In Java you have dependency injection, which is fancy name for calling constructors/methods with reflection, depending on some XML file or annotations.
Which makes Java more dynamic at the cost of making it as hard to refactor automatically, as any dynamical language.
The part of code that doesn't use reflection is the part of code, that would be easy to refactor, even if it was written in javascript.
There, I just did dependency injection without a trace of reflection. Additionally, since everything is statically typed in Java, refactoring is still vastly simpler than with a dynamically typed language. The few spots in the code where you might be trying an invalid type cast are just that - a few spots. Such problems don't permeate the entire codebase as they do with a dynamic language. And I'm saying this as a huge fan of Clojure and Groovy, preferring them over Java on the JVM.
Which makes Java more dynamic at the cost of making it as hard to refactor automatically, as any dynamical language.
The part of code that doesn't use reflection is the part of code, that would be easy to refactor, even if it was written in javascript.