Hi,
user=> (let [sb (new StringBuilder)] (. sb (length)))
java.lang.IllegalAccessError: tried to access class
java.lang.AbstractStringBuilder from class user.fn__283
at user.fn__283.invoke(Unknown Source)
at clojure.lang.AFn.applyToHelper(AFn.java:171)
at clojure.lang.AFn.applyTo(AFn.java:164)
at clojure.lang.Compiler$InvokeExpr.eval(Compiler.java:2076)
at clojure.lang.Compiler.eval (Compiler.java:2935)