Two years ago, Bob Lee and Kevin Bourrillion open sourced Google Guice 1.0, a lightweight
Java dependency injection framework. Guice takes the pain out of writing and maintaining Java
applications big and small. Guice has gained a great deal of traction both inside and outside
of Google. Almost every Java-based application at Google is also a Guice-based application;
the list includes AdWords, Google Docs, Gmail, and even YouTube. Open source users run Guice
in everything from file-sharing software to ATMs. They've even written twobooks about this
Jolt-award-winning framework.
Today, we're releasing Guice 2. The
minimally-sized API extensions introduced by Guice 2 will have a majorly positive impact on
the size and maintainability of your code. We closely scrutinized each addition, carefully
balancing maintainability and flexibility. Here are a few of my favorite new features:
Provider methods eliminate the boilerplate of
manually-constructed dependencies.
Module overrides allow you to tweak a production module for a
unit test or QA deployment.
