Grapht is a light-weight dependency injector. It converts the dependency injection problem into a graph-based problem that can be solved and analyzed without constructing any components until a solution is guaranteed. The solution graph is also exposed to enable flexible extensions such as static analysis, and visualizations.

Grapht also supports specifying dependency bindings based on where in the graph the components must be injected. This allows a programmer to specify that a type Foo must be used in the context of type A, but a Bar should be used in any other context. This can be used to compliment the idea of qualifying injection points using annotations, as specified in JSR 330.