Download Groovy Recipes: Greasing the Wheels of Java by Scott Davis PDF

By Scott Davis

No matter if you are new to Groovy or you are an skilled Groovy programmer, Groovy Recipes, is a must-have reference e-book. Groovy Recipes, is nice at giving a simple clarification on Groovy center suggestions. yet, its genuine energy is in supplying a plethora of examples, that maintain you coming again to this e-book, many times, to profit the straightforward splendor of writing Groovy code. whether you are an skilled Java or Groovy programmer, you will need this publication on your programming device field. I frequently reference Chapters 6,7 and eight, "File Tricks," "Parsing XML" and "Writing XML," respectively. The final chapters of the ebook, which conceal Grails, are okay, if you would like a normal realizing of what Grails is and the way to take advantage of it. besides the fact that, if Grails is your higher curiosity, there are higher books that you will need to have in your shelf to reference (e.g. Groovy and Grails Recipes and The Definitive consultant to Grails).Bottom line, if Groovy is your basic programming language, this is often an exceptional e-book to have on your arsenal.

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Extra resources for Groovy Recipes: Greasing the Wheels of Java

Example text

The Groovy console is meant to attract the more refined GUI crowd—those who have grown accustomed to the niceties of Cut/Copy/Paste, Undo/Redo, and so on. The console is no replacement for a true text editor, but it offers a few more amenities than the shell. For example, if you have an existing Groovy script, you can open it in the console by choosing File > Open. You can also save a shell session by choosing File > Save. You even have a graphical object browser to get a deeper look into fields and methods available on a given class.

However, Groovy shortens this syntax to make it look as if you were calling the key directly. If you wanted a more array-like syntax, family[’dad’] is yet another way to get an element out of a map. class Work on Everything Except Maps? class returns null instead of the class type. Why? Because your Map doesn’t contain an element named class. getClass(). Of course, getClass() works across all classes, so this might be the safest form of the call to make if you want it to work 100% of the time. For more information, see the sidebar on page 73.

Today is Fri Dec 28 15:16:32 MDT 2007 Embedded dollar signs and curly braces inside Strings are a familiar sight to anyone who works with Ant build files or Java Server Pages (JSPs). ". Groovy brings this syntax to the language in the form of GStrings (short for “Groovy strings,” of course). 65 def template = "" " Dear ${name}, This is a friendly notice that ${amount} was deposited in your checking account on ${date}. "" " 6. ArrayList Groovy offers a concise syntax for creating ArrayLists. Put a comma-delimited list of values in square brackets to the right of the equals sign, and you have a List.

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