[Solved] Not getting integer overflow in Clojure?

I am running Clojure 1.3.0 with La Clojure in IntelliJ IDEA while reading The Joy Of Clojure, and on section 4.1.3 (page 64), the authors demonstrate integer overflow with the following code:

(+ Integer/MAX_VALUE Integer/MAX_VALUE)
;=> java.lang.ArithmeticException: integer overflow

However, when I try it out on the REPL, I get instead

user=> (+ Integer/MAX_VALUE Integer/MAX_VALUE)

user=> Integer/MAX_VALUE

What is happening here? Why are my integers being added correctly instead of overflowing?

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