What is Guice framework?

Google Guice (pronounced “juice”) is an open-source software framework for the Java platform released by Google under the Apache License. It provides support for dependency injection using annotations to configure Java objects.

How does Google Guice work?

Google’s Guice is a Java-based dependency injection framework, which means approximately nothing to people who aren’t familiar with it. Google’s Guice is a way to build a graph of dependencies so you can instantiate complex objects made of simpler parts.

What is a dependency injection framework?

Dependency injection is a programming technique that makes a class independent of its dependencies. It achieves that by decoupling the usage of an object from its creation. This helps you to follow SOLID’s dependency inversion and single responsibility principles.

Can Guice and Spring be used together?

The in house framework uses Guice for dependency injection. The standalone app that needs to be migrated to this framework uses Spring, Spring-JMS and Spring Batch. Also, the standlone app needs to be converted to a web app and deployed in an app/web server.

What is injector in Guice?

Interface Injector. public interface Injector. Builds the graphs of objects that make up your application. The injector tracks the dependencies for each type and uses bindings to inject them. This is the core of Guice, although you rarely interact with it directly.

Does Guice use reflection?

Guice uses reflection quite heavily. Reflection on the desktop/server JVM is very efficient, and even very large Guice applications don’t have performance problems related to Guice. Reflection on Android is much less efficient, particularly on older Gingerbread and Froyo devices.

What does bind do in Guice?

3.2. Binding is to Guice as wiring is to Spring. With bindings, you define how Guice is going to inject dependencies into a class. This module implementation specifies that an instance of DefaultCommunicatorImpl is to be injected wherever a Communicator variable is found.