Groovy, the Blue Pill: Writing Next Generation Java Code in Groovy
35a823d0-e726-4a0b-86df-510ab7ef3c52
 |
Presentation |
Introductory
Emerging Technologies
Room:
Lab 1
Timeslot:
17.09.08 17:00
Speaker: Scott Davis
This talk focuses on integrating Groovy with your legacy Java codebase in a way that wouldn't raise an eyebrow in the most conservative of organizations.
Summary
We'll look at the dramatic reduction in line of code you can achieve by simply flipping your POJOs to POGOs (Plain Old Groovy Objects). We'll talk about calling Java classes from Groovy, and calling Groovy classes from Java. We'll look at Groovyc, the integrated compiler that manages Groovy/Java dependencies without a hiccup.
There are wild-eyed radicals out there telling you that Java is dead, statically-typed languages are passe, and your skills are hopelessly out-of-date. Those extremists are the same ones who don't bat an eye at throwing out years of experience to learn a new language from scratch, pushing aside a familiar IDE for a new one, and deploying to a whole new set of production servers with little regard to legacy integration.
While this "burn the boats" approach to software development might sound exciting to some folks, it's giving your manager the cold shakes right now. What if I told you that there was a way that you could integrate seamlessly with your legacy Java code, continue to use your trusty IDE and stable production servers, and yet take advantage of many of the exciting new dynamic language features that those fanatics keep prattling on about? You'd probably say, "Groovy!" I would, too...
Not once will I tell you to throw out the old in favor of the new. In each case, I'll show you how to integrate the new with the old. Don't throw out your Ant build scripts; mix in a bit of Groovy to spice 'em up. Don't toss out your existing unit tests. (You are unit testing, aren't you? AREN'T YOU?) If not, Groovy is the perfect excuse to get started with a new language in way that improves the quality of your Java application without actually putting the new code into production. That is, until you get hooked on doing things the Groovy way...
If the Red Pill of Dynamic Languages scares the pants off of you (or your manager), don't worry about it. The Blue Pill still offers plenty of benefits. There is no other language on the JVM that offers you the level of deep Java compatibility such that you could rename your "dot J-A-V-A" files to "dot G-R-O-O-V-Y" and not skip a beat. Of course, they both end up with a "dot C-L-A-S-S" extension at the end of the day, so there's good chance that no one would ever be the wiser anyway. Groovy: funny name, serious software, and Java through-and-through.
Expected audience:
This session is aimed squarely at Java developers. The more experience you have, the better, but even neophytes will appreciate what Groovy offers Java developers.
Required Experience:
Nothing more than standard Java knowledge.
-
Scott DavisScott Davis is an internationally recognized author and speaker. He is passionate about open source solutions and agile development. He has worked on a variety of Java platforms, from J2EE to J2SE to J2ME (sometimes all on the same project).Scott's books include Groovy Recipes: Greasing the Wheels of Java, GIS for Web Developers: Adding Where to Your Web Applications, The Google Maps API, and JBoss At Work.Scott is the Editor in Chief of aboutGroovy.com, a news and information website that tracks the latest developments in Groovy and Grails. He also writes a regular column for IBM DeveloperWorks -- Mastering Grails.Scott is a frequent presenter at national conferences (such as No Fluff, Just Stuff) and local user groups. He was the president of the Denver Java Users Group in 2003 when it was voted one of the top-ten JUGs in North America. After a quick move north, he is currently active in the leadership of the Boulder Java Users Group. Keep up with him at http://www.davisworld.org.