Download E-books Making Java Groovy PDF

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By Ken Kousen


Making Java Groovy is a realistic instruction manual for builders who are looking to mixture Groovy into their day by day paintings with Java. It begins via introducing the most important transformations among Java and Groovy—and how one can use them in your virtue. Then, it courses you step by step via lifelike improvement demanding situations, from internet functions to net providers to computer purposes, and indicates how Groovy makes them more straightforward to place into construction.

About this Book

You don't want the complete strength of Java when you are writing a construct script, an easy approach software, or a light-weight internet app—but that is the place Groovy shines brightest. This dependent JVM-based dynamic language extends and simplifies Java so that you can be aware of the duty to hand rather than handling minute info and pointless complexity.

Making Java Groov is a pragmatic advisor for builders who are looking to take advantage of Groovy of their paintings with Java. It begins by way of introducing the foremost adjustments among Java and Groovy and the way to exploit them for your virtue. Then, you are going to specialize in the occasions you face each day, like eating and growing RESTful internet providers, operating with databases, and utilizing the Spring framework. you will additionally discover the good Groovy instruments for construct tactics, checking out, and deployment and the right way to write Groovy-based domain-specific languages that simplify Java improvement.

Written for builders conversant in Java. No Groovy event required.

Purchase of the print publication encompasses a unfastened e-book in PDF, Kindle, and ePub codecs from Manning guides.

What's Inside

  • Easier Java
  • Closures, developers, and metaprogramming
  • Gradle for builds, Spock for testing
  • Groovy frameworks like Grails and Griffon

About the Author

Ken Kousen is an autonomous advisor and coach focusing on Spring, Hibernate, Groovy, and Grails.

Table of Contents

    PART 1: on top of things WITH GROOVY
  1. Why upload Groovy to Java?
  2. Groovy via example
  3. Code-level integration
  4. Using Groovy beneficial properties in Java
  6. Build processes
  7. Testing Groovy and Java projects
  8. PART three: GROOVY within the genuine WORLD
  9. The Spring framework
  10. Database access
  11. RESTful internet services
  12. development and checking out net applications

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This instance used a cool map; lists are utilized in many different examples through the publication. Closures are like nameless functionality our bodies with parameters. The acquire strategy transforms a set by means of using a closure to every point and returning the ensuing checklist. The Groovy JDK provides many easy methods to the normal Java API. Groovy parsers and developers simplify operating with many APIs. the subsequent instance demonstrates Groovy’s XML parsing and new release services, database manipulation, usual expressions, groovlets, and extra. 2. three Groovy Baseball determine 2. four indicates an online program I name Groovy Baseball. For a given date in the course of baseball season the web page creates a Google Map that screens the result of all significant Groovy Baseball 27 determine 2. four Groovy Baseball is an online program that exhibits the result of MLB video games on a given date. League Baseball video games on that day, utilizing information markers headquartered at the stadium of the house group. video game effects also are indexed in a small desk. A calendar widget is supplied so the person can pick out an alternate date, which updates the web page through an Ajax name. a number of the performance is equipped by way of JavaScript through the Google Maps API, which creates the map and provides the markers. additionally, the set of online game effects for a given day is bought through an Ajax name utilizing the prototype JavaScript library. I’ll express the code for that later. meanwhile i need to spotlight the Groovy elements of this software. 28 bankruptcy 2 Groovy by way of instance Create stadium POGOs Geocode stadium destinations Create DB and keep information entry Google internet carrier determine 2. five development Groovy Baseball, half 1—geocoding stadium facts and saving in DB the appliance is easy however it has a good variety of relocating components, so I’ll construct it in levels. the 1st job is to gather the geographic details for the person MLB stadiums and put it aside in a database, as illustrated in determine 2. five. during this a part of the method, I’ll disguise ■ ■ ■ simple outdated Groovy gadgets gaining access to a RESTful internet carrier The groovy. sql. Sql category your next step is to entry the web field rankings and parse the ensuing XML documents, illustrated in determine 2. 6. Load stadium information entry XML field rankings on-line Parse XML and extract information Generate online game consequence output determine 2. 6 construction Groovy Baseball, half 2—extracting field ranking facts and growing output POGOs in this degree, I’ll speak about ■ ■ ■ studying from a database Downloading details over the net Parsing XML eventually, i must ship the ensuing info to the view layer in a sort it may well comprehend, as proven in determine 2. 7. layout enter information Get video game effects Convert effects to XML determine 2. 7 construction Groovy Baseball, half 3—drive procedure and generate XML in this level, I’ll disguise ■ ■ utilizing a groovlet producing XML I’ll commence the method with half 1, developing POGOs and saving info in a database. Groovy Baseball 2. three. 1 29 Database info and undeniable previous Groovy gadgets the sport effects on the net web page are established at the domestic stadiums of every online game.

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