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Overview of bindings in Guice
The injector's job is to assemble graphs of objects. You request an instance of a given type, and it figures out what to build, resolves dependencies, and wires everything together. To specify how dependencies are resolved, configure your injector with bindings.
To create bindings, extend
AbstractModule and override its
configure method. In the method body, call
bind() to specify each binding. These methods are type checked so the compiler can report errors if you use the wrong types. Once you've created your modules, pass them as arguments to
Guice.createInjector() to build an injector.
In addition to the bindings you specify the injector includes built-in bindings. When a dependency is requested but not found it attempts to create a just-in-time binding. The injector also includes bindings for the providers of its other bindings.