Up to speed with Groovy - Making Java Groovy - page 1

Part 1. Up to speed with Groovy
Welcome to part 1 : “Up to speed with Groovy.” This section is made up of four chapters,
covering topics that are independent of any particular application. In the first chapter I try to
help you make the business and technical case for Groovy. The second chapter is a tutorial
by example in how to use Groovy to solve small but interesting problems. Combined with
appendix B it should give you the Groovy background you need to understand the rest of the
topic.
The third chapter reviews how closely Groovy and Java work together. It covers running
Groovy scripts programmatically from Java, as well as other ways the two languages can be
mixed. The easiest way to integrate the two languages is just to make classes in each, instan-
tiate them, and invoke their methods. This chapter provides examples of doing exactly that.
ThefinalchapterinthispartreviewsidiomaticGroovyfeaturesthatcanbeparticularlyhelp-
ful when working with Java problems. From POGOs to AST transformations to the Groovy
JDK, this chapter shows many ways that Groovy can simplify Java development.