So I picked up "Head First: Java" and am trying to learn how to write it. What ive gathered so far is that Leopard has Java already installed on it, ok. Now what program should I write the code in, which compiler should I use? If Java is already installed on my computer, where is it? Ive looked in spotlight and the only viable options I find are Java Webstart, andJava Preferences... neither of which appear to be a compiler. Help!