Question

I am writing a library which uses some configurations. These configuration will not change frequently but will possible change in the future. Therefore I don’t want to hard code them in the code.

What is the best way of doing this for a Java library? One possible solution is to inject it and hard code them in a DI configuration file I assume. But this requires code change as well.

What is the most typical way of doing this?

Many thanks

Answer 1

You can do this:

• Add the default configuration as an embedded resource file to the library jar
• Then the user can override the file adding a resource with the same path to the classpath

As file format you can use the Java Properties File.

And you can load it in this way

Properties props = new Properties();
props.load(YourClass.class.getResourceAsStream("name-of-your-prop-file.properties"));