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Seo Master present to you: Posted by Dion Almaer, Google Developer Programs

Google has been using a blazingly fast, innovative, Java 5-based dependency injection framework in mission critical applications for quite some time.

The project is lead by Bob Lee, and we are pleased to say that we have released it to the community as open source software.

Guice wholly embraces annotations and generics, thereby enabling you to wire together and test objects with less effort than ever before. Annotations finally free you from error-prone, refactoring-adverse string identifiers.

Guice injects constructors, fields and methods (any methods with any number of arguments, not just setters). Guice includes advanced features such as custom scopes, circular dependencies, static member injection, Spring integration, and AOP Alliance method interception, most of which you can ignore until you need it.

Guice already has a community around it, and already powers Struts 2's plugin architecture.

We asked Bob Lee a few questions about the project:

Why was Guice created?

We created Guice hoping to write less code and break up a multi-million line app. We looked at existing solutions, but we saw a lot of doors opened by the new Java 5 features. When I started from scratch I followed a use case driven approach and built a real application. As I wrote I was constantly asking myself "how do I really want to be writing this?".

I value pragmatism and followed Josh Bloch's API design advice, especially, "when in doubt, leave it out."

Finally, we strove most of all for maintainability. Can a new programmer sit down at a million line code base and maintain it? We think type safety is a huge factor here.

Who should use Guice?

Anyone writing Java code. We see Guice as a lighter weight alternative to the factory pattern.

More information:

• Guice project on Google Code
• Guice users guide
• Javadoc Guide documentation
• Download Guide
• Join the Guice group / mailing list
• How it compares, and can cooperate, with Spring

2013, By: Seo Master

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Seo Master present to you: 2013, By: Seo Master