このClojureのtutorialが非常に参考になる。本家のドキュメントではないけどたいへん分かりやすい。 Clojure Tutorial For the Non-Lisp Programmer | Moxley Stratton ClojureがJavaのClassライブラリをアクセスする構文を持っている。 対して、NendoはRubyのClassライブラリをアクセスする必要があるので、言語仕様を考える上でClojureの例は大変参考になる。

例えばこれは参考になる。 Clojure provides the ability to interface with Java objects and primitives. Knowing how to do this is essential for non-trival programs.

Let’s start by instantiating a Java java.util.Date object:

   user=> (new java.util.Date)
   Mon May 26 10:25:25 PDT 2008

To pass arguments to the object’s constructor, just include them in the call to new:

   user=> (new StringBuffer "This is the initial value")
   This is the initial value

To call an object’s method use the dot (.) form:

   user=> (. (new java.util.Date) (toString))
   "Mon May 26 11:12:15 PDT 2008"

The dot form uses a dot character (.) as the operator. The second argument is the object whose method will be called. The

third argument is a list containing the method name and the method’s arguments, if any:

   user=> (. (new java.util.HashMap) (containsKey "key"))
   false

Static methods can be called in the same way:

   user=> (. Boolean (valueOf "true"))
   true