal" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Capture Tool" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
       <window_info id="Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
-      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.2421875" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
-      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="-1" side_tool="false" content_ui="tabs" />
+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.2420886" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
       <window_info id="Structure" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="Ant Build" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
       <window_info id="UI Designer" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="2" side_tool="false" content_ui="tabs" />
@@ -459,6 +456,8 @@
       <window_info id="Message" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Commander" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="0" side_tool="false" content_ui="tabs" />
       <window_info id="Hierarchy" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.25" sideWeight="0.5" order="2" side_tool="false" content_ui="combo" />
+      <window_info id="Database" active="false" anchor="right" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="4" side_tool="false" content_ui="tabs" />
+      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.3265306" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
       <window_info id="Inspection" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.4" sideWeight="0.5" order="5" side_tool="false" content_ui="tabs" />
       <window_info id="Find" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="1" side_tool="false" content_ui="tabs" />
     </layout>
@@ -474,11 +473,50 @@
     <watches-manager />
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/src/Seccion6/TreeMap.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="323">
+          <caret line="19" column="28" lean-forward="false" selection-start-line="19" selection-start-column="28" selection-end-line="19" selection-end-column="28" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/Seccion7/Funciones.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="34">
+          <caret line="2" column="0" lean-forward="false" selection-start-line="2" selection-start-column="0" selection-end-line="6" selection-end-column="0" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/Seccion7/Overloading.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="34">
+          <caret line="2" column="25" lean-forward="false" selection-start-line="2" selection-start-column="25" selection-end-line="2" selection-end-column="25" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/Seccion7/InlineFunctions.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="102">
+          <caret line="6" column="15" lean-forward="true" selection-start-line="6" selection-start-column="15" selection-end-line="6" selection-end-column="15" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/Seccion7/Poliformismo.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="391">
+          <caret line="23" column="19" lean-forward="true" selection-start-line="23" selection-start-column="19" selection-end-line="23" selection-end-column="19" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion5/DoWhile.kt">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="135">
           <caret line="9" column="6" lean-forward="false" selection-start-line="9" selection-start-column="6" selection-end-line="9" selection-end-column="6" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -486,7 +524,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="180">
           <caret line="12" column="57" lean-forward="false" selection-start-line="12" selection-start-column="57" selection-end-line="12" selection-end-column="57" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -494,7 +531,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="450">
           <caret line="30" column="24" lean-forward="false" selection-start-line="30" selection-start-column="24" selection-end-line="30" selection-end-column="24" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -542,7 +578,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="135">
           <caret line="9" column="32" lean-forward="false" selection-start-line="9" selection-start-column="32" selection-end-line="9" selection-end-column="32" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -705,7 +740,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="0">
           <caret line="9" column="6" lean-forward="false" selection-start-line="9" selection-start-column="6" selection-end-line="9" selection-end-column="6" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -713,7 +747,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="0">
           <caret line="9" column="32" lean-forward="false" selection-start-line="9" selection-start-column="32" selection-end-line="9" selection-end-column="32" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -721,7 +754,6 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="0">
           <caret line="12" column="57" lean-forward="false" selection-start-line="12" selection-start-column="57" selection-end-line="12" selection-end-column="57" />
-          <folding />
         </state>
       </provider>
     </entry>
@@ -729,13 +761,12 @@
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="0">
           <caret line="30" column="24" lean-forward="false" selection-start-line="30" selection-start-column="24" selection-end-line="30" selection-end-column="24" />
-          <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/Array.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="0">
+        <state relative-caret-position="391">
           <caret line="23" column="0" lean-forward="false" selection-start-line="23" selection-start-column="0" selection-end-line="23" selection-end-column="0" />
           <folding />
         </state>
@@ -743,7 +774,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/ArrayList.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-7">
+        <state relative-caret-position="578">
           <caret line="34" column="18" lean-forward="false" selection-start-line="34" selection-start-column="18" selection-end-line="34" selection-end-column="18" />
           <folding />
         </state>
@@ -751,7 +782,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/MutableInmutable.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-7">
+        <state relative-caret-position="357">
           <caret line="21" column="36" lean-forward="false" selection-start-line="21" selection-start-column="36" selection-end-line="21" selection-end-column="36" />
           <folding />
         </state>
@@ -759,7 +790,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/HashMap.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-7">
+        <state relative-caret-position="187">
           <caret line="11" column="11" lean-forward="false" selection-start-line="11" selection-start-column="11" selection-end-line="11" selection-end-column="11" />
           <folding />
         </state>
@@ -767,7 +798,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/Colecciones.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-7">
+        <state relative-caret-position="238">
           <caret line="14" column="4" lean-forward="false" selection-start-line="14" selection-start-column="4" selection-end-line="18" selection-end-column="5" />
           <folding />
         </state>
@@ -775,7 +806,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion6/TreeMap.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="285">
+        <state relative-caret-position="323">
           <caret line="19" column="28" lean-forward="false" selection-start-line="19" selection-start-column="28" selection-end-line="19" selection-end-column="28" />
           <folding />
         </state>
@@ -783,7 +814,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion7/Funciones.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="30">
+        <state relative-caret-position="34">
           <caret line="2" column="0" lean-forward="false" selection-start-line="2" selection-start-column="0" selection-end-line="6" selection-end-column="0" />
           <folding />
         </state>
@@ -791,7 +822,7 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion7/Overloading.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="30">
+        <state relative-caret-position="34">
           <caret line="2" column="25" lean-forward="false" selection-start-line="2" selection-start-column="25" selection-end-line="2" selection-end-column="25" />
           <folding />
         </state>
@@ -799,16 +830,24 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion7/InlineFunctions.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="71">
-          <caret line="6" column="15" lean-forward="true" selection-start-line="6" selection-start-column="15" selection-end-line="6" selection-end-column="15" />
+        <state relative-caret-position="102">
+          <caret line="6" column="15" lean-forward="false" selection-start-line="6" selection-start-column="15" selection-end-line="6" selection-end-column="15" />
           <folding />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/Seccion7/Poliformismo.kt">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="128">
-          <caret line="23" column="19" lean-forward="true" selection-start-line="23" selection-start-column="19" selection-end-line="23" selection-end-column="19" />
+        <state relative-caret-position="135">
+          <caret line="23" column="19" lean-forward="false" selection-start-line="23" selection-start-column="19" selection-end-line="23" selection-end-column="19" />
+          <folding />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/Seccion8/Constructor.kt">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-17">
+          <caret line="0" column="0" lean-forward="false" selection-start-line="0" selection-start-column="0" selection-end-line="0" selection-end-column="0" />
           <folding />
         </state>
       </provider>
diff --git a/src/Seccion8/Constructor.kt b/src/Seccion8/Constructor.kt
new file mode 100644
index 0000000..2da5eb8
--- /dev/null
+++ b/src/Seccion8/Constructor.kt
@@ -0,0 +1,38 @@
+package Seccion8
+
+class Person(){
+    var nombre : String? = null
+    var edad: Int? = null
+    var altura: Double? = null
+    var peso: Double? = null
+    var colorOjos: String? = null
+    var genero: String? = null
+
+    constructor(nombre: String, edad: Int, altura: Double, peso: Double, colorOjos: String, genero: String): this() {
+
+        this.nombre = nombre
+        this.edad = edad
+        this.altura = altura
+        this.peso = peso
+        this.colorOjos = colorOjos
+        this.genero = genero
+    }
+
+    fun GetNombre(): String? {
+        return this.nombre
+    }
+
+    fun GetGenero(): String? {
+        return this.genero
+    }
+}
+
+fun main(args: Array<String>){
+    var person = Person("Jose", 12,1.50,78.6, "Cafes","Masculino")
+    println("El nombre es: " + person.GetNombre())
+    println("El genero es: " + person.GetGenero())
+
+    var person2 = Person("Luis", 16,1.60,79.6, "Cafes","Masculino")
+    println("El nombre es: " + person2.GetNombre())
+    println("El genero es: " + person2.GetGenero())
+}
\ No newline at end of file
diff --git a/src/Seccion8/Enumerados.kt b/src/Seccion8/Enumerados.kt
new file mode 100644
index 0000000..ce6ce08
--- /dev/null
+++ b/src/Seccion8/Enumerados.kt
@@ -0,0 +1,30 @@
+package Seccion8
+
+//La posicion inicia desde 0 como en un Array
+enum class Meses {
+    ENE, FEB, MAR, ABR, MAY, JUN, JUL, AGO, SEP, OCT, NOV, DIC
+}
+
+fun main(args: Array<String>){
+    var sextoMes = Meses.JUN
+    var primerMes = Meses.ENE
+
+    //Nombre del valor en el enum
+    println("Nombre: " + sextoMes.name)
+    //Posicion de la constante
+    println("Posicion: " + sextoMes.ordinal)
+
+    //Nombre del valor en el enum
+    println("Nombre: " + primerMes.name)
+    //Posicion de la constante
+    println("Posicion: " + primerMes.ordinal)
+
+    //Compara segun en el orden en el cual estan separadas dichas constantes
+    println("Comprar: " + sextoMes.compareTo(primerMes))
+    println("Comprar: " + primerMes.compareTo(sextoMes))
+
+    //Enlista todos los valores del enumerador
+    for(item in Meses.values()){
+        println(item)
+    }
+}
\ No newline at end of file
diff --git a/src/Seccion8/Extension.kt b/src/Seccion8/Extension.kt
new file mode 100644
index 0000000..e93b235
--- /dev/null
+++ b/src/Seccion8/Extension.kt
@@ -0,0 +1,21 @@
+package Seccion8
+
+//Uso de extensiones para la clase ArrayList
+fun ArrayList<String>.intercambiar(indice1: Int, indice2: Int){
+    var temporal = this.get(indice1)
+    this.set(indice1, this.get(indice2))
+    this.set(indice2, temporal)
+}
+
+fun main(args: Array<String>){
+
+    var arrayList = ArrayList<String>()
+    arrayList.add("Jose")
+    arrayList.add("Alo")
+    arrayList.add("Hola")
+
+    println(arrayList)
+
+    arrayList.intercambiar(0,1)
+    println(arrayList)
+}
\ No newline at end of file
diff --git a/src/Seccion8/Herencia.kt b/src/Seccion8/Herencia.kt
new file mode 100644
index 0000000..0ac2273
--- /dev/null
+++ b/src/Seccion8/Herencia.kt
@@ -0,0 +1,43 @@
+package Seccion8
+
+//Con esto se puede acceder a la extension a otras clases
+open class Humano(){
+    //Todas las variables en Kotlin son publicas
+    var palabra : String? = null
+    //No se puede hacer una instancia de la variable
+    //protected var palabra : String? = null
+    //Solo quien este dentro de la clase principal puede ver esta variable
+    //private var palabra : String? = null
+
+    open fun saludo(){
+        println("Hola")
+    }
+}
+
+//Solo se puede heredar de una clase una sola vez
+class Perro() : Humano(){
+    fun ladrido(){
+        println("Ladrando")
+    }
+
+    fun getPalabra(){
+        //Manda a llamar a la superclase
+        super.palabra
+    }
+}
+
+class Gato() {
+    fun maullido(){
+        println("Miau")
+    }
+}
+
+fun main(args: Array<String>) {
+    var persona = Humano()
+    var juanito = persona.saludo()
+
+    var perrito = Perro()
+    var coco = perrito.saludo()
+
+    println(persona.palabra)
+}
\ No newline at end of file
diff --git a/src/Seccion8/Import.kt b/src/Seccion8/Import.kt
new file mode 100644
index 0000000..f47fef1
--- /dev/null
+++ b/src/Seccion8/Import.kt
@@ -0,0 +1,6 @@
+package Seccion8
+
+fun main(args: Array<String>){
+    var person = Persona("Jose", 12,1.50,78.6, "Cafes","Masculino")
+    println("El nombre es: " + person.GetNombre())
+}
\ No newline at end of file
diff --git a/src/Seccion8/InnerYAnidado.kt b/src/Seccion8/InnerYAnidado.kt
new file mode 100644
index 0000000..c4661e8
--- /dev/null
+++ b/src/Seccion8/InnerYAnidado.kt
@@ -0,0 +1,22 @@
+package Seccion8
+
+//Clase anidada
+class Externa{
+    private val nombre: String? = null
+
+    //Poniendo el modificador Inner se pueden acceder a variables
+    //externas de la clase hijo anidada a la clase padre
+    inner class Anidada{
+        fun mostrar(){
+            println("Soy una clase anidada")
+            println(nombre)
+        }
+    }
+}
+
+fun main(args: Array<String>){
+    var externa = Externa()
+    //Antes: var anidada = Externa.Anidada() //Al momemtno de poner el modificador "inner" se agrega parentesis a la clase padre.
+    var anidada = Externa().Anidada()
+    anidada.mostrar()
+}
\ No newline at end of file
diff --git a/src/Seccion8/Interfaz.kt b/src/Seccion8/Interfaz.kt
new file mode 100644
index 0000000..8aef17b
--- /dev/null
+++ b/src/Seccion8/Interfaz.kt
@@ -0,0 +1,30 @@
+package Seccion8
+
+interface Operacion {
+    //Abstract refiere a que la funcion no tiene cuerpo
+    //No se pueden crear objetos a partir de una clasa abstracta
+    fun sum(num1: Int, num2: Int): Int
+    fun div(num1: Int, num2: Int)
+    //Funcion implementada dentro de la interfaz
+    fun multiplicar(num1: Int, num2: Int): Int{
+        return num1 * num2
+    }
+}
+
+class Oper(): Operacion {
+    override fun div(num1: Int, num2: Int) {
+        println("La division es: " + num1/num2)
+    }
+
+    override fun sum(num1: Int, num2: Int): Int {
+        return (num1 + num2) * 3
+    }
+
+}
+
+fun main(args: Array<String>){
+    var operacion= Oper()
+    var miOperacion = operacion.multiplicar(1,2)
+
+    println(miOperacion)
+}
\ No newline at end of file
diff --git a/src/Seccion8/Numeros.kt b/src/Seccion8/Numeros.kt
new file mode 100644
index 0000000..b541c7e
--- /dev/null
+++ b/src/Seccion8/Numeros.kt
@@ -0,0 +1,22 @@
+package Seccion8
+
+//Clase generica representada con la letra T
+class Numeros<T>(numero:T){
+    init{
+        println(numero)
+    }
+}
+
+fun <T> imprimir(texto: T){
+    println(texto)
+}
+
+fun main(args: Array<String>){
+    var numero1 = Numeros<Int>(23)
+    var numero2 = Numeros<Float>(23.4223f)
+    var numero3 = Numeros<Double>(23.1321312312)
+
+    imprimir<Int>(12)
+    imprimir<Double>(12.123)
+    imprimir<Float>(12.123213123f)
+}
\ No newline at end of file
diff --git a/src/Seccion8/Overriding.kt b/src/Seccion8/Overriding.kt
new file mode 100644
index 0000000..378fb4d
--- /dev/null
+++ b/src/Seccion8/Overriding.kt
@@ -0,0 +1,31 @@
+package Seccion8
+
+open class Human(){
+    var palabra : String? = null
+
+    //Para poder modificarla se pone el modificador open
+    open fun saludo(){
+        println("Hola")
+    }
+}
+
+class Perr() : Humano(){
+
+    //Sobrescribe las funciones de saludo de la superclase "Human"
+     override fun saludo(){
+        println("Soy un perro")
+    }
+
+    fun ladrido(){
+        println("Ladrando")
+    }
+}
+
+fun main(args: Array<String>) {
+    var persona = Human()
+    var juanito = persona.saludo()
+
+    var perrito = Perr()
+    var coco = perrito.saludo()
+
+}
\ No newline at end of file
diff --git a/src/Seccion8/SimpleClass.kt b/src/Seccion8/SimpleClass.kt
new file mode 100644
index 0000000..aa7e750
--- /dev/null
+++ b/src/Seccion8/SimpleClass.kt
@@ -0,0 +1,28 @@
+package Seccion8
+
+class Persona(nombre: String, edad: Int, altura: Double, peso: Double, colorOjos: String, genero: String){
+    var nombre : String? = null
+    var edad: Int? = null
+    var altura: Double? = null
+    var peso: Double? = null
+    var colorOjos: String? = null
+    var genero: String? = null
+
+    init{
+        this.nombre = nombre
+        this.edad = edad
+        this.altura = altura
+        this.peso = peso
+        this.colorOjos = colorOjos
+        this.genero = genero
+    }
+
+    fun GetNombre(): String? {
+        return this.nombre
+    }
+}
+
+fun main(args: Array<String>){
+    var person = Persona("Jose", 12,1.50,78.6, "Cafes","Masculino")
+    println("El nombre es: " + person.GetNombre())
+}
\ No newline at end of file