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93 lines
3 KiB
HTML
93 lines
3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="author" content="Fredrik Danielsson, http://lostkeys.se">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="robots" content="noindex" />
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<title>Brandon Rozek</title>
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</head>
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<body>
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<aside class="main-nav">
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<nav>
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<ul>
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<li class="menuitem ">
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<a href="index.html%3Findex.html" data-shortcut="">
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Home
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<a href="index.html%3Fcourses.html" data-shortcut="">
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Courses
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<a href="index.html%3Flabaide.html" data-shortcut="">
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Lab Aide
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Presentations
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Research
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Transcript
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<main class="main-content">
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<article class="article">
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<h1>Lecture on Oct 25</h1>
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<h2>2 Dimension Array of Objects</h2>
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<p>You can not only do a two dimensional array of primitive types, but you can also do two dimensional arrays of objects/classes.</p>
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<pre><code class="language-java">animalLocation[][] map;
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map = new animalLocation[5][4];</code></pre>
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<p>Since we are dealing with classes, you cannot use this array right away. The code above creates the space in memory to store the objects. To have the animalLocation objects in the array, you must <code>new</code> each instance of the object.</p>
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<pre><code class="language-java">for (int i = 0; i < map.length; i++) {
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for (int j = 0; j < map[i].length; j++) {
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map[i][j] = new animalLocation();
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}
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}</code></pre>
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</article>
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