Just for laughs: A simple macro that Java-ifies your Clojure.

core.clj

(ns java-clj.core)

(defn java-1 [form]
  (if (list? form)
    (let [tail (map java-1 (rest (rest form)))]
      (if (< 2 (count form))
        `(~(second form) ~(first form) ~@tail)
        `~form))
    form))

(defmacro java [& forms]
  (let [forms (map java-1 forms)]
    `(do ~@forms)))

;; Now you can write in more familiar style
(java ("Java -> Clojure".substring 8)) ;;=> "Clojure"
(java (2 + 3)) ;;=> 5