Guice and general application configuration

Question

For a monitoring software written in Java I consider using Google Guice as DI provider. The project needs to load its configuration from an external resource (file or database).

Answer 1

It's straightforward to slurp a property file in a Guice module:

public class MyModule extends AbstractModule {

  @Override
  protected void configure() {
    try {
        Properties properties = new Properties();
        properties.load(new FileReader("my.properties"));
        Names.bindProperties(binder(), properties);
    } catch (IOException ex) {
        //...
    }
  }
} 

Later it's easy to switch from Properties to other config sources.

[Edit]

BTW, you can get the injected properties by annotating it with @Named("myKey").