- Google Guice Tutorial
- Guice - Home
- Guice - Overview
- Guice - Environment Setup
- Guice - First Application
- Bindings Examples
- Guice - Linked binding
- Guice - Binding Annotations
- Guice - @Named binding
- Guice - Constant Bindings
- Guice - @Provides Annotation
- Guice - Provider Class
- Guice - Constructor Bindings
- Guice - Inbuilt Bindings
- Guice - Just-in-time Bindings
- Injection Examples
- Guice - Constructor Injection
- Guice - Method Injection
- Guice - Field Injection
- Guice - Optional Injection
- Guice - On-demand Injection
- Miscellaneous Examples
- Guice - Scopes
- Guice - AOP
- Guice Useful Resources
- Guice - Quick Guide
- Guice - Useful Resources
- Guice - Discussion
Google Guice - Just-in-time Bindings
As bindings are defined in Binding Module, Guice uses them whenever it needs to inject dependencies. In case bindings are not present, it can attempt to create just-in-time bindings. Bindings present in the binding module are called Explicit bindings and are of higher precedence whereas just-in-time bindings are called Implicit bindings. Note that if both type of bindings are present, explicit bindings are considered for mapping.
The examples for three types of Just-in-time bindings are given below −
| Sr.No. | Binding Type & Description |
|---|---|
| 1 | Injectable Constructors
Non-private, No-argument constructors are eligible for just-in-time bindings. Another way is to annotate a constructor with @Inject annotation. |
| 2 | @ImplementatedBy annotation
@ImplementatedBy annotation tells the guice about the implementation class. No binding is required in Binding Module in such a case. |
| 3 | @ProvidedBy annotation
@ProvidedBy annotation tells the guice about the provider of implementation class. No binding is required in Binding Module in such a case. |