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copied!<p>It depends on your application. As a baseline, its good design to use static variables to hold data that your program will need, instead of hardcoding strings and integers all over the place; This means any changes (i.e. application wide font color) in the future will only require a single change, then a compile cycle and your good to go.</p> <p>However, if these settings are user configurable, then they cannot be hard coded, but instead need to be read from an external source, and where you do it, is a matter of design, complexity and security.</p> <p>Plain text files are good for a small application, where security is lax and things are plain text. The SublimeText editor and notepad++ editor do this for their theme settings and it works well. (I believe it was plain text, perhaps they have moved to XML now)</p> <p>A better option is XML, as it is structured, easier to read/parse/write. Lots of projects use this as an option. One thing to look out for is corrupt files, while reading/writing to them, if the user closes the program or the JVM exits randomly for whatever reason. You might want to look at things like buffers. And also deal with FileNotFoundExceptions, if the text/xml file is missing.</p> <p>Another option is a database file of some sort, its a bit more secure, you can add application level encryption and you have a multitude of options. Large programs that already use a DB backend, like MySQL, already have a database to hand, so create a new table and store the config there. Small applications can look at SQLite as an option.</p>

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