The author was doing a section by section comparison of the two - Look! There's no Haskell needed for the corresponding Java code! He is deliberately showing v

The author was doing a section by section comparison of the two - Look! There's no Haskell needed for the corresponding Java code! He is deliberately showing verbosity in Java with an apple-to-orange strawman comparison. What else is he trying to show? The instance variable in class is an important strawman the author added to Java. He's trying to show the need of "state" in Java, which is not needed in a sensible Java version of qsort, as all data can be passed in parameters. He also made the statement that the instance variable is needed for recursion in Java (!) to "substantiate" (make up) the excuse for using instance variable in Java. And yes, those are called strawman.