incidentally, I seem to remember that the enclojure netbeans plugin does all this for you, and even outputs the exact command you need to run to execute.
a default project starts with such a -main. That said, it's probably not a good way to really understand what's going on ... if that's a goal. On Wed, Apr 29, 2009 at 2:36 PM, Santanu <thisissant...@gmail.com> wrote: > > Thanks everyone for your suggestions. > I somehow managed to compile my first clojure program, generating a > class file that I could run using java. > I started with the overview provided by Stuart Sierra, and read the > article pointed by Raphaël. Didn't work at first, but after some trial > and error, it worked somehow. The main problem is that I don't know > any Java yet (I just started reading Core Java vol.1 as suggested by > this group a few days ago). > > Anyways, I am mentioning the process I used. Please suggest any better > (shorter/simpler) ways if you feel this is not the right way to do it. > > 1. I created a simple test2.clj file in my $HOME: > ----------------------- > (ns test2 > (:gen-class)) > > (defn -main [& args] > (println "Hello, world of Clojure!")) > ------------------------ > > 2. I started a clojure REPL, from a terminal: > ------------------------ > sant...@lenny:~$ java -cp /home/santanu/:/opt/clojure/clojure.jar > clojure.lang.Repl > ------------------------ > > 3. Inside the REPL, I compiled my program using: > ------------------------ > (binding [*compile-path* "/home/santanu"] > (do > (load-file "test2.clj") > (compile 'test2))) > ------------------------ > > 4. Got out of the REPL, and ran the program using: > ------------------------ > sant...@lenny:~$ java -cp ./:/opt/clojure/clojure.jar test2 > Hello, world of Clojure! > ------------------------ > > One thing I noticed was that the above run takes an aweful amount of > time to run, much much more than a similar compiled java program: > > ------------------------- > sant...@lenny:~$ time java -cp /home/santanu/:/opt/clojure/clojure.jar > test2 > Hello, world of Clojure! > > real 0m1.093s > user 0m0.952s > sys 0m0.064s > > sant...@lenny:~$ time java Test > Hello, World of Java! > > real 0m0.105s > user 0m0.040s > sys 0m0.008s > ------------------------- > I think I am definitely missing something here. > > Regards, > Santanu Chatterjee > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
