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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-7">
<title>Computer Science 101: Data Abstraction</title>
<meta name="description" content="Teaching Slides for Computer Science 101">
<meta name="author" content="Gregory M. Kapfhammer">
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<div class="reveal">
<div class="slides">
<section data-background-transition="none" data-background="https://images.unsplash.com/photo-1452860606245-08befc0ff44b" style="background: rgba(29,31,33,0.9)">
<h1>Computer Science 101</h1>
<h2>Data Abstraction</h2>
<p>Gregory M. Kapfhammer</p>
</section>
<section>
<h1>Color Scheme</h1>
<p class="fragment"><b class="orange">Key Concept</b></p>
<p class="fragment"><b class="purple">Corresponding Diagram</b></p>
<p class="fragment"><b class="green">In-Class Discussion</b></p>
<p class="fragment"><b class="red">In-Class Activity</b></p>
<p class="fragment"><b class="blue">Details in the Textbook</b></p>
</section>
<section>
<h1>Object-Oriented Design</h1>
<p class="fragment">Goals: robustness, adaptability, reusability</p>
<p class="fragment">Principles: abstract, encapsulation, modularity</p>
<p class="fragment">Terms: polymorphism, inheritance, encapsulation</p>
<p class="fragment"><b class="green">Any questions about these key points?</b></p>
</section>
<section>
<h1><b class="orange">Language constructs support these principles</b></h1>
</section>
<section>
<h1><b class="blue">See Figure 2.3 for a complex inheritance hierarchy</b></h1>
</section>
<section>
<h1><b class="blue">See Figure 2.4 for a simple inheritance hierarchy</b></h1>
</section>
<section>
<h1><b class="blue">See Figure 2.5 for another inheritance hierarchy</b></h1>
</section>
<section>
<h1><b class="green">Can you propose an inheritance hierarchy?</b></h1>
</section>
<section>
<h1><b class="green">What is a numerical progression?</b></h1>
</section>
<section>
<h1><b class="blue">See Code Fragment 2.7</b></h1>
</section>
<section>
<h1><b class="blue">Interfaces and abstract classes</b></h1>
</section>
<section>
<h1><b class="orange">Establish a contract for an implementation</b></h1>
</section>
<section>
<h1><b class="orange">Defer implementation to another class</b></h1>
</section>
<section>
<h1 id="what_is_an_array?"><b class="orange">Exception Handling</b></h1>
</section>
<section>
<h1 id="motivation_for_using_arrays"><b class="green">What could go wrong?</b></h1>
</section>
<section>
<h1 id="file_system_problems"><b class="orange">File system problems</b></h1>
</section>
<section>
<h1 id="network_communication_concerns"><b class="orange">Network problems</b></h1>
</section>
<section>
<h1><b class="red">Write a Java program that divides a variable by zero!</b></h1>
</section>
<section>
<h1>How to Handle?</h1>
<p class="fragment">Do not handle the exception</p>
<p class="fragment">Handle the exception where it occurs</p>
<p class="fragment">Handle the exception somewhere else in the program</p>
<p class="fragment"><b class="green">What are the trade-offs of these solutions?</b></p>
</section>
<section>
<h1 id="uncaught_exceptions"><b class="orange">Uncaught exceptions</b></h1>
</section>
<section>
<h1 id="caught_exceptions"><b class="orange">Caught Exceptions</b></h1>
</section>
<section>
<h1><b class="green">How are exception types similar and different?</b></h1>
</section>
<section>
<h1><b class="orange">Try-Catch Statements</b></h1>
</section>
<section>
<h1><b class="blue">Casting and Generics</b></h1>
</section>
<section>
<h1><b class="green">Why are generics important?</b></h1>
</section>
<section>
<h1><b class="orange">Let's investigate a method signature!</b></h1>
</section>
<section>
<h2><b class="orange"><code>public static <T> void reverse(T[] data)</code></b></h2>
</section>
<section>
<h1><b class="blue">Nested Classes</b></h1>
</section>
<section>
<h1><b class="green">Why are nested classes important?</b></h1>
</section>
<section>
<h1><b class="orange">Intuitively, a class within a class</b></h1>
</section>
<section>
<h1><b class="green">Any questions about object-oriented design?</b></h1>
</section>
<section>
<h1><b class="orange">We'll see examples throughout the semester!</b></h1>
</section>
</div>
</div>
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