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    <p>I would recommend placing your options into some sort of file (whether it be xml or a .properties) especially if the values can change (such as a database username, etc). I would also say that you can break up these configuration files by component. Just like you break up your code, the components that need database information likely do not need image paths. So you can have a file for database info, image path info, etc. Then have your components load the file that they need. </p> <p>In the java-specific case, you can put these files on your classpath and have your components reference them. I like using .properties files because java has a nice class, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Properties.html" rel="nofollow">Properties</a>, for dealing with them.</p> <p>So here's a tiny example for an image provider that gives you a BufferedImage, given the filename.</p> <p>image.properties</p> <pre><code> icon.path=/path/to/my/icons background.path=/path/to/my/backgrounds </code></pre> <p>Make sure this file is on your classpath. Then here's my provider class</p> <pre><code> public class ImageProvider { private static final String PROP_FILE = "image.properties"; private static final String ICON_PATH = "icon.path"; private Properties properties; public ImageProvider() { properties = new Properties(); properties.load(getClass().getClassLoader().getResourceAsStream(PROP_FILE)); } public BufferedImage getIcon(String icon) { return ImageIO.read(properties.getProperty(ICON_PATH) + icon); } } </code></pre>
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    1. POWhere to keep options values, paths to important files, etc
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    1. USjeff
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    1. COSeems like a good way to do it, I didn't even know about .properties files and the way Java handles them. I'll mark your answer as accepted after other people post their own answer if it's still the best one. Thanks a lot!
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      1. USAdam Smith
    2. COIt might be good to test the existence of the designated path at construction time, and throw `IllegalArgumentException` if no such file exists. Well, in your case, it's hard to tell whether you expect `ICON_PATH` to designate a URL, or a file path. The concatenation with the `icon` argument suggests you meant it to be a file path, so don't you need to call the `File` constructor there? http://docs.oracle.com/javase/7/docs/api/javax/imageio/ImageIO.html#read%28java.io.File%29
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    3. COThanks for the comments. I think you are right about the File constructor. Just trying to make a quick example.
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