.. This file is part of the OpenDSA eTextbook project. See
.. http://opendsa.org for more details.
.. Copyright (c) 2012-2020 by the OpenDSA Project Contributors, and
.. distributed under an MIT open source license.

.. avmetadata::
   :author: Molly Domino


Polymorphism
============

Objectives
----------

* Create and use objects in java
* Review Java Interfaces and Abstract Classes
* Review Inheritance and Composition
* Review Overloading and Overriding
* Review Reference Variables
* Trace and program using inheritance
* Trace and implement equals and toString methods
* Trace coding examples of polymorphism
* Design java classes using polymorphism
* Apply Typecasting



Interactive: Introduction to Object Oriented Programming [9:26]
---------------------------------------------------------------

.. raw:: html
    
    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_td3bp4s0' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>
    <br>
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPObjects.pdf"  target="_blank">
    <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
    Video Slides Java OOP Objects.pdf</img>
    </a>



Checkpoint 1
------------

.. avembed:: Exercises/SWDesignAndDataStructs/OOP1Checkpoint1Summ.html ka
   :long_name: Checkpoint 1



Interactive: Java UML Diagrams [6:15]
-------------------------------------

.. raw:: html

    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_phzs60ad' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>
    <br>
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStruct/course-notes/JavaOOPUML.pdf" target="_blank">
    <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
    Video Slides 7.3.2.1-JavaOOPUML.pdf</img>
    </a>
    <br>
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStruct/course-notes/OOPUMLDiagramKey.pdf" target="_blank">
    <img src="../html/_static/Images/uml.png" width="32" height="32">
    UML Diagram from the example in the video</img>
    </a>


Programming Practice: Object Oriented Programming
-------------------------------------------------

.. extrtoolembed:: 'Programming Practice: Object Oriented Programming'
   :workout_id: 1906


Interactive: Java Inheritance: this, super [11:15]
--------------------------------------------------

.. admonition:: Follow Along, Practice and Explore

    Download to run and explore the java file (see below) from the video on your own in eclipse. You may download the standalone \*.java file for this example. To run the standalone \*.java file you will need to 
    1) create a new Eclipse project, then 
    2) create a package within the project called “example” (the package named at the top of the class MUST match the package the file is placed in within the Eclipse project), and finally 
    3) download and import the standalone \*.java file(s) to the created package.

   .. raw:: html
   
        <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPInheritenceSuperThis.pdf"  target="_blank">
        <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
        Video Slides Java OOP Super This.pdf</img>
        </a>
        <br>
        <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/examples/exJavaOOP.zip"  target="_blank">
        <img src="../html/_static/Images/icons8-java60.png" width="32" height="32">
        CS2 Java OOP Example Eclipse Project</img>
        </a>
        


.. raw:: html
    
    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_25fplq8v' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>

Checkpoint 2
------------

.. avembed:: Exercises/SWDesignAndDataStructs/OOP1Checkpoint2Summ.html ka
   :long_name: Checkpoint 2



Interactive: Java Inheritance: equals(), toString() [14:33] 
-----------------------------------------------------------

.. raw:: html

    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_ml9sbz2y' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>
    <br>
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPInheritenceEqualsToString.pdf"  target="_blank">
    <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
    Video Slides Java OOP Equals ToString .pdf</img>
    </a>


Java OOP Checkpoint 3
---------------------
.. avembed:: Exercises/SWDesignAndDataStructs/OOP1Checkpoint3Summ.html ka
   :long_name: Checkpoint 3


Interactive: Polymorphism Measurable Interface [7:23]
-----------------------------------------------------

.. admonition:: Try It Yourself

    Download to run and explore the java file (see below) from the video on your own in eclipse. You may download the standalone \*.java file for this example. To run the standalone \*.java file you will need to 
    1) create a new Eclipse project, then 
    2) create a package within the project called “example” (the package named at the top of the class MUST match the package the file is placed in within the Eclipse project), and finally 
    3) download and import the standalone \*.java file(s) to the created package.
    
    .. raw:: html
    
        <!-- TODO: Code link? ok there is an exMeasurable.zip, need that listed here?? not sure how syncs with admonition-->
        <br>
        <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPPolyMeasurable.pdf" target="_blank">
        <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
        Video Slides JavaOOPPolyMeasurable.pdf</img>
        </a>

.. raw:: html

    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_ywzatt7g' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>


Checkpoint 4
------------

.. avembed:: Exercises/SWDesignAndDataStructs/OOP2Checkpoint4Summ.html ka
   :long_name: Checkpoint 4


Programming Practice: Polymorphism 1
------------------------------------

.. extrtoolembed:: 'Programming Practice: Polymorphism 1'
   :workout_id: 1907

Interactive: Polymorphism Computer Superclass [12:09]
-----------------------------------------------------

.. raw:: html

    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=1_pkxo2beb' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>
    
    <br>
    
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPPolyComputer.pdf" target="_blank">
    <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
    Video Slides JavaOOPPolyComputer.pdf</img>
    </a>

Checkpoint 5
------------

.. avembed:: Exercises/SWDesignAndDataStructs/OOP2Checkpoint5Summ.html ka
   :long_name: Checkpoint 5





Interactive: Polymorphism Integer Example [7:40]
------------------------------------------------

.. raw:: html
    
    <center>
    <iframe type="text/javascript" src='https://cdnapisec.kaltura.com/p/2375811/embedPlaykitJs/uiconf_id/52883092?iframeembed=true&entry_id=0_33oovpxg' style="width: 960px; height: 395px" allowfullscreen webkitallowfullscreen mozAllowFullScreen allow="autoplay *; fullscreen *; encrypted-media *" frameborder="0"></iframe> 
    </center>
    <br>
    
    <a href="https://courses.cs.vt.edu/cs2114/SWDesignAndDataStructs/course-notes/JavaOOPPolyInteger.pdf" target="_blank">
    <img src="../html/_static/Images/projector-screen.png" width="32" height="32">
    Video Slides JavaOOPPolyInteger.pdf</img>
    </a>
    

Checkpoint 6
------------

.. avembed:: Exercises/SWDesignAndDataStructs/OOP2Checkpoint6Summ.html ka
   :long_name: Checkpoint 6


Programming Practice: Polymorphism 2
------------------------------------

.. extrtoolembed:: 'Programming Practice: Polymorphism 2'
   :workout_id: 1908