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====== Can I use DCI in Java? ======
At runtime (program execution), DCI is about attaching and detaching RoleMethods to objects, while [[Why isn't it DCI if you use a wrapper object to represent the Role?|preserving object identity]]. This makes it tricky to implement DCI in any statically typed language, however many of those languages have features to make it look like a type has other member methods than what's defined in its class or structure:

  * C# has [[http://en.wikipedia.org/wiki/Extension_method|extension methods]]
  * C++ has [[http://en.wikipedia.org/wiki/Template_(C%2B%2B)|templates]]
  * Haxe has a powerful [[http://en.wikipedia.org/wiki/Type_inference|type inference]]

Unfortunately Java has nothing similar to those features, making a true DCI implementation impossible in the current version of the language. All is not lost however, both Scala and Qi4j generates Java object code and has a fully working DCI implementation. Check the [[Existing DCI Implementations]] page for links.

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