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POjava Properties - to expose or not to expose?
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copied!<p>This might be an age old problem and I am sure everyone has their own ways. Suppose I have some properties defined such as</p> <pre><code>secret.user.id=user secret.password=password website.url=http://stackoverflow.com </code></pre> <p>Suppose I have 100 different classes and places where I need to use these properties. Which one is good (1) I create a Util class that will load all properties and serve them using a key constant Such as : Util is a singleton that loads all properties and keeps up on getInstance() call.</p> <pre><code>Util myUtil = Util.getInstance(); String user = myUtil.getConfigByKey(Constants.SECRET_USER_ID); String password = myUtil.getConfigByKey(Constants.SECRET_PASSWORD); .. //getConfigByKey() - inturns invokes properties.get(..) doSomething(user, password) </code></pre> <p>So wherever I need these properties, I can do steps above.</p> <p>(2) I create a meaningful Class to represent these properties; say, ApplicationConfig and provide getters to get specific properties. So above code may look like:</p> <pre><code>ApplicationConfig config = ApplicationConfig.getInstance(); doSomething(config.getSecretUserId(), config.getPassword()); //ApplicationConfig would have instance variables that are initialized during // getInstance() after loading from properties file. </code></pre> <p>Note: The properties file as such will have only minor changes in the future.</p> <p>My personal choice is (2) - let me hear some comments?</p>

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